Process for the preparation of optically active triazole derivatives and their imidazolidin-2-one intermediates

摘要

A compound of the formula (Va') <CHEM> wherein Ar' is a halogenated phenyl group, R is a hydrocarbon residue having, at the alpha -carbon, a functional group selected from a silyl group, a double bond and an optionally activated hydroxyl group, R<3>' is an optionally substituted aliphatic or aromatic hydrocarbon residue or an optionally substituted aromatic heterocyclic group, and (R) and (S) represent configurations, which is an optically active intermediate for production of optically active triazole compounds (I'): <CHEM> wherein the symbols have the same meanings as defined above, and methods of preparing the compounds (Va') and (I').