Abstract: There is disclosed an optically active salicylideneaminoalcohol compound of formula (1): wherein R1 represents an alkyl group or the like, R2 represents an aryl group and the like, and when X1 represents a nitro, X2 is a hydrogen atom, when X1 represents a chlorine atom, X2 is a chlorine atom, and when X1 is a hydrogen atom, X2 is a fluorine atom; and the carbon atom denoted by “*” is an asymmetric carbon atom having either an S or R configuration, and a chiral copper complex produced from the optically active salicylidenaminoalcohol compound and a copper compound.

Abstract: There is disclosed an optically active salicylideneaminoalcohol compound of formula (1): wherein R1 represents an alkyl group or the like, R2 represents an aryl group and the like, and when X1 represents a nitro, X2 is a hydrogen atom, when X1 represents a chlorine atom, X2 is a chlorine atom, and when X1 is a hydrogen atom, X2 is a fluorine atom; and the carbon atom denoted by “*” is an asymmetric carbon atom having either an S or R configuration, and a chiral copper complex produced from the optically active salicylidenaminoalcohol compound and a copper compound.

Abstract: Disclosed is an asymmetric copper catalyst composition comprising, as components, (a) an optically active bisoxazoline compound of formula (1): wherein R1 and R2 are different and each represents a hydrogen atom, an alkyl group, a cycloalkyl group, or a phenyl or aralkyl group which may be substituted, R3 and R4 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, or a phenyl or aralkyl group which may be substituted, or R3 and R4 may be bonded to each other to form a C3-5 cyclic alkylene group, R5 represents a hydrogen atom or a C1-6 alkyl group, or the two R5 groups may be bonded to each other to represent a C3-5 cyclic alkylene group, (b) a monovalent or divalent copper compound, and (c) a strong acid or a Lewis acid or a mixture thereof, and a process for producing an optically active cyclopropanecarboxylate using the same.

Abstract: There is disclosed an optically active salicylideneaminoalcohol compound of formula (1): wherein R1 represents an alkyl group or the like, R2 represents an aryl group and the like, and when X1 represents a nitro, X2 is a hydrogen atom, when X1 represents a chlorine atom, X2 is a chlorine atom, and when X1 is a hydrogen atom, X2 is a fluorine atom; and the carbon atom denoted by “*” is an asymmetric carbon atom having either an S or R configuration, and a chiral copper complex produced from the optically active salicylidenaminoalcohol compound and a copper compound.

Abstract: There are disclosed asymmetric copper complex comprising, as components, (a) an optically active bisoxazoline compound of formula (1): 1

Abstract: There is disclosed chiral copper complex catalyst composition, which is obtained by contacting an optically active N-salicylideneaminoalcohol compound of formula (1): with a mono-valent or di-valent copper compound in an inert solvent, wherein R1 and R2 represent an alkyl group and the like, X1 and X2 represent a hydrogen atom, a halogen atom, a nitro group, an alkyl group, an alkoxy group, a cyano group or the like, and the amount of the mono-valent or di-valent copper compound is less than 1 mole per 1 mole of the optically active N-salicylideneaminoalcohol compound of formula (1), and a process for producing an optically active cylopropane-carboxylic acid ester using the same.

Abstract: Disclosed is a method for producing an optically active chrysanthemic acid, which method is characterized by optical resolution of a chrysanthemic acid having a trans isomer ratio of not less than 70% and an optical purity of 2% e.e. to less than 10% e.e. with an optically active organic.

Abstract: An optically active bisoxazoline compound of the formula [I]: wherein R1 represents alkyl group, cycloalkyl group, aralkyl group, phenyl group which may be substituted or alkoxy group and two geminal alkyl groups may be joined together to form a cyclic structure; R2 represents alkyl group, cycloalkyl group, aralkyl group, phenyl group which may be substituted; R3 represents hydrogen atom, (C2-C4)alkyl group or cycloalkyl group; and the asterisk * represents an asymmetric carbon atom

Abstract: There are provided a process for producing an alkenyl-substituted aromatic hydrocarbon by alkenylation of an alkyl-substituted aromatic hydrocarbon having a hydrogen atom at the &agr;-position of a side chain thereof with a conjugated diene, using a catalyst obtained by the action of an alkali metal compound and an alkali metal or an alkali metal hydroxide on an metal oxide selected from alumina or hydrotalcite by heating in a specific temperature range; and a process for producing an alkenyl-substituted aromatic hydrocarbon, characterized in that the reaction is carried out in the presence of an alkylaminopyridine of formula (1): wherein R1 is hydrogen or C1-C6 lower alkyl, and R1 is C1-C6 lower alkyl, using as a catalyst, Na metal, K metal, or an alloy thereof, or a catalyst carrying any of them on an inorganic compound support, or a catalyst obtained by the action of an alkali metal compound and alkali metal or an alkali metal hydride on a metal oxide selected from alumina, alkaline earth

Abstract: There is disclosed a method for producing 2,3-dimethylbutene-1 and 2,3-dimethylbutene-2, which is characterized by the steps of (a) dimerizing propylene in a propylene-dimerization step using a nickel complex catalyst as described below as a propylene-dimerization catalyst having propylene-dimerization activity and DMB-1 selectivity, (b) rectifying the resulting reaction solution to obtain 2,3-dimethylbutene-1 as a distillate and a distillation residue containing 2,3-dimethylbutene-1 in a 2,3-dimethylbutene-1 distillation step, (c) allowing the distillation residue to contact with sulfuric acid, sulfonic acid or hetetopolyacid to isomerize 2,3-dimethylbutene-1 in said distillation residue into 2,3-dimethylbutene-2 in an isomerization step, and (d) rectifying the resulting isomerization reaction solution to obtain 2,3-dimethylbutene-2 in a 2,3-dimethylbutene-2 distillation step, wherein said nickel complex catalyst containing (A) at least one nickel compound and the like, (B) a trialkylaluminum, (C) a

Abstract: There is disclosed an optically active salicylideneaminoalcohol compound of formula (1): 1

Abstract: There is disclosed chiral copper complex catalyst composition, which is obtained by contacting an optically active N-salicylideneaminoalcohol compound of formula (1): 1

Abstract: The present invention relates to a process for producing optically active halomethyl phenyl carbinols of the formula (1), comprising reducing halomethyl phenyl ketones of the formula (2) using an asymmetric reducing agent obtained from boranes and optically active .alpha.-phenyl-substituted-.beta.-amino alcohols of the formula (3) or optically active .alpha.-non-substituted-.beta.-amino alcohols of the formula (4).The present invention further relates to a process for producing optically active carbinols, comprising reacting a prochiral ketone with, an asymmetric reducing agent obtained from optically active .beta.-amino alcohols of the formula (5), a metal boron hydride and Lewis acid or lower dialkyl sulfuric acid. All of the formulas (1) to (5) are the same as shown in the specification.

Abstract: An optically active bisoxazoline compound of the formula [I]: ##STR1## wherein R.sub.1 represents alkyl group, cycloalkyl group, aralkyl group, phenyl group which may be substituted or alkoxy group and two geminal alkyl groups may be joined together to form a cyclic structure;R.sub.2 represents alkyl group, cycloalkyl group, aralkyl group, phenyl group which may be substituted;R.sub.3 represents hydrogen atom, (C2-C4)alkyl group or cycloalkyl group; andthe asterisk * represents an asymmetric carbon atom.

Abstract: A process for preparing an optically active alcohol by reacting a prochiral ketone corresponding to the optically active alcohol and an acid with a mixture of (1) a boron-containing compound selected from the group consisting of i) a borane compound which is obtained from an optically active .beta.-aminoalcohol and a boron hydride; or obtained from the optically active .beta.-aminoalcohol, a metal borohydride and an acid and ii) an optically active oxazaborolidine and (2) a metal borohydride; and a process for preparing an optically active amine by reacting an oxime derivative and an acid with a mixture of (1) a boron-containing compound selected from the group consisting of i) a borane compound which is obtained from an optically active .beta.-aminoalcohol and a boron hydride, or obtained from said optically active .beta.-aminoalcohol, a metal borohydride and an acid and ii) an optically active oxazaborolidine, and (2) a metal borohydride.

Abstract: A process for producing an optically active cyclopropanecarboxylic acid ester which is characterized by reacting a prochiral olefin with a diazoacetic acid ester in the presence of a copper complex obtained by reacting an optically active bisoxazoline ligand with a copper compound.

Abstract: There is provided a process for producing an alkenyl-substituted pyridine derivative using, a solid base catalyst which is obtained by heating a metal oxide selected from the group consisting of alumina, an alkaline earth metal oxide and a hydrotalcite withan alkali metal,an alkali compound and an alkali metal oran alkali compound and an alkali metal hydride under an inert gas atmosphere at a temperature within the range of 100-700.degree. C.

Abstract: The present invention relates to a process for producing optically active halomethyl phenyl carbinols of the formula (1), comprising reducing halomethyl phenyl ketones of the formula (2) using an asymmetric reducing agent obtained from boranes and optically active .alpha.-phenyl-substituted-.beta.-amino alcohols of the formula (3) or optically active .alpha.-non-substituted-.beta.-amino alcohols of the formula (4).The present invention further relates to a process for producing optically active carbinols, comprising reacting a prochiral keytone with an asymmetric reducing agent obtained from optically active .beta.-amino alcohols of the formula (5), a metal boron hydride and Lewis acid or lower dialkyl sulfuric acid. All of the formulas (1) to (5) are the same as shown in the specification.

Abstract: A process for preparing an optically active alcohol by reacting a prochiral ketone corresponding to the optically active alcohol and an acid with a mixture of (1) a boron-containing compound selected from the group consisting of i) a borane compound which is obtained from an optically active .beta.-aminoalcohol and a boron hydride; or obtained from the optically active .beta.-aminoalcohol, a metal borohydride and an acid and ii) an optically active oxazaborolidine and (2) a metal borohydride; and a process for preparing an optically active amine by reacting an oxime derivative and an acid with a mixture of (1) a boron-containing compound selected from the group consisting of i) a borane compound which is obtained from an optically active .beta.-aminoalcohol and a boron hydride, or obtained from said optically active .beta.-aminoalcohol, a metal borohydride and an acid and ii) an optically active oxazaborolidine, and (2) a metal borohydride.

Abstract: The present invention provides a process for producing (R)-styrene oxides represented by the formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and X are as defined in the specification, which comprises treating a mixture of (R)- and (S)-phenylhalogenomethylcarbinols with a lipase in the presence of a carboxylate to preferentially convert the (S)-phenylhalogenomethylcarbinols, and treating a mixture of the formed carbinol alkylates (3) and (R)-phenylhalogenomethylcarbinols with a base to cyclize the (R)-phenylhalogenomethylcarbinols, and also provides an industrially excellent process for producing (R)-styrene oxides (1) which comprises using a mixture enriched with (R)-phenylhalogenomethylcarbinols as the mixture of (R)- and (S)-phenylhalogenomethylcarbinols (2).