Highly Enantioselective Rh<sub>2</sub>(<i>S</i>-DOSP)<sub>4</sub>-Catalyzed Cyclopropenation of Alkynes with Styryldiazoacetates
作者:John F. Briones、Jørn Hansen、Kenneth I. Hardcastle、Jochen Autschbach、Huw M. L. Davies
DOI:10.1021/ja106509b
日期:2010.12.8
Dirhodium tetrakis((S)-N-(dodecylbenzenesulfonyl)prolinate) (Rh2(S-DOSP)4) is an effective catalyst for highlyenantioselectivecyclopropenationreactions between terminal alkynes and arylvinyldiazoacetates. The resulting vinylcyclopropenes can undergo rhodium-catalyzed regioselective rearrangement to cyclopentadienes. Computational studies indicate that the high enantioselectivity of the process is