Synthesis of stereodefined fused δ-hydroxy-γ-lactones from dealkylative cyclization of epoxy-diesters
摘要:
A dealkylative lactonization of stereodefined aryl-substituted epoxides allows the preparation of densely functionalized fused delta-hydroxy-gamma-lactones having three consecutive stereochemically defined stereocenters. (C) 2011 Elsevier Ltd. All rights reserved.
Efficient, Transition Metal Mediated, Sequential, Two- and Three-Component Coupling Reactions for the Synthesis of Highly Substituted Five-Membered Ring Carbocycles
作者:Nicolas Coia、Didier Bouyssi、Geneviève Balme
DOI:10.1002/ejoc.200700197
日期:2007.7
Cu-catalysed method for the preparation of highlysubstituted methylenecyclopentanes, through a sequence involving a Michael addition of stabilized enolates to activated enynes followed by an intramolecular carbocupration reaction, is presented. This method was also successfully combined with a Pd-mediated coupling reaction to perform a new three-component reaction through a transmetallation pathway on
A dealkylative lactonization of stereodefined aryl-substituted epoxides allows the preparation of densely functionalized fused delta-hydroxy-gamma-lactones having three consecutive stereochemically defined stereocenters. (C) 2011 Elsevier Ltd. All rights reserved.