Enantioselective Epoxidation of Conjugated <i>cis</i>-Enynes by Chiral Dioxirane
作者:Christopher P. Burke、Yian Shi
DOI:10.1021/jo070205r
日期:2007.5.1
This paper describes a highly chemo- and enantioselectiveepoxidation of conjugated cis-enynes using readily available glucose-derived ketone 2 as catalyst and Oxone as oxidant to form cis-propargyl epoxides in high ee's. The interaction between the alkyne group of the substrate and the oxazolidinone moiety of the ketone catalyst as well as the interactions between the substituents on enynes and the