Optically active bisoxazoline compound, asymmetric catalyst, and process for producing optically active cyclopropane compound using the same

摘要

An optically active bisoxazoline compound represented by formula (1):
wherein R 1 , R 2 and R 3 each independently represent an alkyl group having 1 to 8 carbon atoms, a phenyl group or a benzyl group, n represents an integer of 0 to 3 and * represents an asymmetric center.