Abstract
α,β‐Unsaturated sulfones derivatives 5 was prepared from sodium p‐toluenesulfinate (1) and the products reacted with substituted‐carbomethoxymethyltriphenylarsonium bromide 6 in the presence of potassium carbonate at room temperature to give cyclopropane derivatives 2‐substituted‐3‐substitutedphenyl‐4‐p‐toluenesulfonyl‐5‐phenyl‐trans‐2,3‐dihydrofurans 7 and/or 8 with high stereoselectivity.
Acknowledgment
Thanks are due to the National Science Foundation of China for financial support.