[Bmim]OAc Catalyzed Michael Addition of Active Methylene to <em>α</em>,<em>β</em>-Unsaturated Carboxylic Esters and Nitriles

YANG Yu, WANG Li-bing, ZHANG Zhan, LI Cai-meng, FU Xian-lei and GAO Guo-hua*

Chemical Research in Chinese Universities . 2010, (4): 554 -557 .