Patent ID: 7709651
Filing Date: 2010-05-04
Classification: C07B,C07C,C07F

Abstract:
1. A process for producing an optically active cyclopropane compound represented by the formula (4): wherein R 3 , R 4 , R 5 and R 6 are the same or different, and represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted alkoxycarbonyl group; provided that, when R R wherein R 3 , R 4 , R 5 , and R 6 are as described above, with a diazoacetic acid ester represented by the formula (3): wherein R 7 is as defined above, in the presence of an asymmetric copper complex prepared from an optically active cycloalkylidenebisoxazoline compound represented by the formula (1): wherein R 1 represents a hydrogen atom, a C1-6 alkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted phenyl group, R provided that, when R