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.
Efficient Baylis−Hillman Reactions of Cyclic Enones in Methanol As Catalyzed by Methoxide Anion
作者:Sanzhong Luo、Xueling Mi、Hui Xu、Peng George Wang、Jin-Pei Cheng
DOI:10.1021/jo0491760
日期:2004.11.1
The Baylis−Hillman reactions of cyclic enones with a variety of aldehydes were investigated. 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) was found to be a viable catalyst in promoting the reactions of sterically retarded substrates in methanol. The reactions showed clear solvent dependence and only occurred in hydroxylic solvents, especially in methanol. Further consideration on the steric character of