WO2006048546A1 - Utilisation d'un acide carboxylique aromatique dans une reaction de catalyse asymetrique - Google Patents
Utilisation d'un acide carboxylique aromatique dans une reaction de catalyse asymetrique Download PDFInfo
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- WO2006048546A1 WO2006048546A1 PCT/FR2005/002717 FR2005002717W WO2006048546A1 WO 2006048546 A1 WO2006048546 A1 WO 2006048546A1 FR 2005002717 W FR2005002717 W FR 2005002717W WO 2006048546 A1 WO2006048546 A1 WO 2006048546A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B53/00—Asymmetric syntheses
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
- C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
- C07C45/72—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups
Definitions
- the present invention relates to the use of an aromatic carboxylic acid in an asymmetric catalysis reaction.
- the invention relates to the use of an aromatic carboxylic acid in an asymmetric catalytic reaction involving as catalysts, chiral compounds derived from a diamine or a amino alcohol, monosulfonylated and carbonylated, carriers of a pyrrolidinyl group.
- the invention more particularly relates to aldolization reactions or asymmetric ketolization.
- optically active compounds are a problem that arises in many technical fields such as, for example, pharmacy, agrochemicals, the food industry (food additives, flavorings) and also in the perfume industry.
- optically pure products are required in the synthesis of compounds for therapeutic purposes.
- active ingredients include a hydroxyl or amino group carried by a carbon atom in the ⁇ -position relative to a carbonyl group, having a well-defined stereochemistry.
- R 'and R represents, independently of one another, a hydrocarbon group having from 1 to 20 carbon atoms which may be a saturated or unsaturated, linear acyclic aliphatic group; or branched, a saturated, unsaturated or aromatic, monocyclic or polycyclic carbocyclic or heterocyclic group; a chain of the aforementioned groups; or alternatively, R 'and R "may be linked so as to constitute with the
- Ar 1 and Ar 2 represent , independently of one another, two aromatic, carbocyclic or heterocyclic rings, substituted or unsubstituted, condensed or not and bearing optionally one or more heteroatoms,
- R f represents a hydrocarbon group having from 1 to 20 carbon atoms, which may or may not comprise at least one halogen atom, preferably a fluorine atom,
- R 2 represents one or more substituents on the pyrrolidinyl group
- G represents a chiral group
- R y N represents an oxygen atom or a group R y N wherein R y represents a hydrocarbon group having 1 to 20 carbon atoms which may be a saturated or unsaturated, linear or branched acyclic aliphatic group; a saturated, unsaturated or aromatic, monocyclic or polycyclic carbocyclic group; a sequence of the aforementioned groups,
- n the number of substituents on the cycle
- m is an equal number ranging from 0 to 3, preferably equal to 0 or 1.
- Another object of the invention of the application FR No. 04 00551 or WO 2005/080299 resides in the use of the chiral compound as defined above in the field of asymmetric organic catalysis and more particularly aldolization or ketolization, asymmetric intermolecular or intramolecular.
- This reaction involves two functional groups carried by two different molecules or by the same molecule.
- One of the molecules has a carbonyl group and acts as electrophilic by its CO bond, the other nucleophilic by its enol form due to the presence of at least one hydrogen atom in the ⁇ position of the carbonyl group .
- a bond is created between the carbon atom of the carbonyl group and the carbon atom in the ⁇ position of the carbonyl group.
- a ⁇ -aldol is formed with control of the stereochemistry of the OH group formed by reaction of an aldehyde or a ketone, with another ⁇ enaldehyde aldehyde, in the presence of a chiral compound according to the invention.
- a ⁇ -ketol is formed with control of the stereochemistry of the OH group formed by reacting an aldehyde (or a ketone) with an enolatable ketone in the presence of a chiral compound according to the invention.
- " ⁇ " Patent application FR No. 04 00551 or WO 2005/080299 also contemplates the formation of a ⁇ -aminoketone with control of the stereochemistry of the amino group formed by reaction of an enolizable aldehyde or an enolizable ketone with an imine in the presence of a chiral compound according to the invention.
- the Applicant has found that it is possible to improve the yield and enantioselectivity of an asymmetric reaction, in particular of an asymmetric aldolization or ketolization reaction by combining the chiral compound derived from a monosulfonylated and carbonylated diamine or aminoalcohol carrying a pyrrolidinyl group with a strong aromatic carboxylic acid.
- aromatic carboxylic acid is meant a carbocyclic aromatic compound of which a hydrogen atom directly attached to the aromatic ring is replaced by a carboxylic group or the carboxylic group is carried by a side chain.
- aromatic the classical notion of aromaticity as defined in the literature, in particular by Jerry March, Advanced Organic Chemistry, 4th edition, John Wiley and Sons, 1992 , pp. 40 and following.
- strong aromatic carboxylic acid is meant a carbocyclic aromatic compound having a pk a less than pk a benzoic acid, namely a pk a of 4.2 measured in water at 25 ° C.
- the pk a advantageously varies between 2 and 4.
- the lower limit is not critical and can be exceeded.
- the aromatic carboxylic acid may be represented by the following formula:
- B represents the remainder of an aromatic carbocycle having from 6 to 14 carbon atoms
- S symbolizes a valency bond, an alkyl or alkenyl chain having from 1 to 3 carbon atoms,
- B is a benzene or naphthalenic ring.
- B is more preferably a benzene ring.
- S it is more particularly a valency bond, a methylene, ethylene, propylene or an ethynylene group.
- S is preferably a valid link.
- the aromatic carboxylic acid of formula (X) comprises an aromatic ring which may carry one or more substituents.
- the number of substituents present on the ring depends on the carbon condensation of the ring and the presence or absence of unsaturations on the ring.
- several generally, less than 4 substituents on an aromatic ring.
- q is preferably 1 or 2.
- R 9 The nature of the substituent or substituents symbolized by R 9 can be very varied. Advantageously, it is desirable for R 9 to represent at least one electron-withdrawing group.
- the groups R 12 which are identical or different, represent a hydrogen atom, a (C 1 -C 12 ) alkyl group, (C 2 -C 1 S) alkenyl, (C 3 -C 8 ) cycloalkyl, aryl (C 6 -C 18 ), (C 7 -C 12 ) aralkyl; .
- R 1 has the meaning given for R 1 and also represents an alkyl, cycloalkyl or aryl group substituted by one or more fluorine atoms;
- Z symbolizes a fluorine, chlorine or bromine atom, preferably a fluorine or chlorine atom;
- . p represents a number ranging from 1 to 10.
- the carboxylic aromatic acids used preferably correspond to the formula (X) in which R 9 represents a group chosen from groups of formula -CN, -SO 2 R 13, -COOR 1 2 , perfluoroalkyl, F, -NO 2 where R12 and R13 represent an alkyl group and R 13 also being an alkyl perhalogenated, preferably perfluorinated.
- aromatic carboxylic acids include the following acids: 2-nitrobenzoic acid
- 2-nitrobenzoic acid Of the above-mentioned acids, 2-nitrobenzoic acid is preferred.
- an aromatic carboxylic acid and a chiral catalyst as defined below are combined in an asymmetric catalysis reaction, preferably in an asymmetric aldolization or ketolization reaction, which reaction can be intermolecular or intramolecular.
- the process of the invention is applicable to any molecule comprising an aldehyde or ketone function on which another aldehyde, a ketone or an imine is reacted.
- the process of the invention relates to the following reaction schemes involving the following functional groups:
- the compounds (A) and (B) carbonyl may be represented by the formulas (VII) or (VIII):
- R 1 and R 2 identical or different, represent:
- a hydrocarbon group having 1 to 20 carbon atoms which may be a saturated or unsaturated, linear or branched acyclic aliphatic group; a saturated, unsaturated or aromatic, monocyclic or polycyclic carbocyclic or heterocyclic group; a linear or branched, saturated or unsaturated aliphatic group carrying a cyclic substituent,
- At least one carbon atom present in the group R 2 or R 3 in position ⁇ with respect to the carbonyl group carries at least one atom, hydrogen,
- R 3 has the meaning given for R 2 ,
- R 1 , R 2 and R 3 can be bonded together to form a cycle leading to a cyclic ketone.
- R 1 , R 2 and R 3 may have different meanings. Different examples are given below but they are in no way limiting.
- the carbonyl compound involved in the process of the invention more particularly corresponds to formula (VII) or (VIII) in which R 1 , R 2 and R 3 represent an acyclic aliphatic group, saturated or unsaturated, linear or branched.
- R 1, R 2 and R 3 represent a linear or branched acyclic aliphatic group preferably having from 1 to 12 carbon atoms, saturated or comprising one to more unsaturations on the chain, generally
- the hydrocarbon chain may be optionally interrupted by a heteroatom (for example, oxygen or sulfur) or by a functional group to the extent that it does not react and there may be mentioned in particular a group such as in particular -CO-.
- the hydrocarbon chain may optionally carry one or more substituents insofar as they do not react under the reaction conditions and may be mentioned in particular a nitrile group, a nitro group or a trifluoromethyl group or a (Ph) 2 group . PO- or a group (PhO) 2 -PO- or equivalent.
- acyclic aliphatic group saturated or unsaturated, linear or branched may optionally carry a cyclic substituent.
- ring is meant a carbocyclic or heterocyclic ring, saturated, unsaturated or aromatic.
- the acyclic aliphatic group may be linked to the ring by a valency bond or by one of the atoms or groups such as oxy, carbonyl, carboxy, sulphonyl, etc.
- cyclic substituents it is possible to envisage cycloaliphatic, aromatic or heterocyclic, in particular cycloaliphatic, substituents comprising 6 carbon atoms in the ring or benzenes, these cyclic substituents themselves being optionally carrying any substituent.
- one of the groups R 1 , R 2 and R 3 may also represent a cyclic hydrocarbon group, saturated or unsaturated, preferably having 5 or 6 carbon atoms in the cycle ; a heterocyclic group, saturated or unsaturated, in particular containing 5 or 6 atoms in the ring, including 1 or 2 heteroatoms such as nitrogen, sulfur and oxygen atoms; an aromatic hydrocarbon group, monocyclic or polycyclic condensed or not.
- carbonyl compounds used in the process of the invention mention may be made inter alia of:
- R 1 and R 2 may be linked to form a ring comprising at least one carbonyl group.
- the compound of formula (VII) can be:
- a polycyclic ketone compound comprising at least two carbocycles, saturated and / or unsaturated
- a polycyclic ketone compound comprising at least two saturated and / or unsaturated rings: one or more of the carbon atoms may be replaced by a heteroatom,
- a polycyclic ketone compound comprising at least two carbocycles, one of which is aromatic.
- the cyclic ketone of formula (VII) can therefore be a monocyclic or polycyclic compound.
- the number of carbon atoms in the ring can vary widely from 3 to 20 carbon atoms but is preferably 5 or 6 carbon atoms.
- the carbocycle may be saturated or comprising 1 or 2 unsaturations in the ring, preferably 1 to 2 double bonds which are most often in the ⁇ position of the carbonyl group.
- the saturated or unsaturated carbocycle may carry substituents.
- the number of substituents on each ring can vary widely from 1 to 5. It is generally 1 or 2.
- the carbonyl group is preferably carried by a saturated or unsaturated carbocycle having 5 or 6 carbon atoms.
- the compound may also be polycyclic, preferably bicyclic which means that at least two rings have two carbon atoms in common.
- the carbon condensation of each cycle is lower, generally from 3 to 8, but is preferably 5 or 6 carbon atoms.
- the polycyclic, preferably bicyclic, carbocyclic compound may comprise two saturated carbocycles, each preferably having from 4 to 8 carbon atoms. There may be the presence of a carbonyl group on one or "" the two cycles. It is also possible that there are two carbonyl groups on the same ring.
- the carbonyl group is preferably carried by one or two saturated carbocyclic rings having 5 or 6 carbon atoms. In these polycyclic compounds, one or more carbon atoms, preferably two, may be replaced by a heteroatom, preferably a nitrogen or oxygen atom.
- the ring (s) of this polycyclic compound may carry substituents.
- the number of substituents on each cycle is usually 1
- the bicyclic carbocyclic compound may comprise two carbocycles, each preferably having from 4 to 7 carbon atoms, one saturated, the other unsaturated, generally with a single double bond.
- the carbonyl group can intervene both in the saturated and unsaturated cycle or both.
- the carbonyl group is preferably carried by a saturated or unsaturated carbocycle having 5 or 6 carbon atoms.
- the ring (s) of this polycyclic compound may carry substituents.
- the number of substituents on each ring is generally from 1 to 3, preferably 1 or 2.
- the polycyclic, preferably bicyclic, carbocyclic compound may comprise two unsaturated carbocycles, each preferably having 5 or 6 carbon atoms. There may be a carbonyl group on one of the two rings.
- one or more carbon atoms may be replaced by a heteroatom, preferably a nitrogen or oxygen atom.
- the ring (s) of this polycyclic compound may carry substituents.
- the number of substituents on each ring is generally from 1 to 5, preferably 1 or 2.
- the polycyclic carbocyclic compound may comprise at least one aromatic carbocycle, preferably a benzene ring and a carbocycle having preferably from 4 to 7 carbon atoms. carbon and comprising one or two carbonyl groups.
- the polycyclic compound is preferably a bicyclic compound comprising a benzene ring and a 5- or 6-carbon bonded carbocycle comprising one or two carbonyl groups.
- the two rings of this bicyclic compound may carry substituents.
- the number of substituents on each cycle is usually 1 or 2.
- substituents there can be mentioned a linear or branched alkyl or alkoxy group having from 1 to 6 carbon atoms, preferably from 1 to 4 carbon atoms, a benzylidene group optionally carrying a halogen atom.
- cyclic ketones corresponding to formula (VII) preferably used in the process of the invention are chosen from: a saturated monocyclic ketone compound comprising a single carbonyl group, such as:
- an unsaturated monocyclic ketone compound comprising a single carbonyl group, such as:
- a saturated bicyclic ketone compound comprising one or two carbonyl groups, such as: camphor,
- a saturated / unsaturated bicyclic ketone compound comprising one or two carbonyl groups, such as: bicyclo [3.2.0] hept-2-en-6-one,
- unsaturated compound comprising a carbonyl group, such as:
- ketone ketone compound one of which is aromatic, comprising one or two carbonyl groups, such as:
- R 4 has the meaning given above for R 1
- R7 represents: a hydrogen atom
- R 8 , R 9 , R 10 , and R 11 which represent a hydrogen atom or a hydrocarbon group having from 1 to 30 carbon atoms.
- the invention also includes substrates which comprise several functional groups defined above and which may be derived from diketone compounds, the functional groups being in position ⁇ , ⁇ , ⁇ or ⁇ .
- a linear or branched alkyl group having 1 to 12 carbon atoms a cycloalkyl group having 5 to 12 carbon atoms, an aryl group having from 6 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms,
- an aryl group having 6 to 12 carbon atoms carrying substituents such as an alkyl or alkoxy group having 1 to 4 carbon atoms, amino, (C-
- a saturated or unsaturated heterocyclic group an alkanoyl group having 1 to 12 carbon atoms, an arylcarbonyl group having from 6 to 12 carbon atoms, an arylalkanoyl group having from 6 to 12 carbon atoms, - R 4 and R 8 , R 4 and R 10 , R 4 and R 11 may form a carbocyclic or heterocyclic ring, substituted or unsubstituted, monocyclic or polycyclic, having from 5 to 6 atoms in each cycle.
- the groups R 4 , R 8 to R 11 which may be identical or different, preferably represent: a linear or branched alkyl group having from 1 to 4 carbon atoms,
- a cyclopentyl or cyclohexyl group a phenyl group.
- a benzyl or phenylethyl group a phenyl group bearing substituents such as an alkyl or alkoxy group having from 1 to 4 carbon atoms, an amino group, (C 1 -
- the compounds corresponding to formula (IXa 1 ) are of the oxime type.
- acetophenone can be used:
- Compounds of formula (IXa2) are imines. As more specific examples, mention may be made of: as N-alkylketoimine
- the compounds of formula (IXa ⁇ ) are compounds of the hydrazone type, optionally N-acylated or N-benzoylated, and there may be mentioned more particularly:
- the invention also includes the semi-carbazones of formula (IXa 4 ). Cyclic ketoimines with endo or exocyclic bond may also be mentioned as starting substrates and more particularly:
- a preferred application of the process of the invention is to react an ⁇ , ⁇ -unsaturated aldehyde with a ketone or a ⁇ -ketoester such as, for example, an alkyl acetoacetate, thus making it possible to manufacture "statin" chains.
- R m and R n identical or different, represent a hydrogen atom or an alkyl group having 1 to 6 atoms or an aryl group having 6 to 12 carbon atoms, preferably an optionally substituted phenyl group, an aralkyl group; having 7 to 12 carbon atoms, preferably a benzyl group,
- R m has the meaning given for R m or R n .
- R q has the meaning given for R m or R n or a group -CO-ORt, Rt having the meaning given for R m or R n .
- X represents a halogen atom or an electron-withdrawing group, preferably a trichloromethyl, trifluoromethyl or a group
- halogen atom is meant a fluorine, chlorine, bromine or iodine atom, preferably a chlorine or bromine atom.
- X also represents an electro-attracting group by inductive and / or mesomeric effect.
- Preferred compounds (Ai) include those of formula (IX) wherein Rm represents a hydrogen atom; R n represents a phenyl group optionally substituted in particular by alkyl or alkoxy groups having
- X represents a bromine or chlorine atom.
- alkyl acetoacetates having 1 to 4 carbon atoms, preferably tert-butyl.
- the selected reagents are used in the presence of the chiral compound of formula (I) associated with a strong aromatic carboxylic acid.
- the molar ratio between the number of moles of the compound (A) and the number of moles of the compound (B) or (D) can vary widely between 1 and 100, and more preferably between 20 and 50.
- the amount of chiral compound corresponding to the formula (I) expressed with respect to the defective carbonyl reagent varies between 0.01 and 0.5, preferably between 0.2 and 0.4.
- the amount of aromatic carboxylic acid is advantageously chosen such that the molar ratio between the chiral compound of formula (I) and the aromatic carboxylic acid varies between 0.8 and 3.
- the ratio is advantageously chosen close to the stoichiometry c that is, around 2.
- the reaction is conducted in the absence of a solvent, one of the excess reagents being able to serve as a solvent. It is also possible to use an organic solvent. It is preferably an aprotic polar organic solvent. As preferred examples of solvents, mention may be made of aprotic, polar organic solvents and mention may be made more particularly of linear or cyclic carboxamides, such as ⁇ , ⁇ -dimethylacetamide (DMAC), ⁇ /, ⁇ -diethylacetamide, dimethylformamide (DMF), diethylformamide or 1-methyl-2-pyrrolidinone (NMP); dimethylsulfoxide (DMSO) ⁇ 'hexaméthyfphôsphôramide "(HMPA), hexamethylphosphotriamide (HMPT); tetramethylurea; nitro compounds such as nitromethane, nitroethane, 1-nitropropane, 2-nitropropane or mixtures thereof, nitrobenzene; aliphatic or aromatic
- a better conversion rate of the reactants is obtained by using acetonitrile, 1,4-dioxane and dichloromethane.
- a mixture of one of these aprotic solvents is advantageously chosen with an aprotic solvent which may be one of the reactants, namely the ketone.
- the reaction is carried out at a temperature of between -5 ° C. and 50 ° C., preferably between 15 ° C. and 25 ° C.
- reaction is conducted at atmospheric pressure but lower or higher pressures may also be suitable.
- all the reagents can be mixed and then bring the reaction mixture to the desired temperature.
- the chiral compound and the aromatic carboxylic acid are generally reacted at ambient temperature, most often between 15 ° C. and 25 ° C. Then, the reagent (s) carbonyl (s), aldehyde or ketone.
- reaction mixture After contacting the reagents, the reaction mixture is brought to the desired temperature.
- the latter is recovered according to standard separation techniques, for example by extraction with the aid of a suitable organic solvent, for example ethyl acetate.
- the ⁇ -aidol or the ⁇ -ketol obtained in turn reacts with the aldehyde or ketone which is enolisable, namely the carbonyl compound which carries a carbon atom. hydrogen on the carbon atom in the ⁇ position of the carbonyl group.
- the reaction can be carried out with or without separation of the intermediate product obtained.
- the chiral compounds involved in the process of the invention have the characteristic of having two centers of chirality.
- a first characteristic is the presence on the pyrrolidine ring of an asymmetric carbon atom located in the ⁇ position of the imino group.
- a second characteristic is the existence of a second chiral center either on the carbon atoms which carry the heteroatom O, N or N 1 N, or because of the presence of a chiral group G * present on an achiral cycle, for example benzene.
- G groups include, for example, menthyl, proline, methylbenzylamino, bomyl, isobomyl.
- the pyrrolidine ring may carry one or more substituents R 2 insofar as they do not interfere with the process of the invention.
- the groups R 2 may be identical or different.
- linear or branched alkyl groups having from 1 to 6 carbon atoms and preferably from 1 to 4 carbon atoms
- linear or branched mono, poly or perhalogenated alkyl groups preferably having from 1 to 6 carbon atoms and from 1 to 13 halogen atoms and even more preferably from 1 to 4 carbon atoms and from 1 to 9 carbon atoms; halogen atoms,
- R b represents a linear or branched alkyl group having from 1 to 6 carbon atoms and even more preferentially from 1 to 4 carbon atoms or the phenyl group ,
- R 0 , R d which may be identical or different, represent a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms,
- halogen atom preferably a fluorine atom.
- the invention more particularly targets the following:
- a linear or branched alkyl group preferably having from 1 to 6 carbon atoms and preferably from 1 to 4 carbon atoms,
- R b represents a linear or branched alkyl group having from 1 to 6 carbon atoms
- halogen atom preferably a fluorine atom.
- R f preferably represents a hydrocarbon group having 1 to 20 carbon atoms and more particularly:
- Ci-Ci 0 preferably Ci-C 4 , alkyl group, and more preferentially a methyl or ethyl group,
- a C 1 to C 10 preferably C 1 to C 4 , alkyl group, mono-, poly- or perhalogen having 1 to 21 halogen atoms, preferably a CF 3 group,
- cycloalkyl group having 3 to 8 carbon atoms, preferably cyclohexyl
- R f represents a CF 3 , C 4 F 9 group or a phenyl group substituted with one or more halogen atoms, preferably fluorine, or with one or more C 1 -C 2 alkyl groups, mono-, poly - or perfluorinated.
- Preferred sulfonyl groups -SO 2 -R f are:
- nosyles p-nitrobenzenesulfonyl
- Rf is more preferably a trifluoromethyl group.
- R is carried by the nitrogen atom, its nature is not critical.
- R y can have the following meanings:
- a cycloalkyl group preferably C 3 to C 12 ,
- an aryl or arylalkyl group preferably of Ce to C 12
- the cyclic groups may optionally carry one or more substituents and, by way of example, reference may be made to the list given for R 2 . However, it should be noted that there is no interest in the R group will be difficult.
- Ry is more particularly an alkyl group having 1 to 4 carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl.
- ⁇ ⁇ r ⁇ nvention "déc ⁇ te ⁇ in FR No. 04 / 00,551 or
- the preferred compounds of general formula (I) have the general formula (Ib) in which A represents a group of formula (F 2 ): in which :
- R f , R y, R 2 , (x), (y) are as defined above and An and Ar 2 together represent an aromatic group which may be a carbocycle having 6 to 12 carbon atoms or a heterocycle having 5 to 12 carbon atoms; at 12 atoms,
- aromatic means the conventional notion of aromaticity as defined in the literature, including J. March “Advanced Organic Chemistry", 4 th ed., John Wiley & Sons , 1992, pp 40 et seq.
- the aromatic derivative may be monocyclic or polycyclic.
- a monocyclic derivative in the case of a monocyclic derivative, it may comprise at its ring level one or more heteroatoms chosen from nitrogen, phosphorus, sulfur and oxygen atoms. According to a preferred mode, these are N-protected nitrogen atoms.
- pyridine derivatives pyrimidine, pyridazine and pyrazine.
- the carbon atoms of the aromatic derivative can also be substituted.
- Two vicinal substituents present on the aromatic ring may also form together with the carbon atoms which carry them a hydrocarbon ring, preferably aromatic, and optionally comprising at least one heteroatom.
- the aromatic derivative is then a polycyclic derivative.
- Ar 1 and Ar 2 together are a diphenyl-2,2'-diyl group
- the two phenyl rings are substituted so as to block the configuration of the corresponding structure with substituents such as an alkyl, alkoxy or alkylthio -C 6, preferably C l -C 4: said groups are preferably in position 3 and 3 '.
- R - R 'and R represent, independently of each other, a saturated, unsaturated or aromatic, monocyclic or polycyclic carbocyclic or heterocyclic group,
- R - or R 'and R may be bonded so as to constitute with the carbon atoms which carry them a carbocyclic group or LHCyclic group having from 4 to 20 atoms, saturated, unsaturated, monocyclic or polycyclic,
- R 'and R " which may be identical or different, may have various meanings: various examples are presented hereinafter, but they are in no way limiting.
- R 'and R " may independently of each other represent an acyclic aliphatic group, saturated or unsaturated, linear or branched. More precisely, R 'and R "preferably represent a linear or branched saturated acyclic aliphatic group preferably having from 1 to 12 carbon atoms, and even more preferably from 1 to 4 carbon atoms. 04/00551 or WO 2005/080299 does not exclude the presence of unsaturation on the hydrocarbon chain such as one or more double bonds which can be conjugated or not.
- the hydrocarbon chain may be optionally interrupted by a heteroatom (for example, oxygen or sulfur) or by a functional group to the extent that it does not react and there may be mentioned in particular a group such as in particular -CO-.
- the hydrocarbon chain may optionally carry one or more substituents (for example, halogen, ester) insofar as they do not interfere.
- substituents for example, halogen, ester
- the acyclic aliphatic group, saturated or unsaturated, linear or branched may optionally carry a cyclic substituent.
- ring is meant a carbocyclic or heterocyclic ring, saturated, unsaturated or aromatic.
- the acyclic aliphatic group may be linked to the ring by a valency bond, a heteroatom or a functional group such as oxy, carbonyl, carboxyl, sulfonyl, etc.
- cyclic substituents it is possible to envisage cycloaliphatic, aromatic or heterocyclic, in particular cycloaliphatic, substituents comprising 6 ring carbon atoms or benzenes, these cyclic substituents being themselves optionally carrying any substituent insofar as they do not do not interfere with the reactions involved in the process of the invention.
- alkyl or alkoxy groups having 1 to 4 carbon atoms may be mentioned.
- cycloalkylalkyl groups for example cyclohexylalkyl or arylkyl groups having 7 to 12 carbon atoms, in particular benzyl or phenylethyl, are more particularly targeted.
- the groups R 'and R may also represent, independently of each other a saturated carbocyclic group or contains 1 or 2 unsaturations in the ring, generally having 3 to 8" carbon atoms preferably 6 carbon atoms in the ring; said cycle being substitutable.
- Preferred examples of such groups are cyclohexyl groups optionally substituted with linear or branched alkyl groups having 1 to 4 carbon atoms.
- n ' represents a number from 0 to 5
- Q represents a group chosen from:
- a linear or branched alkyl group having from 1 to 6 carbon atoms a linear or branched alkoxy group having from 1 to 6 carbon atoms,
- a halogen atom a group CF 3 .
- R 'and R may also independently of one another represent a polycyclic aromatic hydrocarbon group with rings capable of forming between them ortho-condensed, ortho- and peri-condensed systems, more particularly a naphthyl group; can be substituted.
- R 'and R may also independently of one another represent a saturated, unsaturated or aromatic heterocyclic group, in particular having 5 or 6 atoms in the ring, one or two of which are heteroatoms such as nitrogen atoms (unsubstituted by a hydrogen atom), sulfur and oxygen, the carbon atoms of this heterocycle may also be substituted.
- R 'and R may also represent a polycyclic heterocyclic group defined as either a group consisting of at least two aromatic or non-aromatic heterocycles containing at least one heteroatom in each ring and forming between them ortho- or ortho- and peri-systems -condensates, or is a group consisting of at least one aromatic or non-aromatic hydrocarbon ring and at least one aromatic or non-aromatic heterocycle forming ortho- or ortho- and peri-condensed systems therein, the carbon atoms of said rings possibly being substituted .
- heterocyclic groups R 'and R " furyl, thienyl, isoxazolyl, furazannyl, isothiazolyl, pyridyl, pyridazinyl, pyrimidinyl, pyranyl and quinolyl, naphthyridinyl and benzopyranyl groups may be mentioned, for example: benzofuranyl
- the number of substituents present in each ring depends on the carbon condensation of the ring and the presence or absence of unsaturation on the ring The maximum number of substituents which can be carried on a ring is easily determined by the skilled person.
- R 1 and R may also be linked to represent carbocyclic or heterocyclic, mono- or poly-cyclic, saturated, unsaturated or aromatic, preferably bicyclic, groups which means that at least two rings have two carbon atoms in common.
- the number of carbon atoms in each ring preferably varies between 3 and 6.
- the two carbons of the general formula (I) involved respectively at the level of the bonds symbolized by (x) and (y) may constitute one or two centers of chirality, preferably two centers of chirality.
- the preferred reagents according to the invention correspond to the following formula (Ic): " in said formula,
- R f represents an alkyl group having from 1 to 10 carbon atoms, a phenyl group, a phenyl group substituted by an alkyl group having from 1 to 10 carbon atoms, from 1 to 5 fluorine atoms or a trifluoromethyl group,
- R 2 represents an alkyl group having from 1 to 10 carbon atoms
- R 3 represents a hydrogen atom or an alkyl or alkoxy group having 1 to 10 carbon atoms, a trifluoromethyl group, a nitro group,
- Ry represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms.
- R f represents an alkyl group having 1 to 10 carbon atoms, a phenyl group, a phenyl group substituted with an alkyl group having 1 to 10 carbon atoms, 1 to 5 fluorine atoms or a trifluoromethyl group;
- R 2 represents an alkyl group having from 1 to 10 carbon atoms
- R a represents a hydrogen atom or an alkyl or alkoxy group having 1 to 10 carbon atoms, a trifluoromethyl group, a nitro group
- - R y represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- Representative examples of illustrative compounds of the invention include: - (2R) -pyrrolidine-2-carboxylic acid, (1R, 2R) - (1,2-diphenyl-2-trifluoromethanesulfonylaminoethyl) amide (2S) -pyrrolidine-2-carboxylic acid, (1R, 2R] -1,2-diphenyl-2-trifluoromethanesulfonylaminoethyl) amide,
- (2S) -Pyrrolidine-2-carboxylic acid (1S, 2S-1H, 2-diphenyl-2-trifluoromethanesulfonylaminoethyl) amide, - (2f) -pyrrolidine-2-carboxylic acid, (1R, 2S) 1- (1,2-diphenyl-2-trifluoromethanesulfonylaminoethyl) amide, (2R) -pyrrolidine-2-carboxylic acid, (1S, 2R] -1,2-diphenyl-2-trifluoromethanesulfonylaminoethyl) amide, (2S) -Pyrrolidine-2-carboxylic acid, (1R, 2S) - ("1,2-diphenyl-2-trifluoromethanesulfonylaminoethyl) amide,
- the chiral compounds of formula (I), preferably (la) to (Id), can be obtained by reacting: the amino acid in protected form which is L- or D-proline or derivative which is can represent by the formu
- - P represents a protective group
- - R e represents a hydrogen atom or an alkyl group preferably having from 1 to 4 carbon atoms
- WH is advantageously an OH or NH 2 group .
- the invention described in FR No. 04/00551 or WO 2005/080299 contemplates the use of praline in the form of an ester, for example an alkyl ester having from 1 to 4 carbon atoms, but from an economic point of view, the acid form is preferred. It is possible that the group R e is a hydrocarbon group of any other nature and the invention does not exclude it. However, from an economic point of view, this is of little interest.
- the protective groups commonly used for its purposes are used, and may be mentioned in particular acyl groups (acetyl, benzoyl), BOC (butyloxycarbonyl), Cbz (carbobenzoxy), Fmoc (9-fluorenylmethoxycarbonyl) or MSOC (methanesulfenyl) -2 ethoxycarbonyl).
- acyl groups acetyl, benzoyl
- BOC butyloxycarbonyl
- Cbz carbobenzoxy
- reaction is carried out in the presence of conventional coupling agents whose selection is within the competence of the skilled person.
- carbodiimides such as, for example, N, N'-dicyclohexylcarbodiimide,
- cyanamides for example N, N-dibenzylcyanamide, keteneimines,
- isoxazolium salts such as, for example, N-ethyl-5-phenylisoxazolium-3-sulphonate,
- nitrogen-containing heterocycles such as for example the imidazolides, pyrazolides, and 1, 2,4-triazoIides and more particularly N 1 N'-carbonyldiimidazole and N, N'-carbonyl-di-1, 2,4-triazole ,
- the reagents such as ethyl or isobutyl chloroformate, which form an anhydrous mixture with the carboxyl function of the amino acid,
- nitrogenous heterocycles having a hydroxyl group on the nitrogen ring such as, for example, N-hydroxyphthalimide, N-hydroxysuccinimide and 1-hydroxybenzotriazole.
- the reagents such as ethyl chloroformate or isobutyl are preferred.
- the coupling reaction is generally carried out by contacting the amino acid and the diamine or the amino alcohol in the presence of a coupling agent in an organic solvent.
- a coupling agent in an organic solvent.
- solvents mention may in particular be made of methylene chloride and tetrahydrofuran.
- a hydrogenation is carried out in the presence of a palladium salt, preferably palladium (II) hydroxide.
- the diamino compound or sulfonylated aminoalcohol of formula (IV) can be obtained by reacting a compound bringing the electro-attractor group
- W, A, G and m have the meaning given above.
- the compound providing the sulphonyl group can be represented by the formula (VI):
- R f has the meaning given above
- Z represents: a halogen atom, preferably a chlorine or bromine atom,
- the preferred compounds have the formula (VI) wherein Z represents a chlorine or bromine atom.
- Z represents a chlorine or bromine atom.
- a compound of formula (IV) is obtained.
- compounds of formula (IV) there may be mentioned in particular:
- the reaction between the diamine compound of formula (V) and the compound of formula (VI) takes place optionally in the presence of a base.
- a base which can be a mineral or organic base whose role is to trap the acid formed during the reaction.
- Any type of base can be used.
- a base is used in which the pKa of the conjugated acid is greater than or equal to the pKa of the product obtained (IV).
- PKa is defined as the ionic dissociation constant of the acid / base pair, when water is used as the solvent.
- Strong bases such as alkali metal hydroxides, preferably sodium or potassium hydroxide, or alkali metal salts, especially carbonates, bicarbonates, phosphates, hydrogen phosphates, sulphates, acetates and trifluoroacetates of metals, may be used.
- alkali The concentration of the basic starting solution is not critical.
- the alkali metal hydroxide solution used has a concentration generally of between 10 and 50% by weight. It is possible to add a base, preferably a tertiary amine, in order to trap the liberated hydracid.
- tertiary amines include, but are not limited to, triethylamine, tri-n-propylamine, tri-n-butylamine, methyldibutylamine, methyldicyclohexylamine, ethyldiisopropylamine, pyridine, N, N-diethylcyclohexylamine, 4-dimethylaminopyridine, N-methylpiperidine, N-ethylpiperidine, Nn-butylpiperidine, 1,2-dimethylpiperidine, N-methylpyrrolidine, 1,2-dimethylpyrrolidine.
- aromatic amines such as, for example, pyridine.
- reaction of the compounds (V) and (VI) is carried out in the presence of a base, preferably in an organic solvent.
- any type of polar or apolar organic solvent or a mixture of organic solvents is used. It is also possible to use an organic solvent which is inert under the reaction conditions.
- an organic solvent which is inert under the reaction conditions.
- aliphatic or cycloaliphatic hydrocarbons, halogenated or not such as, for example, hexane, cyclohexane, dichloromethane, dichloroethane or aromatic, halogenated or non-halogenated such as benzene, toluene, xylenes or chlorobenzenes.
- esters such as methyl benzoate, methyl terephthalate, methyl adipate, dibutyl phthalate; esters or ethers of polyols such as tetraethylene glycol diacetate; linear or cyclic aliphatic ethers such as isopropyl ether, tetrahydrofuran or dioxane; aliphatic or aromatic nitriles such as acetonitrile, propionitrile, butanenitrile, isobutanenitrile, benzonitrile, benzyl cyanide.
- the concentration of the compound of formula (V) used in the solvent can vary within very wide limits. Generally, the concentration of the compound of formula (V) varies between 0.1 ef ⁇ 5 mol / L, ⁇ de ⁇ prefehce between 1.0 and 2.0 mol / L of solvent.
- the amount of base used expressed as the ratio of the number of moles of base to the number of moles of compound of formula (VI) can vary within wide limits.
- the base / compound molar ratio of formula (VH) is preferably from 1.0 to 2.0.
- the amount of compound of formula (VI) used expressed as the ratio between the number of moles of compound of formula (VI) and the number of moles of compound of formula (V) advantageously varies between 0.5 and 1.0. .
- the temperature at which reaction is carried out of compounds (V) and (Vl) is between -15 ° C and 5O 0 C 1 preferably between 0 0 C and room temperature (usually between 15 0 C and 25 0 C).
- Another mode of preparation consists in adding the compound of formula (VI) in a reaction medium comprising the base and the amine compound, optionally an organic solvent.
- the compound of formula (IV) is recovered in a conventional manner. It is possible, for example, to add water, separate the organic phase and then dry it, in particular using sodium sulphate.
- the compound obtained is used to prepare the chiral compound.
- the conversion ratio (TT) corresponds to the ratio between the number of moles of substrate transformed and the number of moles of substrate involved.
- the yield (RR) corresponds to the ratio between the number of moles of product formed and the number of moles of substrate engaged.
- the enantiomeric excess ee corresponds to the ratio between the excess (R) - the excess (S) over the excess (R) + the excess (S).
- Example 3 the catalyst which will be used in Example 3 is prepared after deprotection carried out according to the procedure of Example 2.
- reaction mixture is brought to 0 ° C. and 0.32 g (2.9 mmol, 1.0 eq.) Of ethylchloroformate are added dropwise.
- the temperature of the reaction mixture is then allowed to rise to 25 ° C. over 14 h and then refluxed for 3 h.
- the analyzes are as follows:
- the reactor is placed under a hydrogen atmosphere (5 bar, 40 ° C.) for 4 hours.
- Example 3 The catalyst prepared according to the preceding examples (2 mg, 0.1 eq.) And para-nitrobenzaldehyde (7 mg, 0.0464 mmol) are introduced into a reactor under a nitrogen atmosphere before injecting 400 .mu.l of acetonitrile.
- the system is sealed to best contain acetone and then stirred overnight.
- Example 3 The operating procedure of Example 3 is repeated, but the aldehyde is varied.
- Example 3 The operating procedure of Example 3 is repeated, but the Rf group of the catalyst is varied.
- the Rf group in the catalyst is a -C 6 H 6 -CH 3 tolyl group.
- the mixture is stirred for 48 hours and then treated as before.
- the aldolization product is then obtained with a yield of 92% and an enantioselectivity of 99%.
- Example 2 The catalyst of Example 2 (0.15 eq), o-nitrobenzoic acid (0.30 eq) and alpha-chloro-cinnamaldehyde (19 mg, 0.114 mmol, 1 eq) are introduced into the reactor.
- the tert-butyl acetoacetate is then added (200 ⁇ l) so as to solubilize all the reagents followed by the amount of water (10 eq.).
- the reaction medium is stirred for 3 days.
- the tert-butyl acetoacetate is then removed under high vacuum (2 - 8.10 -4 mbar) and the residue analyzed by NMR.
- the majority compound obtained has the following chemical formula:
- the conversion is 80%.
- the enantioselectivity (ee) of the reaction is 92% determined by HPLC on a Daicel Chiralpack IB column, eluent hexane / tert-butyl methyl ether 75:25.
- the NMR characteristics of the product obtained are as follows:
- Example 14 is repeated, but in reaction with tert-butyl acetoacetate, the following aldehyde:
- the enantiomeric excess is determined on a Daicel Chiralpack IB column, eluent hexane / tert-butyl methyl ether 50:50.
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Abstract
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0411701A FR2877335A1 (fr) | 2004-11-03 | 2004-11-03 | Utilisation d'un acide carboxylique aromatique dans une reaction de catalyse asymetrique |
| FR0411701 | 2004-11-03 |
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| Publication Number | Publication Date |
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| WO2006048546A1 true WO2006048546A1 (fr) | 2006-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/FR2005/002717 Ceased WO2006048546A1 (fr) | 2004-11-03 | 2005-10-28 | Utilisation d'un acide carboxylique aromatique dans une reaction de catalyse asymetrique |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150210626A1 (en) * | 2014-01-29 | 2015-07-30 | Dennis Michael Godek | Cycloalkyl-Diamines |
| US9283196B1 (en) * | 2013-01-30 | 2016-03-15 | MediSynergics, LLC | Cycloalkyl-diamines for CNS disorders |
| US9381170B2 (en) * | 2013-01-30 | 2016-07-05 | MediSynergics, LLC | Cycloalkyl-diamines for neurodegenerative disorders |
| CN119661407A (zh) * | 2024-12-26 | 2025-03-21 | 浙江大学 | 一种手性亚磺酰胺羧酸化合物、其合成方法及应用 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000076942A1 (fr) * | 1999-06-15 | 2000-12-21 | Rhodia Chimie | Sulfonylamides et carboxamides et leur application en catalyse asymetrique |
| US20040019239A1 (en) * | 2000-11-01 | 2004-01-29 | Trost Barry M. | Catalytic compositions and methods for asymmetric aldol reactions |
-
2004
- 2004-11-03 FR FR0411701A patent/FR2877335A1/fr active Pending
-
2005
- 2005-10-28 WO PCT/FR2005/002717 patent/WO2006048546A1/fr not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000076942A1 (fr) * | 1999-06-15 | 2000-12-21 | Rhodia Chimie | Sulfonylamides et carboxamides et leur application en catalyse asymetrique |
| US20040019239A1 (en) * | 2000-11-01 | 2004-01-29 | Trost Barry M. | Catalytic compositions and methods for asymmetric aldol reactions |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9283196B1 (en) * | 2013-01-30 | 2016-03-15 | MediSynergics, LLC | Cycloalkyl-diamines for CNS disorders |
| US9345673B2 (en) * | 2013-01-30 | 2016-05-24 | MediSynergics, LLC | Anti-cancer cycloalkyl diamines |
| US9381170B2 (en) * | 2013-01-30 | 2016-07-05 | MediSynergics, LLC | Cycloalkyl-diamines for neurodegenerative disorders |
| US20150210626A1 (en) * | 2014-01-29 | 2015-07-30 | Dennis Michael Godek | Cycloalkyl-Diamines |
| US9126891B2 (en) * | 2014-01-29 | 2015-09-08 | MediSynergics, LLC | Cycloalkyl-diamines |
| CN119661407A (zh) * | 2024-12-26 | 2025-03-21 | 浙江大学 | 一种手性亚磺酰胺羧酸化合物、其合成方法及应用 |
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| FR2877335A1 (fr) | 2006-05-05 |
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