Fig. 6: Investigation of the asymmetric induction mechanism.

a Nonlinear effect study. b Detection and characterization of the reaction intermediate. c Preparation of allyl phosphate of CPA A7 and its reaction with ketone 1a under the standard conditions. d Cross experiment of INT-A2w. e Asymmetric reaction of allyl benzyl ether 6a with ketone 1a under the standard conditions.