Remarkable Rate Acceleration of Imidazole-Promoted Baylis−Hillman Reaction Involving Cyclic Enones in Basic Water Solution
作者:Sanzhong Luo、Peng George Wang、Jin-Pei Cheng
DOI:10.1021/jo035345p
日期:2004.1.1
The Baylis−Hillmanreaction of cyclic enones was greatly accelerated in basic water solution with imidazoles as catalysts, which resulted in short reaction time, high yields, and expanding substrate scopes. Bicarbonate solution was shown to be the optimal reaction medium for the reaction in this study. The apparent “enhanced basicity” of imidazoles accounted for the rate increase in alkaline solution
A Highly Active and Selective Catalyst System for the Baylis–Hillman Reaction
作者:Jingsong You、Juhua Xu、John G. Verkade
DOI:10.1002/anie.200352233
日期:2003.10.27
The azoles: effective catalysts for Baylis–Hillman reaction in basic water solution
作者:Sanzhong Luo、Xueling Mi、Peng George Wang、Jin-Pei Cheng
DOI:10.1016/j.tetlet.2004.04.136
日期:2004.6
The azoles, which were inactive in neutral aqueous media, could be activated in alkaline solution and effectively catalyze the Baylis-Hillman reaction involving cyclic enones. (C) 2004 Elsevier Ltd. All rights reserved.
Evaluating the Baylis-Hillman Reaction of Cyclic Enones Using Surfactants in Water
Conjugated cyclic enones react smoothly in water with a variety of aldehydes (Baylis-Hillman reaction) in the presence of surfactants above their critical micelle concentrations (CMC).