WO1999011598A1 - Process for acyloxylating side chains of alkyl-substituted aromatic compounds and catalysts used therefor - Google Patents
Process for acyloxylating side chains of alkyl-substituted aromatic compounds and catalysts used therefor Download PDFInfo
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- WO1999011598A1 WO1999011598A1 PCT/JP1998/002746 JP9802746W WO9911598A1 WO 1999011598 A1 WO1999011598 A1 WO 1999011598A1 JP 9802746 W JP9802746 W JP 9802746W WO 9911598 A1 WO9911598 A1 WO 9911598A1
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- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/02—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen
- C07C69/12—Acetic acid esters
- C07C69/16—Acetic acid esters of dihydroxylic compounds
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/80—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with zinc, cadmium or mercury
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- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/08—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y
- B01J29/10—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y containing iron group metals, noble metals or copper
- B01J29/106—Y-type faujasite
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- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
- B01J29/42—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing iron group metals, noble metals or copper
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- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
- B01J29/7215—Zeolite Beta
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
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- C07—ORGANIC CHEMISTRY
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- C07C67/035—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with saturated hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
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- C07C67/39—Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester
Definitions
- the present invention relates to a method for side chain acyloxylation of an alkyl group-substituted aromatic compound and a reaction thereof, wherein the method comprises the following steps:
- the present invention relates to a method for producing cinnamic acids by reacting benzylidene diacetates in the presence of a catalyst to be used and a basic catalyst.
- Alkyl-substituted aromatic side-chain acyloxy compounds and side-chain disiloxy compounds are themselves useful as fragrances.
- Benzyl alcohols and benzaldehydes obtained by hydrolysis are useful compounds as intermediates for pesticides, pharmaceuticals, and fragrances, and as resin additives.
- Cinnamic acids are compounds useful as intermediates for pesticides, medicines and fragrances.
- a method for producing a side chain acyloxy compound or a side chain dioxyloxy compound from an alkyl group-substituted aromatic compound includes the following methods.
- Japanese Patent Publication No. 51-45572 discloses a cobalt compound in a liquid phase in the presence of acetic anhydride.
- Japanese Patent Application Laid-Open Nos. 56-106486 and 56-57723 discloses a method in the presence of acetic anhydride.
- a method using a cobalt compound and / or a manganese compound as a catalyst and a halogen compound as a co-catalyst in a liquid phase is disclosed.
- the formation rate of the side-chain diacyloxy compound is extremely low and the selectivity is low.
- a halogen compound is used as a co-catalyst to improve the generation rate of the side-chain dioxy compound.
- the generation rate is still insufficient, and the selection of the side-chain dioxy compound is not sufficient. Sex was also low.
- the ammonium ions in the ammonium bromide used as co-catalysts are oxidized during the reaction to produce 2 moles of water from 1 mole of the ammonium ions.
- the carboxylic anhydride present in the reaction system quickly reacts with the produced water to form carboxylic acid. That is, when ammonium ions were present in the reaction system, the carboxylic acid anhydride as the acetoxifying agent was largely decomposed. Also, when water of crystallization was contained, the carboxylic acid anhydride was often decomposed for the same reason.
- the methods (3) and (4) do not provide sufficient yields of cinnamic acids, and in order to improve the yield, an excess of acetic anhydride relative to the substrate is required to improve the yield. Or malonic acid was required.
- malonic acid was required.
- the starting materials, benzaldehydes, are relatively unstable, and are difficult to handle because they are gradually oxidized and converted to benzoic acids when left in the air.
- An object of the present invention is to provide a method for side chain oxidization of an alkyl group-substituted aromatic compound which has high reaction efficiency and high industrial applicability and high productivity.
- a solid catalyst in which at least one selected from cobalt, cerium and manganese is supported on a carrier or (2) a cobalt oxide, a cerium oxide and
- a catalyst containing at least one selected from manganese oxides is used, the alkyl-substituted aromatic compound and the carboxylic acid and / or carboxylic anhydride can be efficiently reacted in the presence of an oxygen-containing gas.
- the catalyst was easily separated from the reaction solution.
- the alkyl-substituted aromatic compound can be efficiently reacted with the carboxylic acid and / or carboxylic anhydride in the presence of an oxygen-containing gas.
- the present invention has been achieved.
- Solid catalyst with one supported on a carrier (2) a catalyst containing at least one selected from cobalt oxide, cerium oxide and manganese oxide, or (3) a cerium compound catalyst in the absence of cobalt and manganese compounds It is intended to provide a method for side-chain acyloxylation of an alkyl group-substituted aromatic compound, characterized by using a catalyst, and a catalyst used in the method. Further, the present invention includes, as a catalyst, a solid catalyst in which at least one selected from cobalt, cerium, and manganese is supported on a carrier, and at least one selected from cobalt oxide, cell oxide, and manganese oxide.
- halogen compound When a halogen compound is used as a catalyst of a cerium compound and a co-catalyst in the absence of a catalyst or a cobalt compound and a manganese compound, the halogen compound does not contain water of crystallization and ammonium ions, and Z or the halogen compound To provide a side chain acyloxylation of an alkyl group-substituted aromatic compound characterized by continuously or intermittently supplying the compound to the reaction system during the reaction, and a catalyst used in the method.
- the present invention also provides a method for producing cinnamic acids, which comprises reacting benzylidene diacetates by heating in the presence of a basic catalyst.
- the carrier supporting at least one selected from cobalt, cerium and manganese is not particularly limited, but an inorganic compound is preferably used in view of thermal stability and solvent resistance.
- the carrier include zeolite, alumina, silica alumina, silica, titania, activated clay, and activated carbon.
- zeolite, alumina, silica alumina, and activated carbon are particularly preferred.
- the structure of alumina used in the present invention is as follows: ⁇ , ⁇ , ⁇ , (5, ⁇ , V> X and
- aluminas other than the ⁇ type are preferably used.
- Good. Alumina is generally commercially available, and they can be used.
- the silica-alumina used in the present invention is amorphous, and the alumina content is not particularly limited. Silica alumina is also generally commercially available and may be used.
- the activated carbon used in the present invention is not particularly limited, and commercially available activated carbon may be used.
- the structure of the zeolite used in the present invention may be any structure, but is preferably an MFI type, a Bayesian type, a faujasite type or a mordenite type.
- a zeolite synthesized at the time of an experiment or a commercially available zeolite may be used. Methods for synthesizing MFI zeolite are disclosed, for example, in U.S. Pat. No. 3,702,886 and U.S. Pat. No. 4,511,447.
- a method for synthesizing a Beehive type zeolite is disclosed in, for example, US Pat. No. 3,380,695.
- a method for synthesizing mordenite-type zeolite is disclosed in, for example, Japanese Patent Publication No. 47-46667.
- a method for synthesizing a faujasite-type zeolite is disclosed in, for example, Japanese Patent Publication No. 38-58006.
- the method of introduction into at least one carrier selected from cobalt, cerium and manganese there is no particular limitation on the method of introduction into at least one carrier selected from cobalt, cerium and manganese.
- the introduction method include an ion exchange method, an impregnation method, and addition of at least one selected from cobalt, cerium, and manganese to a synthetic gel precursor of a carrier, followed by hydrothermal synthesis or calcination of the gold.
- a method of including a genus in a carrier structure is exemplified.
- the ion exchange method there is also a method of dispersing the carrier in a solution containing at least one selected from cobalt, cerium and manganese, and adjusting the pH by adding an alkaline solution, for example, aqueous ammonia. It is also preferably used. Further, by repeating this operation as necessary, at least one selected from cobalt, cerium and manganese can be adjusted to a desired content.
- At least one form selected from cobalt, cellium and manganese includes organic salts such as formate, acetate, propionate, butyrate, valerate, carburonate, and naphthenate, and chlorides.
- the content of at least one selected from cobalt, cerium and manganese in the carrier is preferably 0.1 to 30% by weight, more preferably 1 to 10% by weight, based on the weight of the carrier. % By weight.
- the zeolite when the carrier is zeolite, preferably further contains hydrogen ions.
- the method of introducing hydrogen ions into zeolite include a method of directly exchanging ions with an aqueous acid solution or a method of exchanging with ammonium ions and then firing. If the ion at the cation site is an organic nitrogen-containing cation, it is decomposed by firing and converted to a hydrogen ion.
- the cobalt Bok oxide referred to in the present invention refers to what the cobalt atom is bound to at least one oxygen atom, as an example, cobalt oxide (CO0), tricobalt tetraoxide (Co 3 0 4), and three Although oxidation Nikobaruto (Co 2 0 3) and the like, may be a mixture thereof.
- cerium oxide referred to herein is cerium atom is bound to at least one oxygen atom, as an example, trioxide, cerium (Ce 2 0 3), and dioxide Seri ⁇ beam (CeO 2) include However, a mixture of these may be used.
- manganese oxide referred to herein is manganese atom is bound to at least one oxygen atom, manganese oxide as an example (MnO), trimanganese tetraoxide (Mn 3 0 4), and trioxide manganese (Mn 2 0 3), manganese dioxide (Mn0 2), and manganese heptoxide (Mn 2 0 7) Although the like, or a mixture thereof.
- the raw material compounds for preparing the cobalt oxide, the cerium oxide and the manganese oxide used in the present invention are not particularly limited.
- Such raw material compounds include, for example, sulfate, nitrate, formate, acetate, propionate, phosphate, oxalate, carbonate, hydroxide, oxide, bromide, chloride, naphthenate, Examples include benzoate, stearate, and acetyl acetonate salts.
- the target oxide can be prepared by baking them at a temperature of 300 ° C. or higher, or by hydrolyzing them with alkaline water or the like and then baking them. Is also good.
- cobalt oxide, cerium oxide and One containing only one selected from manganese oxides may be used, or two or more may be used in combination.
- a catalyst preparation method when two or more are combined (1) a physical mixing preparation method in which each oxide is sufficiently pulverized while being pulverized finely,
- a chemical preparation method in which dissimilar metals are complexed at the atomic level is preferably used.
- a solid catalyst in which at least one selected from cobalt, cerium and manganese is supported on a carrier or a catalyst containing cobalt oxide, cerium oxide and Z or manganese oxide may be used as it is, It may be used as a molded article.
- the molding method is not particularly limited, and known methods such as an extrusion method and a compression method can be applied.
- the molding method may be an appropriate shape such as a sphere, a column, or a honeycomb. If necessary, an inorganic oxide such as silica, alumina, and magnesia or clay may be used as the binder if necessary.
- Reaction using the solid catalyst of the present invention in which at least one selected from cobalt, cerium and manganese is supported on a carrier or the catalyst containing at least one selected from cobalt oxide, cerium oxide and manganese oxide can be carried out by any method such as a fixed bed method, a fluidized bed method, and a suspension catalyst method.
- the amount of these catalysts varies depending on the reaction method and reaction conditions, but in a batch operation or a semi-batch operation, is preferably from 0.1 to 100% by weight, based on the total amount of the alkyl-substituted aromatic compound. is 1-5 0% by weight, and in a continuous operation or intermittent operation, as supply weight hourly alkyl-substituted aromatic compound per catalyst weight, 0. 1 to 3 0 h 1 ratio, preferably used at a ratio of 0. 5 ⁇ 5 h 1.
- cerium compound used in the present invention is not particularly limited.
- cerium compounds include sulfate, nitrate, formate, acetate, propionate, phosphate, oxalate, carbonate, hydroxide, oxide, bromide, chloride, naphthenate, and benzoate.
- the salt include a citrate, a stearate, and an acetyl acetonate salt, and a combination of an alkyl group-substituted aromatic compound as a reaction substrate and an acyloxylating agent. Is selected as appropriate. When a cerium compound soluble in the reaction system is used, the yield of the side chain disiloxy compound of the alkyl group-substituted aromatic compound is improved.
- Cerium compounds include cerium nitrate, cerium sulfate, cerium tetraammonium sulfate, cerium acetate, cerium hydroxide, cerium oxide, cerium oxalate, cerium carbonate, cerium chloride, cerium fluoride, cerium acetate toner, bromide Cerium and the like.
- the amount of the cerium compound to be used is preferably 0.000;! To 0.5 mole times, more preferably 0.001 to 0.1 mole times, relative to the alkyl group-substituted aromatic compound. You.
- alkyl group-substituted aromatic compound used in the present invention examples include an aromatic compound substituted with one alkyl group or an alkyl ring, an aryl group, an aryl group, a halogen group, a nitro group, a cyano group and the like.
- alkyl group-substituted aromatic compound examples include toluene, ethylbenzene, 0-xylene, m-xylene, P-xylene, getylbenzene, 0-chlorotoluene, m-chlorotoluene, and P-chlorotoluene.
- the carboxylic acid used in the present invention may be either an aromatic carboxylic acid or an aliphatic carboxylic acid, but is preferably an aliphatic carboxylic acid, and the carboxylic anhydride is an aromatic carboxylic anhydride or an aliphatic carboxylic acid. Any of carboxylic anhydrides However, it is preferably an aliphatic carboxylic anhydride.
- carboxylic acids include formic acid, acetic acid, acetic anhydride, chloroacetic acid, chloroacetic anhydride, dichloroacetic acid, dichloroacetic anhydride, trichloroacetic acid, trichloroacetic acid anhydride, propionic acid, and propionic anhydride.
- examples thereof include acid anhydride, succinic acid, succinic anhydride, fluoric acid, fluoric anhydride, benzoic acid, and benzoic anhydride.
- the amount of these carboxylic acids and / or carboxylic anhydrides (the total amount of the carboxylic acids) is 0.1 to 50 times, preferably 1 to 10 times, the molar amount of the starting alkyl-substituted aromatic compound. It is molar times. If the amount is too small, the effect of the present invention is reduced. If the amount is too large, recovery of unreacted carboxylic acid and Z or carboxylic anhydride becomes costly, which is industrially disadvantageous.
- a halogen compound is present in the reaction system as a co-catalyst component, and at least one of a chlorine compound and a bromine compound is preferable, but a bromine compound is more preferable. More preferably, they do not contain water of crystallization or ammonia.
- a halogenated compound not containing water of crystallization and ammonium ion when used, when an alkyl-substituted aromatic compound is reacted with a carboxylic acid anhydride in the presence of an oxygen-containing gas, the decomposition of the carboxylic acid anhydride as an acetoxifying agent is performed. Can be suppressed.
- a similar effect can be obtained by performing the dehydration treatment before use.
- chlorine compound examples include organic chloride compounds such as alkyl chlorides and organic acid chlorides, hydrochlorides of alkali metals and alkaline earth metals, and ammonium salts.
- chlorine compounds include chlorine, lithium chloride, sodium chloride, potassium chloride, cesium chloride, magnesium chloride, calcium chloride, strontium chloride, barium chloride, manganese chloride, cobalt chloride, zinc chloride, aluminum chloride, hydrogen chloride, and ammonium chloride.
- bromine compound include organic bromine compounds such as alkyl bromide and organic acid bromide, alkali metal, alkaline earth metal, transition metal bromide, and ammonium salt.
- bromine compounds include bromine, lithium bromide, sodium bromide, lithium bromide, cesium bromide, magnesium bromide, calcium bromide, strontium bromide, barium bromide, manganese bromide, and bromide.
- halogen compounds such as cobalt, zinc bromide, aluminum bromide, hydrogen bromide, ammonium bromide, benzyl bromide, benzal bromide, benzoyl bromide, dibromoethane, tetrabromoethane, and acetyl bromide
- the entire amount may be introduced into the reaction system before the start of the reaction, but if an appropriate amount is continuously or intermittently added during the reaction, the conversion rate of the alkyl-substituted aromatic compound is increased. Is more preferred.
- a solid halogen compound may be supplied continuously or intermittently, but this is dissolved in an appropriate solvent and this solution is supplied. If there is a vapor pressure such as urea or bromine, it can be supplied into the reaction system using a carrier gas. Further, a part of the halogen compound may be added to the reaction system in advance as in the conventional method before the start of the reaction.
- the amount of the halogen compound to be used is preferably 0.0001 to 0.5 mol times, more preferably 0.001 to 0.1 mol times, based on the alkyl-substituted aromatic compound as the raw material. It is.
- a zinc compound is further present in the reaction system as a promoter component.
- the zinc compound used in the present invention is not particularly limited. These zinc compounds include, for example, sulfate, nitrate, formate, acetate, propionate, phosphate, oxalate, carbonate, hydroxide, oxide, bromide, chloride, naphthenic acid Salts, benzoates, stearates, and acetylacetonato salts.
- the amount of the zinc compound used is preferably 0.0001 to 0.5 mole times, more preferably 0.01 to 0.1 mole times, relative to the raw material of the alkyl-substituted aromatic compound. It is twice.
- the oxygen-containing gas used in the present invention does not need to be pure oxygen, and oxygen diluted with an inert gas or the like, for example, air may be used.
- the theoretical amount of oxygen required is 0.5 mol per mol of the alkyl-substituted aromatic compound to be reacted.
- the stoichiometric amount of oxygen may be present in order to improve the reaction speed, or the pressure may be increased in order to increase the solubility of oxygen in the reaction solution.
- the reaction of the present invention is preferably performed in a liquid phase reaction.
- the reaction temperature is usually 20 to 500 ° C, more preferably 60 to 350 ° C.
- the reaction pressure is not particularly limited, but is set so as to keep the reaction system in a liquid phase. It goes without saying that these reaction conditions are appropriately selected depending on the combination of the alkyl-substituted aromatic compound to be reacted with carboxylic acid or carboxylic anhydride.
- the side-chain acyloxy compound and the side-chain disiloxy compound of the alkyl group-substituted aromatic compound formed from the reaction solution can be separated and purified by a usual distillation method, crystallization method or chromatographic method. .
- the side-chain acyloxy compound and the side-chain diacyloxy compound may be hydrolyzed and taken out as an aromatic alcohol or an aromatic aldehyde. When the unreacted raw material is recovered, it can be used again for the acyloxylation reaction.
- the side chain of an alkyl group-substituted aromatic compound can be acyloxylated with high yield, which is extremely advantageous as an industrial process for producing a side chain disiloxy compound of an alkyl group-substituted aromatic compound.
- the basic catalyst in the present invention may be either an organic base compound or an inorganic base compound.
- the basicity of a compound can be determined by immersing it in a pH test paper, measuring the pH of the solution with a pH meter, observing discoloration using an indicator, and measuring carbon dioxide adsorption. It is easily confirmed.
- Specific examples of the organic base compounds include pyridine, pyrrolidine, methylamine, dimethylamine, trimethylamine, ethylamine, getylamine, triethylamine, tetraethylammonium hydroxide, tetramethylammonium hydroxide, aniline, and toluidine.
- Organic amines organic amines.
- Inorganic base compounds are salts of strong bases and weak acids, for example, alkali metal acetates, alkali metal propionates And alkali metal carbonates, alkaline earth metal acetates, alkaline earth metal propionates, and alkaline earth metal carbonates.
- the amount of the basic catalyst used varies depending on the reaction substrate and reaction conditions, but is preferably 0.01 to 5 times, more preferably 0.2 to 1 mol, per benzylidene diacetate. Double the amount.
- the benzylidene acetate used in the present invention is not particularly limited.
- the general formula (1) the general formula (1)
- the alkoxy group, the alkyl group, and the amide group each preferably have 1 to 6 carbon atoms
- the acyloxy group, the aryl group, and the acyl group each preferably have 2 to 6 carbon atoms.
- the aryl group is preferably a group having 6 to 12 carbon atoms.
- the benzylidene diacetates are benzylidene diacetate, chlorobenzylidene diacetate, dichlorobenzylidene diacetate, nitrobenzylidene diacetate, methoxybenzylidene diacetate, hydroxybenzylidene diacetate, and acetate. Benzylidene acetate, phenoxybenzylidene acetate, and the like.
- the benzylidene diacetate used in the present invention may be a pure substance itself or may be used in a state containing it.
- a reaction solution obtained by acetoxylation of a methyl group-substituted aromatic compound in acetic acid and / or acetic anhydride to produce benzylidene diacetates may be used as a reaction raw material of the present invention.
- the methyl-substituted aromatic compound is subjected to acetoxylation in acetic anhydride and then reacted in the presence of a basic catalyst, the methyl-substituted aromatic compound used in the present invention is used.
- the material is not particularly limited, for example, the general formula (2)
- the alkoxy group, the alkyl group, and the amide group each preferably have 1 to 6 carbon atoms
- the acyloxy group, the aryl group, and the acyl group each preferably have 2 to 6 carbon atoms
- the methyl-substituted aromatic compound includes toluene, xylene, chlorotoluene, dichlorotoluene, nitrotoluene, methoxytoluene, phenoxytoluene, cresol, and methylbenzyl alcohol.
- the reaction of the present invention is carried out using only benzylidene diacetate and a basic catalyst, but acetic anhydride may be allowed to coexist in the reaction system.
- Acetic anhydride has the effect of accelerating the reaction and improves the yield of cinnamic acids.
- the amount of acetic anhydride to be coexisted varies depending on the reaction substrate and reaction conditions, but is preferably 0.1 to 10 times, more preferably 0.1 to 5 times, the molar amount of benzylidene diacetates. It is a molar amount. If the amount of acetic anhydride to coexist is too small, the effect is small, while if the amount is too large, the effect is recognized, but it is necessary to recover unreacted acetic anhydride, and the economic advantage is low. Become.
- an appropriate solvent can be used.
- suitable solvents include benzylidene diacetate used under the reaction conditions and solvents inert to organic salts such as acetic acid, hexane, cyclohexane, petroleum ether, methyl ether, tetrahydrofuran.
- the amount of the solvent used is usually preferably 1 to 10 to the total amount of benzylidene diacetate to be reacted. Use twice as much.
- the reaction temperature in the present invention is appropriately selected depending on the reaction substrate and reaction conditions, but is usually 100 to 300 ° C, preferably 120 to 250 ° C. At this time, the reaction time is usually 0.5 to 24 hours, preferably 1 to 12 hours for batch operation or semi-batch operation.
- the reaction pressure is not particularly limited, and whether the reaction is performed under normal pressure or under pressure is appropriately selected depending on the reaction substrate and the like.
- the resulting cinnamic acids are separated from the reaction system by extracting with an aqueous solution of citrate, and the acid is added to this extract to make it neutral or acidic, thereby isolating the cinnamic acids. can do. If unreacted raw materials are recovered, they can be used again for the reaction.
- cinnamic acids can be obtained in high yield by heating and reacting benzylidene diacetates in the presence of a basic catalyst. This is extremely advantageous as a typical production method.
- N a ion type N a ion type
- alumina activated alumina manufactured by Nikkasei Co., Ltd. was used.
- the silica alumina used was Nikki Chemical N633L (alumina content 13 wt%).
- the activated carbon used was a special grade of activated carbon powder manufactured by Wako Pure Chemical Industries.
- the cobalt compound used in the catalyst preparation was nacalai tesque's cobalt acetate (II) tetrahydrate
- the manganese compound was Katayama Chemical's special grade manganese acetate (II) tetrahydrate
- the palladium compound was nacalai tesque's special grade palladium chloride ( II)
- copper compound Wako Pure Chemical's special grade copper acetate (II)-hydrate and copper oxide (11)
- vanadium compound Katayama Chemical, vanadium pentoxide (V)
- ammonium salt Kanto Chemical first grade Ammonium chloride and halides were produced by Katayama Chemical's ammonium bromide and magnesium bromide hexahydrate (MgBr 2 6H2O), ALDRICH's magnesium bromide (MgBr 2 ), Wako Pure Chemical's zinc bromide (ZnBr 2 ) and bromine
- cerium compounds are nacalai tesque
- alkyl group-substituted aromatic compounds used in the examples were Wako Pure Chemical's special grade m-phenoxytoluene and Tokyo Chemical Industry's special grade m-chlorotoluene and m-cyanotoluene. First-grade acetic anhydride was used.
- the basic catalyst used in the examples is Katayama Chemical's primary sodium acetate and potassium acetate.
- As raw materials for synthesis of benzylidene diacetate m-chlorobenzaldehyde manufactured by Wako Pure Chemical Industries and primary acetic anhydride manufactured by Kanto Chemical Co. were used.
- Catalyst 1 20 g of Na ion type MF I type zeolite was dispersed in 40 ml of a 10% aqueous solution of ammonium chloride and stirred at 80 for 2 hours. It was then filtered and then washed twice with 25 Oml of distilled water. This ion exchange operation was repeated four times. Next, this was dispersed in a 25 Om1 aqueous solution containing 7.6 g of cobalt (II) acetate tetrahydrate, stirred at 80 ° C for 2 hours, and then filtered. Then, it was washed twice with 25 Oml of distilled water. This operation was repeated twice. After drying at 110 ° C overnight, it was calcined in an electric furnace at 500 ° C for 2 hours to prepare MF type I zeolite containing cobalt ions and hydrogen ions (Co + H- MFI).
- Catalyst 2 Disperse 20 g of hydrogen ion type zeolite having beta (3) type structure in 250 ml of an aqueous solution containing 10 g of cobalt acetate (II) tetrahydrate, and stirred at 80 ° C for 2 hours. Filtered. Then, it was washed twice with 250 ml of distilled water. This operation was repeated twice. After drying at 110 ° C overnight, it was calcined in an electric furnace at 500 ° (: 2 hours) to prepare a zeolite containing cobalt ions and hydrogen ions (Co + H- ) 3).
- II cobalt acetate
- Catalyst 3 The same operation as in Catalyst 1 was performed, except that 20 g of Y ion zeolite of Na ion type was used, and 18.6 g of cobalt (II) acetate tetrahydrate was used in the cobalt ion exchange. Thus, a Y-type zeolite containing cobalt ions and hydrogen ions was prepared (Co + HY).
- Catalyst Except for using 20 g of 4Na ion type MFI zeolite and using 7.4 g of manganese acetate (II) tetrahydrate instead of 7.6 g of cobalt (II) acetate tetrahydrate The same operation as in catalyst 1 was performed to prepare an MFI-type zeolite containing manganese ions and hydrogen ions (Mn + H-MFI).
- Catalyst 6 10 g of silica alumina 0.46 g of cobalt acetate (II) tetrahydrate, 0.514 g of cerous acetate monohydrate 0.54 g, 1.46 g of zinc acetate (II) dihydrate It was immersed in 20 ml of the dissolved aqueous solution and evaporated to dryness. Then baked 1 hour at 500 ° C (C o + Ce + Zn / Si0 2 - A1 2 0 3).
- Catalyst 7 The same operation as in Catalyst 6 was performed except that 10 g of alumina was used (Co + Ce + Zn / Al 203).
- Catalyst 8 0.96 g of cobalt acetate (II) tetrahydrate, 0.76 g of cerous acetate monohydrate, 2.23 g of zinc (II) acetate dihydrate dissolved in 20 ml of an aqueous solution 15 g of activated carbon was soaked and evaporated to dryness. Then, the mixture was calcined at 500 ° C for 1 hour.
- the reaction mixture was separated into a solid catalyst and a reaction solution, and the reaction solution was analyzed by high performance liquid chromatography.
- the conversion of m-phenoxytoluene, the selectivity of m-phenoxybenzyl acetate, and the selectivity of m-phenoxybenzylidene diacetate were calculated by the following equations.
- Tables 1 and 2 show the reaction conditions and results.
- Example 5 The same operation as in Example 5 was performed, except that the above catalyst 8 was used as the solid catalyst, and m-chlorotoluene 16.80 g was used instead of m-phenoxytoluene 23.4 g. Was.
- m-chloro mouth toluene conversion, m-chloro mouth benzyl acetate selectivity, and m-chloro mouth benzylidene diacetate selectivity were respectively calculated by the following formulas.
- Example 9 The same operation as in Example 9 was performed except that catalyst 9 was used as a solid catalyst. Table 3 shows the reaction results.
- Catalyst 11 1 2.88 g of cobalt (II) acetate tetrahydrate 2.28 g of cerous (III) acetate monohydrate and 6.69 g of zinc (II) acetate dihydrate at 80 ° C was dissolved in 3 Oml of water, then water was distilled off and evaporated to dryness. This is heated in air from room temperature to 350 ° C at 3 ° C / min, then to 500 ° C at 5 ° C / min, and held for 2 hours to remove cobalt, cerium and zinc. A composite oxide was prepared.
- Catalyst 12 Dissolve 2.88 g of cobalt (II) acetate tetrahydrate and 2.28 g of cerous (III) acetate monohydrate in 30 ml of water at 80, then distill off the water. Evaporated to dryness. This was heated in air from room temperature to 350 ° C at S min, then to 500 ° C at 5 ° C / min, and kept for 2 hours to prepare a composite oxide of cobalt and cerium. .
- Catalyst 13 2.88 g of cobalt (II) acetate, 1.66 g of manganese acetate (II) tetrahydrate and 6.69 g of zinc acetate (II) dihydrate in 30 ml of water at 80 ° C Then, water was distilled off and evaporated to dryness. This is heated in air from room temperature to 350 ° C at 3 ° C / min, then to 500 ° C at 5 ° C / min, and then held for 2 hours to form a composite of cobalt, manganese and zinc. An oxide was prepared.
- Catalyst 14 2.28 g of cerous (III) acetate monohydrate, 1.66 g of manganese (II) acetate tetrahydrate and 6.69 g of zinc (II) acetate dihydrate in 30 ml of water at 80 ° C Dissolved in
- Catalyst 15 Special grade cerium oxide (IV) manufactured by Wako Pure Chemical Industries was used as it was.
- Catalyst 17 Dissolve 6.69 g of zinc acetate (II) dihydrate in 30 ml of water at 80 ° C, add 0.91 g of vanadium pentoxide (V), stir, and evaporate water. And evaporated to dryness. This After raising the temperature from room temperature to 350 ° C at 3: / ⁇ in air, and then to 500 ° C at 5: / min, hold for 2 hours to prepare a composite oxide of vanadium and zinc. did.
- V vanadium pentoxide
- V Vanadium pentoxide
- Tables 4 and 5 show the reaction conditions and results.
- Example 10 The same operation as in Example 10 was performed except that the above catalysts 16 to 17 were used as the catalyst.
- Tables 4 and 5 show the reaction conditions and results.
- Example 11 Using the above catalyst 11, the same procedure as in Example 1 was carried out except that 23.4 g of m-phenoxytoluene was replaced with 16.08 g of m-chlorotoluene. In addition, m-chloro mouth toluene conversion, m-chloro mouth benzyl acetate selectivity, and The selectivity for m-clozen benzylidene acetate was calculated.
- Example 15 The same operation as in Example 15 was performed except that the above catalysts 16 and 18 were used as the catalyst. Table 6 shows the reaction results.
- Example 16 was carried out in the same manner as in Example 16 except that 0.5 Og of cobalt acetate was further added. Table 7 shows the reaction results.
- Example 16 was carried out in the same manner as in Example 16 except that the reaction substrate in Example 16 was changed from 23.4 g of m-phenoxytoluene to 14.9 g of m-chlorotoluene and air was blown at 15 Oml / min. Was.
- the m-chloro mouth toluene conversion and the m-chloro mouth benzylidene diacetate selectivity were calculated by the following equations.
- Example 17 was repeated except that 0.50 g of cobalt acetate was further added. Table 8 shows the reaction results.
- Example 17 was carried out in the same manner as in Example 17 except that 0.49 g of manganese acetate was used instead of 0.67 g of cerium acetate. Table 8 shows the reaction results.
- Table 9 shows the reaction results. Table 7.
- Example 19 was repeated except that 0.73 g of magnesium bromide was replaced by 0.90 g of zinc bromide. Table 10 shows the reaction results.
- Example 19 was repeated, except that 0.73 g of magnesium bromide was replaced by 3.10 g of bromine. Table 10 shows the reaction results.
- Example 22 Example 19 was repeated, except that 0.73 g of ammonium bromide was replaced by 0.78 g of ammonium bromide. The reaction results are shown in Table 10.
- Example 19 was repeated except that 0.73 g of magnesium bromide was replaced with 1.16 g of magnesium bromide hexahydrate. Table 10 shows the reaction results.
- the mixture was heated in a bath and kept at 90 ° C., and 14.9 g of m-cyanotoluene was added at a time from the dropping port to start the reaction, and the reaction was carried out for a predetermined time, and then analyzed by a high performance liquid chromatography method.
- the conversion of m-cyanotoluene, the selectivity of m-cyanobenzyl acetate, and the selectivity of m-cyanobenzylidene acetate were calculated by the following formulas:
- the decomposition of acetic anhydride was calculated as m-cyanobenzylidene diacetate. Acetic anhydride, which decomposes to acetic acid when it produces 1 mole It was expressed in terms of mole number (acetic anhydride decomposition rate).
- Example 24 was carried out in the same manner as in Example 24, except that 0.73 g of magnesium bromide was replaced with 1.16 g of magnesium bromide hexahydrate. The reaction results are shown in Table 11.
- a solid catalyst in which at least one selected from cobalt, cerium and manganese is supported on a carrier, a cobalt oxide, A catalyst containing at least one selected from cerium oxide and manganese oxide, or a halo as a cerium compound catalyst and a co-catalyst in the absence of a cobalt compound and a manganese compound
- a genogen compound if the octogen compound does not contain water of crystallization and ammonia, the acyloxylation reaction can proceed efficiently and the decomposition of the sulfonic acid anhydride can be suppressed. all right.
- Example 28 was carried out in the same manner as in Example 28 except that 0.73 g of magnesium bromide was replaced with 3.1 g of bromine. Table 12 shows the reaction results.
- a solid catalyst in which at least one selected from cobalt, cerium and manganese is supported on a carrier, cobalt oxide, cerium oxide Reacting the halogen compound with a cerium compound catalyst and a halogen compound in the absence of a cobalt compound and a manganese compound in the absence of a cobalt compound and a manganese compound. If the reaction is continuously or intermittently supplied to the reaction system, the acyloxylation reaction can proceed efficiently. I found out.
- Example 14 shows the reaction results.
- Example 35 The same operation as in Example 33 was performed, except that 24.26 g of m-chlorobenzylidene diacetate and 6.15 g of sodium acetate were further added with 2.55 g of acetic anhydride. Table 14 shows the reaction results.
- SVGWC V33W v was performed in the same manner as in Example 34, except that 5.3 g of sodium carbonate was used instead of 6 g of sodium acetate. Table 14 shows the reaction results.
- a halogen compound When a halogen compound is used as a co-catalyst, if a halogen compound that does not contain water of crystallization and ammonium ion is used, an alkyl-substituted aromatic compound and a carboxylic anhydride are efficiently reacted in the presence of an oxygen-containing gas. And suppresses decomposition of carboxylic anhydride Kill.
- a solid catalyst in which at least one selected from the group consisting of cobalt, cerium and manganese is supported on a carrier; a catalyst containing at least one selected from cobalt oxide, cerium oxide and manganese oxide;
- a halogen compound when used as a cerium compound catalyst and a co-catalyst in the absence of a cobalt compound and a manganese compound, when the halogen compound is supplied to the reaction system continuously or intermittently during the reaction, an alkyl group is produced.
- the substituted aromatic compound and the carboxylic acid and Z or carboxylic anhydride can be efficiently reacted in the presence of an oxygen-containing gas.
- the side chain acyloxy compound of the alkyl-substituted aromatic compound obtained by the present invention and The side-chain disiloxy compound is useful as a perfume itself, and benzyl alcohols and benzaldehydes obtained by hydrolyzing the compound are useful as intermediates and resin additives for agrochemicals, pharmaceuticals, and perfumes. is there.
- benzylidene diacetates can be used as a raw material to produce corresponding cinnamic acids in high yield.
- the obtained cinnamic acids are compounds useful as intermediates for pesticides, medicines and fragrances.
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Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002270939A CA2270939A1 (en) | 1997-08-29 | 1998-06-19 | Process for acyloxylating side chains of alkyl-substituted aromatic compounds and catalysts used therefor |
| US09/284,815 US6278019B1 (en) | 1997-08-29 | 1998-06-19 | Process for acyloxylating side chains of alkyl-substituted aromatic compounds and catalysts used therefor |
| EP98928590A EP0963974A1 (en) | 1997-08-29 | 1998-06-19 | Process for acyloxylating side chains of alkyl-substituted aromatic compounds and catalysts used therefor |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23420797 | 1997-08-29 | ||
| JP9/234207 | 1997-08-29 | ||
| JP34174097 | 1997-12-11 | ||
| JP9/341740 | 1997-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999011598A1 true WO1999011598A1 (en) | 1999-03-11 |
Family
ID=26531429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1998/002746 Ceased WO1999011598A1 (en) | 1997-08-29 | 1998-06-19 | Process for acyloxylating side chains of alkyl-substituted aromatic compounds and catalysts used therefor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6278019B1 (ja) |
| EP (1) | EP0963974A1 (ja) |
| KR (1) | KR20000068873A (ja) |
| CA (1) | CA2270939A1 (ja) |
| WO (1) | WO1999011598A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004039760A1 (ja) * | 2002-10-30 | 2004-05-13 | Central Glass Company, Limited | フルオロ(トリフルオロメチル)桂皮酸の製造方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10140786A1 (de) * | 2001-08-20 | 2003-03-06 | Haarmann & Reimer Gmbh | Depotpräparate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51146415A (en) * | 1975-06-11 | 1976-12-16 | Mitsui Toatsu Chem Inc | Preparation of an ammonium salt of unsaturated acids |
| JPS56104846A (en) * | 1980-01-28 | 1981-08-20 | Mitsui Petrochem Ind Ltd | Preparation of benzylidine compound |
| JPS56104845A (en) * | 1980-01-28 | 1981-08-20 | Mitsui Petrochem Ind Ltd | Preparation of benzylidene compound |
| JPS5764640A (en) * | 1980-10-07 | 1982-04-19 | Sanwa Kagaku Kogyo Kk | Production of cinnamic acid |
| JPS60193944A (ja) * | 1984-03-15 | 1985-10-02 | Mitsubishi Chem Ind Ltd | 桂皮酸の製造方法 |
| US5206423A (en) * | 1991-11-06 | 1993-04-27 | Philip Morris Incorporated | Acyloxylation of alkylaromatic compounds with palladium-tin catalysts |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3448021A (en) * | 1966-12-28 | 1969-06-03 | Mobil Oil Corp | Electrolytic process for selective acyloxylation |
-
1998
- 1998-06-19 EP EP98928590A patent/EP0963974A1/en not_active Withdrawn
- 1998-06-19 WO PCT/JP1998/002746 patent/WO1999011598A1/ja not_active Ceased
- 1998-06-19 CA CA002270939A patent/CA2270939A1/en not_active Abandoned
- 1998-06-19 US US09/284,815 patent/US6278019B1/en not_active Expired - Fee Related
- 1998-06-19 KR KR1019997003794A patent/KR20000068873A/ko not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51146415A (en) * | 1975-06-11 | 1976-12-16 | Mitsui Toatsu Chem Inc | Preparation of an ammonium salt of unsaturated acids |
| JPS56104846A (en) * | 1980-01-28 | 1981-08-20 | Mitsui Petrochem Ind Ltd | Preparation of benzylidine compound |
| JPS56104845A (en) * | 1980-01-28 | 1981-08-20 | Mitsui Petrochem Ind Ltd | Preparation of benzylidene compound |
| JPS5764640A (en) * | 1980-10-07 | 1982-04-19 | Sanwa Kagaku Kogyo Kk | Production of cinnamic acid |
| JPS60193944A (ja) * | 1984-03-15 | 1985-10-02 | Mitsubishi Chem Ind Ltd | 桂皮酸の製造方法 |
| US5206423A (en) * | 1991-11-06 | 1993-04-27 | Philip Morris Incorporated | Acyloxylation of alkylaromatic compounds with palladium-tin catalysts |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004039760A1 (ja) * | 2002-10-30 | 2004-05-13 | Central Glass Company, Limited | フルオロ(トリフルオロメチル)桂皮酸の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000068873A (ko) | 2000-11-25 |
| CA2270939A1 (en) | 1999-03-11 |
| EP0963974A1 (en) | 1999-12-15 |
| US6278019B1 (en) | 2001-08-21 |
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