WO1999036411A1 - Method for modifying melamine derivatives - Google Patents
Method for modifying melamine derivatives Download PDFInfo
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- WO1999036411A1 WO1999036411A1 PCT/JP1999/000123 JP9900123W WO9936411A1 WO 1999036411 A1 WO1999036411 A1 WO 1999036411A1 JP 9900123 W JP9900123 W JP 9900123W WO 9936411 A1 WO9936411 A1 WO 9936411A1
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- melamine derivative
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- melamine
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
- C07D251/70—Other substituted melamines
Definitions
- the present invention provides a method for producing a melamine or N-substituted melamine derivative, comprising reacting the melamine or N-substituted melamine derivative with an alcohol by heating in the presence of a metal catalyst and hydrogen.
- the present invention relates to an improvement in a method for modifying a melamine derivative in which a substituent is introduced on an N atom.
- the first invention of the present invention is to react a melamin or N-substituted melamin derivative with an alcohol by heating in the presence of a mixed catalyst of a hydrogenation catalyst and a dehydrogenation catalyst and hydrogen. It relates to a method for modifying a melamine derivative in which a substituent is introduced on the N atom of the melamine or N-substituted melamine derivative.
- the second invention of the present invention is characterized in that a metal is added and coexisted in a hydrogenation catalyst and hydrogen in the presence of a hydrogenation catalyst and a melanin or N-substituted melamine derivative and an alcohol are reacted by heating.
- the present invention relates to a method for modifying a melamine derivative in which a substituent is introduced on the N atom of the melamine or the N-substituted melamine derivative.
- the N-substituted melamine derivative obtained by the modification method of introducing a substituent to the amino group on the triazine ring carbon atom of the melamine of the present invention can be used for various kinds of agricultural chemicals, pharmaceuticals, dyes, paints and the like. It is a useful compound group widely used as a flame-retardant material as a fine chemical intermediate and as a resin component, particularly as an aminoblast-forming component.
- substituted triazines As for substituted triazines, various synthetic methods and derivatives have been developed due to interest in various resins and fine chemical materials.
- a synthesis method by amide exchange reaction between melamine and a corresponding amide derivative for example, a synthesis method by amide exchange reaction between melamine and a corresponding amide derivative [US Pat. No. 4,618,676 (1989)] And US Patent No. 4,668,785 (1989)], and the present inventors, using a 1,3,5-triazine derivative represented by melamine as a raw material, With alcohol Method for obtaining N-substituted triazine derivative [W095303287 (corresponding: JP-A-8-271128)], N-substituted triazine derivative using aldehyde and ketones A method for obtaining a lyazine derivative [W095307062 (corresponding to JP-A-8-193710)] and a method for obtaining an N-substituted triazine derivative using an olefin No.
- the above-mentioned production method by the present inventors is a method using an industrially inexpensive raw material
- a method using an alcohol is a method which can be recommended in view of the type, price and stability of the raw material.
- high temperatures and long times may be required, and the induction of unusual side reactions and low productivity may be problems.
- a melamine derivative and an industrially inexpensive alcohol were used as a hydrogenation catalyst and a dehydrogenation catalyst. Reacts in the presence of a mixed catalyst with hydrogen gas and hydrogen gas to introduce a substituent onto the amino group of the melamine derivative. It has practically no problematic reaction activity and productivity and is applicable to various alcohols.
- the present invention has been completed.
- the melamine derivative and an industrially inexpensive alcohol When reacting in the presence of a hydrogenation catalyst and hydrogen, a selected metal is added and coexisted and reacted to introduce a substituent on the amino group of the melamine derivative.
- the present invention which has no reaction activity and productivity and has high applicability to various alcohols, has been completed.
- the product is generally less than the raw material melamine.
- the solubility in water and / or various polar solvents is improved, and at the same time, the melting point is lowered, so that the compatibility with other organic compounds is also improved.
- These changes in physical properties also significantly increase the reactivity with other reactive compounds, so that it can be applied to resins and the like, for which it has been difficult to use melanin, and at the same time, its modification effect is It will be very large.
- An object of the present invention is to introduce a substituent into an amino group of a melamine derivative by using an alcohol, to provide a fine chemical intermediate for various agricultural chemicals, pharmaceuticals, dyes, paints, etc., and to use various resin materials,
- An object of the present invention is to provide a method for modifying a melamine derivative, which can easily produce an N-substituted melamine derivative, which is a useful compound group that can be widely used as a flame retardant material.
- the first invention of the present invention is to react a melamin or N-substituted melamin derivative with an alcohol by heating in the presence of a mixed catalyst of a hydrogenation catalyst and a dehydrogenation catalyst and hydrogen.
- a melamin or N-substituted melamine derivative is reacted with an alcohol in the presence of a hydrogenation catalyst and hydrogen by adding and coexisting a selected metal and heating.
- a method for modifying a melamine derivative by introducing a substituent into the melamine or N-substituted melamine derivative.
- the melamine or N-substituted melamine derivative as the raw material of the present invention is a melamine derivative represented by the general formula (I).
- R 1 R 2 , R 3 , R 4 , R 5 and R 6 represents a hydrogen atom, and the other groups each independently represent C 1.
- An alkyl group (said alkyl Le group, a halogen atom, an alkoxy group of C doctor 6, C 2 - 6 dialkylamino group,
- melamine derivatives as raw materials more preferably used are at least one of the groups R 1 , R 2 , R 3 , R 4 , RS and R 6 in the melamine derivative represented by the general formula (I). And at least one of them represents a hydrogen atom, and the other groups are each independently an alkyl group (the alkyl group is a hetero- or hetero-group selected from the group consisting of a halogen atom, d-alkoxy group and funyl group) Or a phenyl group (wherein the phenyl group is a hetero atom or a hetero atom selected from the group consisting of a halogen atom and an alkyl group of C and 6 ) May be optionally substituted with any of the above substituents.) Or is selected from the group consisting of a carbon atom, an oxygen atom, and a nitrogen atom by combining two groups on the same nitrogen atom Nitrogen atom by heterogeneous atom To form a cyclic structure of
- the melamine derivative represented by the general formula (I) at least one of the groups R 1 , R 2 , R 3 , R 4 , R 5 and R 6 represents a hydrogen atom, and the other groups Represents, independently of each other, a C alkyl group or a fuunyl group; or May have two or more groups on the same nitrogen atom bonded to each other to form a nitrogen-containing 3- to 6-membered cyclic structure with a heteroatom arbitrarily selected from the group consisting of a carbon atom and a nitrogen atom.
- Melamine derivatives are desirable because they are more suitable for use.
- melamin is the most suitable raw material for industrial reasons, such as price and supply.
- the alcohol that can be used in the present invention is an alcohol represented by the general formula ( ⁇ ).
- R (. Represents an alkyl group (the alkyl group, a halogen atom, a hydroxyl group, a carboxyl group, an alkoxy group of C i 6, hydroxycarboxylic alkoxy group C doctor 6,
- C Z -i An alkoxyalkoxy group, C-i hydroxyalkoxyalkoxy group, C-alkoxycarbonyl group, and C 2. May be arbitrarily substituted with one or more different or the same substituents selected from the group consisting of a dialkylamino group and a phenyl group. ). ].
- R represents an alkyl group of C no (the alkyl group is a hydroxyl group, an alkoxy group of de, a hydroxyalkoxy group of de, or a hydroxyalkoxy alkoxy group of C 2) . May be optionally substituted by one or more substituents of the same or different kind selected from the group consisting of a group, a C 2 -alkoxycarbonyl group and a phenyl group.) Is more preferably used. Many industrially distributed alcohols can be used as raw materials without any problems. Among them, typical examples that are industrially easily available include:
- the amount of the alcohol to be used can be in any range depending on the purpose, but is generally from 0.01 to 500 times the molar amount of the melamine derivative as a raw material, The range of 1 to 50 moles is effective from the viewpoint of reaction and operability, and when an excess amount of alcohol is used, it can also serve as a reaction solvent in the operation.
- the difference between the first invention and the second invention is that the catalyst system used for the reaction is different.
- a catalyst system composed of a hydrogenation catalyst and a dehydrogenation catalyst is used
- a catalyst system composed of a hydrogenation catalyst and a selected metal is used.
- the present invention relates to a method and a method using a metal catalyst in a conventional reaction. Separated.
- the catalyst system (hydrogenation catalyst-dehydrogenation catalyst) used in the first invention of the present invention is described below.
- the hydrogenation catalyst used in the reaction of the first invention contains one or more metals selected from iron, cobalt, nickel, copper, ruthenium, rhodium, palladium, iridium and platinum, A catalyst having a hydrogenation activity in a hydrogen gas atmosphere, among which a catalyst containing one or more metals selected from cobalt, nickel, ruthenium, rhodium, palladium and platinum is preferable.
- catalysts containing one or more metals selected from nickel, ruthenium, rhodium, and palladium are preferred in view of the reaction activity and industrial economics.
- the dehydrogenation catalyst used in the reaction of the first invention includes one or more metals selected from copper, zinc, iron, molybdenum, chromium, nickel, ruthenium and barium and oxides thereof.
- a catalyst containing oxidative dehydrogenation activity as a main component is preferred.
- one or more selected from copper, zinc, iron, chromium, nickel, and barium Catalysts containing two or more metals and their oxides are preferred.
- the hydrogenation catalyst can function as a dehydrogenation catalyst in the absence of hydrogen, and the dehydrogenation catalyst can also function as a hydrogenation catalyst in a hydrogen pressurized atmosphere.
- both catalysts are classified according to their general functions for convenience because they have extremely high reaction activity as compared with the case of using each alone due to the cooperative effect of both catalysts.
- this reaction is a mixed catalyst system, it is preferable to carry out the reaction in a heterogeneous system. Therefore, it is usually desirable to provide the above-mentioned metal catalyst as a solid catalyst. Preferred results can also be obtained using the above-described format.
- a supported metal catalyst such as nickel, ruthenium, rhodium, or palladium
- silica, alumina, aluminosilicate, silica-alumina, zeolite is used as a carrier.
- Regular or amorphous oxides such as silicon dioxide and clay minerals such as iso-earth and clay minerals, inorganic salts such as calcium carbonate, barium carbonate and barium sulfate, or activated carbon are generally and industrially desirable. .
- the dehydrogenation catalyst is preferably an oxide of a metal exhibiting good activity such as iron, copper, zinc, chromium, nickel and barium, and is used in combination with a carrier such as silica or alumina.
- metal oxides and many this used as a multi-component catalyst e.g., CuO - Cr 2 0 3, CuO - Cr 2 0 3 -BaO, CuO - Cr 2 0 3 - NiO - BaO, ZnO-Cr 2 0 3, ZnCr z 0 4, ZnFe 2 0 4, Ni / NiO- SiO 2 / Al 2 0 3, Ni / NiO- Zr0 2 / Si0 such as 2, a metal oxide It is preferable to use the compound as a mixed metal oxide or mixed metal oxide.
- trace metal components can be added in order to increase the activation, stabilization, deterioration and inactivation of the catalyst.
- the amount of each of the above-mentioned hydrogenation and dehydrogenation catalysts is usually in the range of 0.0001 to 200 mol%, preferably 0.00 mol%, based on the melamine derivative of the general formula (I).
- the molar ratio is in the range of from 0.1 to 100 mol%, and from this range, the working mixture ratio showing a suitable reaction activity is used.
- an additive to the above-mentioned catalyst, if necessary, to cause the reaction.
- the additives include monodentate and polydentate tertiary phosphines, phosphite esters, phosphonium salts, phosphoric acid esters, and the like.
- the amount of the additive to be used is generally in the range of 0.01 to 1000 mol%, preferably 1 to 500 mol%, based on the metal catalyst.
- the catalyst system (hydrogenation catalyst-metal) used in the second invention of the present invention will be described below.
- the hydrogenation catalyst used in the reaction of the second invention includes one or more metals selected from nickel, copper, ruthenium, rhodium, palladium, iridium, and platinum, and contains a hydrogen gas atmosphere.
- Catalysts are preferred, and it is practically desirable to use a supported catalyst in consideration of the form of use.
- silica, alumina, aluminosilicate, silica-alumina, zeolite, silicate, clay are used as carriers.
- Oxides such as mineral or amorphous silicon or aluminum such as minerals, inorganic salts such as calcium carbonate, barium carbonate and barium sulfate, or activated carbon are used. Particularly, catalysts containing activated carbon-supported palladium are used. Optimal.
- the amount of the hydrogenation catalyst to be used is usually in the range of 0.0001 to 20 mol%, preferably 0.00001 to 1 mol%, based on the melamine derivative of the general formula (I). It is in the range of 0 mol%, and is used in such a range as to determine a working mixture ratio showing a suitable reaction activity.
- an additive to the above catalyst, if necessary, to cause the reaction.
- the additives include monodentate and polydentate tertiary phosphines, phosphite esters, phosphonium salts, phosphoric acid esters, and the like.
- the amount of the additive to be used is generally in the range of 0.01 to 1000 mol%, preferably in the range of 1 to 500 mol%, based on the metal catalyst.
- a metal containing one or more metals selected from iron, cobalt and manganese as a main component is preferable, and in particular, considering productivity, economy, versatility, and the like. Then, one or two metals selected from iron and cobalt are preferred.
- any shape may be used as long as the shape is satisfied, and a plate having fine projections or spaces, a grain, or a fine powder having a dog surface area can be used without any problem.
- the reaction temperature for carrying out the reaction can be usually from 100 ° C. to 500 ° C., but the boiling point of the alcohol used is Considering the reactivity, reaction rate, productivity, practicability, etc., the temperature is preferably 150 to 300 ° C.
- the reaction time depends on the reactivity of the melamine derivative of the general formula (I), but the reaction conditions are selected so that it can be generally set to 0.1 to 100 hours, preferably 1 to 20 hours. Is desirable.
- the solvent is not particularly limited as long as it is inert to the reaction, and examples thereof include tetrahydrofuran, dimethyl ether, dimethyl oxymethane, dimethyl oxetane, jet oximethane, diethyl oxetane, and ethylene glycol.
- Ethylene glycol ether ethylene glycol dibutyl ether, ethylene glycol dibutyl ether, 1,4-dioxane, etc., benzene, toluene, xylene, mesitylene, cumene, chlor Benzene, o-dichlorobenzene, m-dichlorobenzene, ⁇ -dichlorobenzene, aromatic hydrocarbons such as tetrahydrodronaphthalene, pentane, hexane, cyclohexane, heptane, octane, decane, etc.
- Aliphatic hydrocarbons such as ril and propionitol, esters such as methyl acetate, ethyl acetate, butyl acetate, ethyl propionate, methyl benzoate and ethyl benzoate, N, N — dimethylformamide, N, N — Amides such as dimethyl acetate amide, N-methylpyrrolidone, 1,3-dimethylimidazolidinone, ureas such as N, N, N ', N'-tetramethyl urea, and water. Can be These can be used alone or in combination.
- an excess amount of the alcohol represented by the general formula (() may be used as the solvent.
- This reaction proceeds even under an inert gas atmosphere.
- the dehydrogenation reaction of the raw material alcohol and the like, and the hydrogenation reaction of the reductive alkylation, etc. are composed of reactions related to the transfer of hydrogen, it is preferable to carry out the reaction in a reducing atmosphere in the presence of hydrogen in the reaction system. Can give the result.
- a hydrogen partial pressure of 0.01 to 500 kg / cm 2 When hydrogen gas or a gas containing hydrogen is used, a hydrogen partial pressure of 0.01 to 500 kg / cm 2 , industrially a pressure of 0.1 SOO kg / cm 2 is practical. Above.
- a hydrogen-containing gas various gases can be used as the diluting gas as long as they are not directly involved in the reaction.For example, an inert gas such as nitrogen, argon, or helium is generally used. , Carbon monoxide, carbon dioxide, ammonia gas, air, etc. can also be used for the purpose of stabilizing products and catalysts.
- the total pressure is 0.1 to 500 kg cm 2 , preferably 0.5 to 300 kg cm 2 . Desirably, the pressure is in the range of k / cm 2 .
- the solvent is removed by distillation or the like, and unreacted melamine or the like is crystallized and removed at this stage, or is appropriately formed by a combination of an organic solvent and water.
- the product can be extracted and separated, and if necessary, the reaction product can be easily purified, purified and isolated by recrystallization, distillation, chromatographic separation, salt formation, etc. .
- the metal catalyst can be separated and recovered by filtration or the like, and can be reused as needed.
- the number of reactive amino groups or substituted amino groups on the melamine derivative, its reactivity, and a higher-order modified compound that is successively given as the reaction proceeds are generally used.
- the product obtained by the production method of the present invention as a mixture as it is, or, if necessary, to use the above-mentioned general post-treatment method. It is also possible to separate and divide it as higher purity or more pure one.
- N-substituted melamine derivative obtained by the method for modifying the amino group of melamine or N-substituted melamine derivative of the present invention as described above is a melamine derivative represented by the general formula ( ⁇ ).
- R 7 , R 8 , R 9 , R ′ °, R 11, and R 12 is a substituent R (R is 0. atom, hydroxyl group, a carboxyl group, an alkoxy group of C physician beta, hydroxycarboxylic alkoxy group C Bok beta, C 2-1. alkoxyalkoxy group, C z ⁇ . hydroxycarboxylic alkoxy alkoxide sheet group, an alkoxycarbonyl group having C 2-6, optionally may be substituted with one or more substituents of heterologous or homologous selected from the group consisting of dialkylamino groups and Hue sulfonyl group C 2 10.) the .
- representing) represents the other groups are each independently hydrogen atom, an alkyl group (the alkyl group of C no a halogen atom, C alkoxy groups, C 2 - 6 dialkylamino group, C 2 - 7 selected from the group consisting of an alkoxycarbonyl group and a phenyl group. .
- Moshiku is Fuweniru group (said Fuweniru group, a halogen atom, - 6 alkyl group, a haloalkyl group having alkoxy groups and C I in May be optionally substituted with one or more substituents of the same kind or different kinds selected from the group consisting of: or, or two groups on the same nitrogen atom are bonded to each other to form a carbon atom,
- the hetero atom which is arbitrarily selected from the group consisting of an oxygen atom and a nitrogen atom may form a nitrogen-containing 3- to 6-membered ring structure. ].
- a melamine derivative preferably produced is at least one of the groups R 7 , R 8 , R 9 , R 1 R 11 and R 12 in the melamine derivative represented by the general formula (m).
- R R, C alkyl group
- said alkyl group is halo gen atom, a hydroxyl group, a force Rupokishiru group, an alkoxy group of d, arsenide Doroki Shiarukokishi groups, C 2 -.,. alkoxyalkoxy !.
- a Huenil group (the Huunil group may be optionally substituted with one or more different or the same kind of substituents selected from the group consisting of a halogen atom and a C ⁇ e alkyl group).
- the melamine derivative which can be produced more industrially preferably is a melamine derivative represented by the general formula (II) among the groups R 7 , R 8 , R 9 , R 10 , R 11 and R 12 least one or more small substituent R (R is C WINCH 2.
- alkyl group include a halogen atom, a hydroxyl group, a carboxyl group, an alkoxy groups, C 1 -6 of hydroxycarboxylic alkoxy groups, C 2 - ...
- alkoxyalkoxy group hydroxycarboxylic alkoxyalkoxy group C 2 10, C 2 - 6 alkoxycarbonyl group, C 2 -., heterogeneous selected from the group consisting of di- ⁇ Rukiruamino group and Fuweniru group Or may be optionally substituted with one or more substituents of the same type.
- the other groups each independently represent a hydrogen atom, a C alkyl group or a phenyl group.
- the same nitrogen atom Is a melamine derivative which may combine with each other to form a nitrogen-containing 3- to 6-membered ring structure with different types of atoms arbitrarily selected from the group consisting of carbon atoms and nitrogen atoms. is there.
- the melamine derivative most suitable for the purpose of the present invention is a melamine derivative represented by the general formula (ffl), which can be directly produced from melamine in one step.
- R is an alkyl group of C ⁇ (the alkyl group is a hydroxyl group, 6 alkoxy group, hydroxycarboxylic alkoxy group having a C I 6, C 2 10 hydroxycarboxylic alkoxyalkoxy groups, C 2 - 6 1 or alkoxycarbonyl group and a phenylene Le selected from the group consisting of group heterologous or homologous
- the melamine derivative may be arbitrarily substituted with the above substituents, represents), represents) and the other group represents a hydrogen atom.
- the melamine is derived from the raw material.
- the conductor include melamine and various melamine derivatives
- examples of the alcohol include alcohols that can be obtained at low cost as various petrochemical products, which are used in the present invention. A typical product is obtained.
- the range of raw materials applicable to this reaction is not limited by the price and availability of these raw materials, but specific examples of the substituents of the raw materials and products in this reaction are shown below. The range of this reaction is further clarified.
- Examples of the C alkyl group which may have a substituent include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, an i-butyl group, a sec-butyl group, and a tert-alkyl group.
- the phenyl group which may be substituted includes a phenyl group, a 2-chlorophenyl group, a 4-chlorophenyl group, a 2-fluorophenyl group, a 4-fluorophenyl group, a 2,4-dichlorophenyl group, and a 2-fluoro-4-chlorophenyl group.
- 2,3,4,5,6-pentafluorophenyl group P-tolyl group, m-toluyl group, o-toluyl group, 3,5-dimethylphenyl group, 4-cyclohexylphenyl 2,4-, 6-trimethylphenyl, 2-methyl-4-isopropylphenyl, 3,5-dimethylethoxyphenyl, 4-cyclopentyloxyphenyl, 2-trifluoromethyl Examples thereof include a phenyl group, a 3-trifluoromethylphenyl group, and a 4-trifluoromethylphenyl group.
- Two groups on the same nitrogen atom combine to form a nitrogen-containing 3- to 6-membered ring structure of heteroatoms arbitrarily selected from the group consisting of carbon, oxygen and nitrogen.
- the group include an aziridino group, an azetidino group, a pyrrolidino group, a pyridino group, and a morpholino group.
- Two groups on the same nitrogen atom are bonded to form a nitrogen-containing 3- to 6-membered ring-shaped ring structure composed of heteroatoms arbitrarily selected from the group consisting of carbon atoms and nitrogen atoms.
- heteroatoms arbitrarily selected from the group consisting of carbon atoms and nitrogen atoms. Examples include aziridino, azetidino, pyrrolidino and piperidino groups.
- substituent introduced after the reaction examples include methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, sec-butyl, tert-butyl, n-amyl group, i-amyl group, neopentyl group, n-hexyl group, cyclohexyl group, cyclohexylmethyl group, heptyl group, octyl group, 2-ethylhexyl group, nonyl group, decyl group, hexadecyl Group, octadecyl group, trifluoromethyl group, 2-chloropropyl group, 3-chloropropyl group, 2-bromopropyl group, 2,2,2-trifluoroethyl group, hydroxyxetyl group, 2-hydroxypropyl group, 3-hydroxypropyl group, 3-hydroxy-2,2-dimethylpropyl group,
- the product was synthesized separately as a sample in advance and [Synthesis was carried out in the journal “Ob”, “America”, “Chemical” Society (J. Am. Chem. Soc.), 73, 2 This was carried out in accordance with page 984 (1951), Japanese Patent Application Laid-Open No. 3-215565, and US Patent No. 4,886,882. ], A calibration curve was prepared from the pure product and the internal standard substance, and the amount of each product in the reaction product was accurately determined by the internal standard quantification method by high performance liquid chromatography. .
- the crystals are collected by filtration from the resulting slurry solution, sufficiently washed with water, and dried to obtain an intermediate, 2-amino-4-n-butylbutylamine 6-chloro-1,3,5-triazine.
- I got The total amount of the obtained crystals was suspended in 100 mL of water, 8.1 g (0.11 mol) of normal butylamine was added, and the mixture was reacted at a reflux temperature for 2 hours. Thereafter, a solution of 4.0 g (0.1 mol) of sodium hydroxide in 20 mL of water was added dropwise over 1 hour, and the mixture was reacted under reflux for 2 hours.
- 2,4-diamino-6-chloro-1,3,5-triazine 14.5 g (0.1 mol), 2- (2-aminoethoxy) ethanol 11.6 g (0.11 mol) was added to water (60 mL), and the mixture was heated with stirring and heated to 100 ° C. in a suspended state. After the reaction was continued for 2 hours, a 20 mL aqueous solution of sodium hydroxide 4.Og (0.1 mol) was added dropwise over 1 hour while maintaining the reaction temperature, and further at the same temperature for 3 hours. The reaction continued. The resulting homogeneous reaction solution was gradually cooled and left at room temperature overnight.
- reaction conversion of the raw material melamin was 81.0%, and 2,4-diamino-6- (5-hydroxypentylamino) -1,3,5-triazine 37.6%, 2-amino-1,4,6-bis (5-hydroxypentylamino) 11, 3,5-triazine is 30.1%, 2,4,6-tris (5-hydroxypentylamino)-11,3,5-triazine is 9.0%. It was confirmed that each was produced in a yield.
- reaction conversion of the raw material melamine was 73.8%, and 2,4-diamino-6- (4- Hydroxybutylamino-1, 3,5-triazine is 35.2%, 2-amino-14,6_bis (4 -hydroxybutylamino)-1,3,5 -triazine 17.6%, 2,4,6-tris (4-hydroxybutylamino) -11,3,5-triazine is produced in 9.8% yield, respectively. It was confirmed.
- Stainless steel autoclave having an inner volume of 1 0 0 m L, melamine down 1 2 6 g (1 0 Mi Rimoru), 5% Pd- C catalyst 2 5 0 mg, CuO- Cr 2 0 3 -.
- MO- BaO catalyst After charging 250 mg of Nissan Gardler Catalyst Co., Ltd. and 250 mL of diethylene glycol, and thoroughly replacing the system with nitrogen gas, hydrogen gas was added at room temperature to 10 kgcm 2. Press-fit. Thereafter, the temperature was raised while stirring, and after reaching a temperature of 260 ° C., the reaction was further carried out at the same temperature for 2 hours. After cooling, the reaction solution was taken out, and quantitative analysis of the reaction product was performed under the above-mentioned analysis conditions.
- reaction conversion of the starting melamin was 89.3%, and 2,4 diamino-6- (4- 1-, 3-, 5--triazine 33.3%, 2-amino-1,4,6-bis (4-hydroxypropyltylamino) 1,1,3,5 36.4% of riadin and 2,4,6-tris (4-hydroxybutylamino) — 1,3,5-triazine in 9.5% yield It was confirmed.
- Stainless steel autoclave having an internal capacity of 1 0 0 m L, melamine 3. 78 g (3 0 Mi Rimoru), 5% Pd-C catalyst (50% water-containing product) 2 5 0 mg, Ni / NiO- Zr0 2 / Si0 2 catalysts (Nissan Gadora first catalyst Co. Ltd. G- 6 9 B- RS) 2 5 g of 0 mg and 1, 4 one-butanediol 3 0 m L, after the atmosphere in the reaction system was sufficiently replaced with nitrogen gas It was pressed to be 1 O k gZc m 2 hydrogen gases at room temperature.
- the conversion rate of the raw material melamine was 82.6%
- the product, 2,4-diamino-6-butylamino-1,1,3,5-triazine was 21.1%, 21.1%.
- —Amino-4,6-bis (butylamino) -1,3,5-triazine is 38.5% and 2,4,6-tris (butylamino) -11,3,5-triazine Azine is 16.1%
- 2,4-bis (Cilamino) 1-6-dibutylamino 1,3,5-triazine was obtained with a yield of 3.5%.
- a 70 ml stainless steel autocreep was charged with 1.26 g (0.01 mol) of melamine and 5% Pd-C catalyst (50% water-containing product). mg, 100 mg of reduced iron powder and 30 mL of cyclohexanol were charged, and the inside of the reactor was sufficiently purged with nitrogen. Subsequently, the gas was purged five times with 1 O kgZ cm 2 of hydrogen gas. Hydrogen was left in the reactor at 10 kg / cm 2 , the temperature was raised with stirring, the reaction was carried out at a reaction temperature of 260 ° C. for 2 hours, and then cooled, and the contents were quantitatively analyzed.
- the conversion rate of the raw material melamine was 64.6%, and the product was 2,4-diamino-6-cyclohexylamino-1,1,3,5-triazine with 31.4%, 2-amino-4,6-bis (cyclohexylamino) 1-1,3,5-triazine is 25.8%, 2,4,6-tris (cyclohexylamino) 1-1,3 And 5-triazine were obtained in a yield of 4.1%.
- the reaction conversion of the raw material melamine was 90.0%, and the 2,4-diamino-16- (5—Hydroxypentylamino) 1, 3,5—Triazine is 33.1%, 2—Amino4,6—bis (5—Hydroxypentylamino) 1 1,3,5-triazine in a yield of 37.6% and 2,46-tris (5-hydroxypentylamino) _1,3,5-triazine in a yield of 72%. It was confirmed that each was generated.
- reaction conversion of the raw material melamine was 84.5%, and 2,4 diamine 6 — (3 — Hydroxypropylalumino) 1, 3,5—triazine 33.3%, 2—amino-4-4,6-bis (3-hydroxypropylamine) 1,3,5—triazine 35.2% and 2,4,6-tris (3-hydroxypropylamino) -11,3,5-triazine were produced in a yield of 14.6%, respectively. confirmed.
- the reaction conversion of the raw material melamine was 666.0%, and the product was 2,4-diamino-6- (5-hydroxy-1,3-oxapentylamino) 1,3,5-triazine is 37.4%, 2-amino-14,6-bis (5-hydroxy-3-oxapentylamino) 1), 3,5-triazine is 14.5%, 2,4,6-tris (5-hydroxy-3-oxapentylamino) 1-1,3,5_triazine is It was confirmed that each was produced at a yield of 3.5%.
- the reaction conversion of the raw material melamine was 64.3%, and the product was 2,4-diammino 6 — (5-Hydroxy-1-3-oxoxapentylamino) 1,3,5-triazine is 25.8%, 2-amino-4,6-bis (5-hydroxy_3 —1,3,5— Triazine is 20.0%, 2,4,6—Tris (5—hydroxy-3-oxaxanthylamino) — 1,3,5 It was confirmed that 5-triazine was produced at a yield of 6.5%.
- reaction conversion of the starting melamine was 3.4%, and 2,4 diamino-6-butylamino-1,3,5-triazine was produced as a product with a yield of 3.0%. Also, trace amounts of 2-amino-4,6-bis (butylamino) -11,3,5_triazine were obtained.
- the reaction conversion of the starting melamin was 46.0%, and the 2,4-diamino 6- (5 —Hydroxypentylamino) -1,3,5— Triazine is 32.6%, 2-amino-4,6-bis (5-hydroxypentylamino) 1-1,3, 5-triazine is 8.2% and 2,4,6-tris (5-hydroxypentylamino) -11,3,5-triazine is 1.5% in each yield. It was confirmed that the activity was reduced compared to the reaction in the mixed catalyst system.
- reaction solution was taken out, and quantitative analysis of the reaction product was performed under the above analysis conditions.
- the reaction conversion of melamine as the raw material was 11%, and many by-products were formed as products.
- 2,4-diamino-6- (5-hydroxy-3-oxapentylamino) 1,1,3,5_ triazine only about 2% was produced, compared to the mixed catalyst system. However, a clear decrease in activity was confirmed.
- the melamine or the N-substituted melamine derivative of the general formula (I) and the alcohol of the general formula (II) are reacted under relatively mild reaction conditions and simple reaction operations, and only water is used as a secondary component.
- various N-substituted melamine derivatives which are a useful group of compounds widely used as paints, adhesives, resin materials, and flame-retardant materials, particularly N-substituted melamine derivatives having a hydroxyl group are preferable. It can be easily produced at a high yield.
- the reaction is carried out in the presence of hydrogen using a catalyst system comprising a hydrogenation catalyst and a dehydrogenation catalyst, or a catalyst system comprising a hydrogenation catalyst and a selected metal.
- a reaction having remarkably superior activity can be achieved, and as a result, the reaction conversion of the raw material melamine increases and the higher-order melamine is substituted.
- Melamine derivatives can be produced.
- the variously modified N-substituted melamine derivatives, which are the products obtained in the present invention, are generally obtained as a mixture, but these products can be purified or purified according to common organic compound separation methods. It can be separated in form and used for the various applications described above. Depending on the field of use (especially in the case of modifying additives for resins, etc.), the reaction mixture can be used without particular separation.
- N-substituted melamine derivatives that can be easily obtained by this reaction have been relatively difficult or expensive to synthesize in the past, and their physical properties include solubility in water and various organic solvents.
- Many compounds are interesting in terms of stability at high temperature, melting point, boiling point, basicity, etc., and their use is expected to spread more than before.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002319219A CA2319219A1 (en) | 1998-01-19 | 1999-01-18 | Method for modifying melamine derivatives |
| US09/600,122 US6307046B1 (en) | 1998-01-19 | 1999-01-18 | Method for modifying melamine derivatives |
| AT99900332T ATE267819T1 (de) | 1998-01-19 | 1999-01-18 | Verfahren zur modifizierung von melaminderivaten |
| DE69917607T DE69917607T2 (de) | 1998-01-19 | 1999-01-18 | Verfahren zur modifizierung von melaminderivaten |
| EP99900332A EP1057821B1 (en) | 1998-01-19 | 1999-01-18 | Method for modifying melamine derivatives |
| NO20003679A NO20003679L (no) | 1998-01-19 | 2000-07-18 | FremgangsmÕte for Õ modifisere melaminderivater |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10/7220 | 1998-01-19 | ||
| JP722098 | 1998-01-19 | ||
| JP10/8263 | 1998-01-20 | ||
| JP826398 | 1998-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999036411A1 true WO1999036411A1 (en) | 1999-07-22 |
Family
ID=26341487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1999/000123 Ceased WO1999036411A1 (en) | 1998-01-19 | 1999-01-18 | Method for modifying melamine derivatives |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6307046B1 (ja) |
| EP (1) | EP1057821B1 (ja) |
| AT (1) | ATE267819T1 (ja) |
| CA (1) | CA2319219A1 (ja) |
| DE (1) | DE69917607T2 (ja) |
| NO (1) | NO20003679L (ja) |
| WO (1) | WO1999036411A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259294A (zh) * | 2015-11-16 | 2016-01-20 | 济南泰星精细化工有限公司 | 一种检测三聚氰胺氰尿酸盐中三聚氰胺和氰尿酸残留量的方法 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008016964A1 (de) | 2008-03-31 | 2009-10-01 | Ami Agrolinz Melamine International Gmbh | Verfahren zur Herstellung einer Verbindung mit mindestens einer zumindest einfach substituierten Aminogruppe |
| DE102008016967A1 (de) * | 2008-03-31 | 2009-10-01 | Ami Agrolinz Melamine International Gmbh | Verfahren zur Herstellung einer Verbindung mit mindestens einer zumindest einfach substituierten Aminogruppe |
| EP2360149A1 (de) | 2009-12-30 | 2011-08-24 | Johannes Kepler Universität Linz | Verfahren zur Herstellung von Alkylmelaminen |
| CN102731424B (zh) * | 2012-06-27 | 2015-03-04 | 四川金象赛瑞化工股份有限公司 | 一种三聚氰胺衍生物的制备方法 |
| EP3263560A1 (en) | 2016-06-29 | 2018-01-03 | Borealis Agrolinz Melamine GmbH | Novel triazine-precondensate-aldehyde condensation products and method for obtaining the same |
| EP3263561A1 (en) | 2016-06-29 | 2018-01-03 | Borealis Agrolinz Melamine GmbH | Novel triazine precondensate and method for obtaining the same |
| EP3327009A1 (en) | 2016-11-23 | 2018-05-30 | Borealis Agrolinz Melamine GmbH | Method for alkylating an amino compound |
| CN110128362A (zh) * | 2019-05-24 | 2019-08-16 | 华北理工大学 | 一种三嗪系膨胀型阻燃成炭剂及其制备方法和阻燃复合材料 |
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| EP0406810A1 (en) * | 1989-07-03 | 1991-01-09 | Ministero Dell' Universita' E Della Ricerca Scientifica E Tecnologica | Self-extinguishing polymeric compositions |
| EP0437186A1 (de) * | 1990-01-09 | 1991-07-17 | Ciba-Geigy Ag | Melaminderivate als Stabilisatoren für chlorhaltige Polymerisate |
| WO1995030662A1 (en) * | 1994-05-10 | 1995-11-16 | Nissan Chemical Industries, Ltd. | Process for alkylating triazine derivative |
| JPH0827125A (ja) * | 1994-05-10 | 1996-01-30 | Nissan Chem Ind Ltd | トリアジン誘導体のアルキル化法 |
| WO1997024338A1 (fr) * | 1995-12-27 | 1997-07-10 | Nissan Chemical Industries, Ltd. | Methodes de modification de derives de 1,3,5-triazine |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3422218A1 (de) | 1984-06-15 | 1985-12-19 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von (2-hydroxyethyl)melaminen und ihre verwendung als modifizierungsmittel bei der herstellung von aminoplastharzen |
| DE3438387A1 (de) | 1984-10-19 | 1986-04-24 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von n,n',n"-tris(2-hydroxypropyl)-melamin |
| DE3531912A1 (de) | 1985-09-07 | 1987-03-19 | Basf Ag | Hydroxyoxaalkylmelamine, verfahren zu ihrer herstellung und deren verwendung |
| TW401406B (en) * | 1993-07-20 | 2000-08-11 | Nissan Chemiacl Ind Ltd | The alkylation method of the triazine derivitives |
| JP3796760B2 (ja) | 1993-07-20 | 2006-07-12 | 日産化学工業株式会社 | トリアジン誘導体のアルキル化方法 |
| JP3215564B2 (ja) | 1993-11-12 | 2001-10-09 | 関西ペイント株式会社 | 水性塗料組成物 |
| JP3787858B2 (ja) | 1994-05-10 | 2006-06-21 | 日産化学工業株式会社 | トリアジン誘導体のアルキル化方法 |
| JPH08272125A (ja) | 1995-03-29 | 1996-10-18 | Konica Corp | 電子写真感光体と該感光体を用いた電子写真装置及び装置ユニット |
| JPH10231291A (ja) | 1995-12-27 | 1998-09-02 | Nissan Chem Ind Ltd | 1,3,5−トリアジン誘導体の修飾方法 |
-
1999
- 1999-01-18 EP EP99900332A patent/EP1057821B1/en not_active Expired - Lifetime
- 1999-01-18 DE DE69917607T patent/DE69917607T2/de not_active Expired - Fee Related
- 1999-01-18 WO PCT/JP1999/000123 patent/WO1999036411A1/ja not_active Ceased
- 1999-01-18 CA CA002319219A patent/CA2319219A1/en not_active Abandoned
- 1999-01-18 AT AT99900332T patent/ATE267819T1/de not_active IP Right Cessation
- 1999-01-18 US US09/600,122 patent/US6307046B1/en not_active Expired - Fee Related
-
2000
- 2000-07-18 NO NO20003679A patent/NO20003679L/no not_active Application Discontinuation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0406810A1 (en) * | 1989-07-03 | 1991-01-09 | Ministero Dell' Universita' E Della Ricerca Scientifica E Tecnologica | Self-extinguishing polymeric compositions |
| EP0437186A1 (de) * | 1990-01-09 | 1991-07-17 | Ciba-Geigy Ag | Melaminderivate als Stabilisatoren für chlorhaltige Polymerisate |
| WO1995030662A1 (en) * | 1994-05-10 | 1995-11-16 | Nissan Chemical Industries, Ltd. | Process for alkylating triazine derivative |
| JPH0827125A (ja) * | 1994-05-10 | 1996-01-30 | Nissan Chem Ind Ltd | トリアジン誘導体のアルキル化法 |
| WO1997024338A1 (fr) * | 1995-12-27 | 1997-07-10 | Nissan Chemical Industries, Ltd. | Methodes de modification de derives de 1,3,5-triazine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259294A (zh) * | 2015-11-16 | 2016-01-20 | 济南泰星精细化工有限公司 | 一种检测三聚氰胺氰尿酸盐中三聚氰胺和氰尿酸残留量的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| NO20003679D0 (no) | 2000-07-18 |
| ATE267819T1 (de) | 2004-06-15 |
| EP1057821A1 (en) | 2000-12-06 |
| NO20003679L (no) | 2000-09-19 |
| DE69917607T2 (de) | 2005-06-02 |
| US6307046B1 (en) | 2001-10-23 |
| EP1057821A4 (en) | 2001-04-11 |
| CA2319219A1 (en) | 1999-07-22 |
| DE69917607D1 (de) | 2004-07-01 |
| EP1057821B1 (en) | 2004-05-26 |
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