Regio- and Stereoselective Construction of ?-Butenolides through Phosphine-Catalyzed Substitution of Morita-Baylis-Hillman Acetates: An Organocatalytic Allylic Alkylation
作者:Chang-Woo Cho、Michael J. Krische
DOI:10.1002/anie.200461381
日期:2004.12.10
Diastereo- and Enantioselective Construction of γ-Butenolides through Chiral Phosphane-Catalyzed Allylic Alkylation of Morita-Baylis-Hillman Acetates
作者:Yin Wei、Guang-Ning Ma、Min Shi
DOI:10.1002/ejoc.201100704
日期:2011.9
series of multifunctional, chiral amide phosphane organocatalysts have been designed and synthesized for the allylicsubstitution of Morita-Baylis-Hillman (MBH) acetate with 2-trimethylsilyloxyfuran for butenolide synthesis. This reaction was achieved in good to excellent yield (42-98 %) and high ee (85-99 %) with respect to a wide range of substrates in absolute MeOH or CH(3)CN, using chiral amide phosphane