Asymmetric Direct Vinylogous Aldol Reaction of Furanone Derivatives Catalyzed by an Axially Chiral Guanidine Base
作者:Hitoshi Ube、Naoki Shimada、Masahiro Terada
DOI:10.1002/anie.200906647
日期:2010.3.1
Ace of Base: The first highly enantioselective directvinylogousaldolreaction of dihalogenated or α‐thio‐substituted furanones with aldehydes utilizes an axially chiral guanidine base catalyst. The method provides facile access to enantioenriched γ‐substituted butenolides.