Asymmetric Synthesis of 2‐Substituted Dihydrobenzofurans and 3‐Hydroxydihydrobenzopyrans through the Enantioselective Epoxidation of <i>O</i>‐Silyl‐Protected <i>ortho</i>‐Allylphenols

Abstract

Abstract The Shi‐type epoxidation of O ‐ tert‐ butyldiphenylsilyl (TBDPS) protected o ‐allylphenols serves as an efficient strategy to construct the dihydrobenzofurans and dihydrobenzopyrans in up to 97% ee . This methodology led to the enantioselective synthesis of (+)‐marmesin, (−)‐(3′ R )‐decursinol, and (+)‐lomatin.