Highly enantioselective preparation of tricyclo[4.4.0.05,7]decene derivatives via catalytic asymmetric intramolecular cyclopropanation reactions of α-diazo-β-keto esters
作者:Ryoji Ida、Masahisa Nakada
DOI:10.1016/j.tetlet.2007.05.046
日期:2007.7
The enantioselectivepreparation of the tricyclo[4.4.0.05,7]dec-2-ene derivativesvia the catalytic asymmetric intramolecular cyclopropanation (CAIMCP) reactions of α-diazo-β-keto esters with excellent ee (95–98% ee) is described. The chiral building blocks reported herein would be versatile intermediates for enantioselective natural products synthesis.