Sterically Controlled Cu-Catalyzed or Transition-Metal-Free Cross-Coupling of <i>gem</i>-Difluoroalkenes with Tertiary, Secondary, and Primary Alkyl Grignard Reagents
作者:Wenpeng Dai、Hongyan Shi、Xianghu Zhao、Song Cao
DOI:10.1021/acs.orglett.6b02026
日期:2016.9.2
transition-metal-free cross-coupling of gem-difluoroalkenes with tertiary, secondary, and primary alkylGrignardreagents has been developed. Remarkably, the tertiary and secondary alkylation of gem-difluoroalkenes proceeded very smoothly in the presence of 25 mol % of CuCN or under transition-metal-free conditions, affording the tertiary and secondary alkyl-substituted fluoroalkenes in good to excellent yields with