Patent ID: 7009079

Claim:
An optically active salicylideneaminoalcohol compound of formula (1): wherein R 1 represents an alkyl group which may be substituted with a group selected from an alkoxy group, an aralkyloxy group, an aryloxy group and cycloalkoxy group, an aralkyl, aryl or cycloalkyl group all of which may be substituted with a group selected from an alkyl group, an alkoxy group, an aralkyloxy group, an aryloxy group and a cycloalkoxy group, R 2 represents an alkyl group, a cycloalkyl group, or an aralkyl or phenyl group which may be substituted with a group selected from an alkyl group, an alkoxy group, an aralkyloxy group, an aryloxy group and a cycloalkoxy group, when X 1 represents a nitro group, X 2 is a hydrogen atom, when X 1 represents a chlorine atom, X 2 is a chlorine atom, and when X 1 is a hydrogen atom, X 2 is a fluorine atom; and the carbon atom denoted by “*” is an asymmetric carbon atom having either an S or R configuration.