Investigations on Transition-State Geometry in the Lewis Acid- (Mukaiyama) and Fluoride-Promoted Aldol Reactions
摘要:
The stereochemical course of the Lewis acid-and fluoride ion-promoted aldol reaction has been studied with model 1. Cyclizations of 1 show a modest preference for reaction via an antiperiplanar (open transition state) orientation of reactants in the presence of a wide range of Lewis acids and fluoride sources.