Blaise Reaction of Ethyl 3-Bromodifluoromethyl-3-benzyloxyacrylate with Nitriles: A Convenient Synthesis of α-Difluorovinyl-Substituted β-Enaminoesters and β-Ketoesters
作者:Shizheng Zhu、Weimin Peng、Jingwei Zhao
DOI:10.1055/s-2006-926436
日期:2006.5
The Blaise reaction between the zinc dienolate of ethyl 3-bromodifluoromethyl-3-benzyloxyacrylate and a variety of nitriles gave a series of a-difluorovinyl substituted beta-enaminoesters in good yield, which readily underwent hydrolysis to the corresponding beta-ketoesters. Direct coupling of this zinc dienolate with acyl chloride also furnished the same a-difluorovinyl substituted beta-ketoester