Abstract: Disclosed is a method for producing a hexafluoroisopropanol, including the steps of (a) purifying a mixture containing hexafluoroacetone and at least 1,1,1-trifluoro-2,2-dichloroethane as an impurity, thereby obtaining a purified hexafluoroacetone containing 120 ppm or lower of the 1,1,1-trifluoro-2,2-dichloroethane; and (b) bringing hydrogen (H2) into contact with the purified hexafluoroacetone in the presence of a catalyst, thereby hydrogenating the hexafluoroacetone into the hexafluoroisopropanol. It is possible by this method to produce the hexafluoroisopropanol with a short reaction time and a high conversion. Therefore, it is possible to particularly advantageously produce fluoromethyl hexafluoroisopropyl ether (sevoflurane) by using the hexafluoroisopropanol produced by the method.

Abstract: Disclosed is a purification method of reducing and removing fluoride ions contained in an optically active ?-fluorocarboxylic acid ester represented by formula [1] [in the formula, R1 represents a C1-6 alkyl group, R2 represents a C1-4 alkyl group, and * represents an asymmetric carbon], the purification method of the optically active ?-fluorocarboxylic acid ester being characterized by that a distillation is conducted in the presence of an organic base. By this method, it is possible to greatly reduce the concentration of fluoride ion traces contained in the optically active ?-fluorocarboxylic acid ester by a relatively easy operation. Of the organic base, a tertiary amine is preferable, and above all tri-n-butylamine is particularly preferable.

Abstract: An optically active ?-fluorocarboxylate is produced by reacting an optically active ?-hydroxycarboxylate with sulfuryl fluoride (SO2F2), trifluoromethanesulfonyl fluoride (CF3SO2F) or nonafluorobutanesulfonyl fluoride (C4F9SO2F) in the presence of organic base and in the absence of reaction solvent. More preferably, a distillation purification is conducted after adding acid to the reaction-terminated liquid. With this, it is possible to produce an optically active ?-fluorocarboxylate of a still higher purity. It is possible by this process to advantageously produce an optically active ?-fluorocarboxylate on a large-amount scale.

Abstract: Disclosed is a purification method of reducing and removing fluoride ions contained in an optically active ?-fluorocarboxylic acid ester represented by formula [1] [in the formula, R1 represents a C1-6 alkyl group, R2 represents a C1-4 alkyl group, and * represents an asymmetric carbon], the purification method of the optically active ?-fluorocarboxylic acid ester being characterized by that a distillation is conducted in the presence of an organic base. By this method, it is possible to greatly reduce the concentration of fluoride ion traces contained in the optically active ?-fluorocarboxylic acid ester by a relatively easy operation. Of the organic base, a tertiary amine is preferable, and above all tri-n-butylamine is particularly preferable.

Abstract: An optically active ?-fluorocarboxylate is produced by reacting an optically active ?-hydroxycarboxylate with sulfuryl fluoride (SO2F2), trifluoromethanesulfonyl fluoride (CF3SO2F) or nonafluorobutanesulfonyl fluoride (C4F9SO2F) in the presence of organic base and in the absence of reaction solvent. More preferably, a distillation purification is conducted after adding acid to the reaction-terminated liquid. With this, it is possible to produce an optically active ?-fluorocarboxylate of a still higher purity. It is possible by this process to advantageously produce an optically active ?-fluorocarboxylate on a large-amount scale.

Abstract: An aromatic compound represented by the general formula Ar1X is reacted with a palladium compound and a phosphine derivative, in the presence of a first basic substance, thereby producing a palladium-complex compound represented by the general formula Ar1—PdL2X. This palladium-complex compound is reacted with a benzoic acid represented by the general formula Ar2—COOH, in the presence of a second basic substance, thereby producing another palladium-complex compound represented by the following general formula. The above palladium-complex compounds are useful as catalysts and can be produced easily by the above reactions. In the above general formulas, Ar1 is an aryl group; and X is a halogen that is fluorine, chlorine, bromine or iodine, trifluoromethanesulfonate group, an alkylsulfonate group having a carbon atom number of 1-4, or a substituted or unsubstituted arylsulfonate group; each L is independently a phosphine ligand; and Ar2 is an aryl group.

Abstract: An aromatic compound represented by the general formula Ar1X is reacted with a palladium compound and a phosphine derivative, in the presence of a first basic substance, thereby producing a palladium-complex compound represented by the general formula Ar1—PdL2X. This palladium-complex compound is reacted with a benzoic acid represented by the general formula Ar2—COOH, in the presence of a second basic substance, thereby producing another palladium-complex compound represented by the following general formula.

Abstract: A method of producing benzamides represented by the following general formula (1): where R is trifluoromethyl group, trifluoromethyloxy group, halogen (fluorine, chlorine, bromine or iodine), nitro group, acetyl group, cyano group, alkyl group having 1 to 4 carbon atoms, alkoxy group having 1 to 4 carbon atoms, or a alkoxycarbonyl group having 2 to 5 carbon atoms; and n is 0 or an integer ranging from 1 to 3.

Abstract: The invention relates to a method for producing a benzoic acid derivative represented by the general formula (1). The method includes the step of reacting an aromatic compound represented by the general formula (2), with carbon monoxide and a hydroxy compound (i.e., water or an alcohol), in the presence of (a) a metal compound containing a metal of 8, 9 and 10 groups of periodic table, (b) a first phosphine derivative represented by the general formula (R1)2P—Q—P(R1)2, and (c) a base, It is possible to easily and efficiently produce the benzoic acid derivative by the method.

Abstract: The invention relates to a method of preparing 2-chloro-pyridinemethanol represented by the following formula (1). The method includes the steps of: (a) reacting 2-chloro-monochloromethylpyridine with an alkali metal salt of a carboxylic acid and/or a hydrate of the alkali metal salt so as to form an ester derivative; and (b) hydrolyzing the ester derivative so as to form the 2-chloro-pyridinemethanol.