Cu(I)-Catalyzed Cross-Coupling of Terminal Alkynes with Trifluoromethyl Ketone <i>N</i>-Tosylhydrazones: Access to 1,1-Difluoro-1,3-enynes
作者:Zhikun Zhang、Qi Zhou、Weizhi Yu、Tianjiao Li、Guojiao Wu、Yan Zhang、Jianbo Wang
DOI:10.1021/acs.orglett.5b00980
日期:2015.5.15
elimination have been achieved in a Cu(I)-catalyzed cross-coupling reaction of terminal alkynes and trifluoromethyl ketone N-tosylhydrazones. The reaction represents an efficient synthesis of 1,1-difluoro-1,3-enyne derivatives. Mechanistically, the migratory insertion of the copper carbene intermediate leads to the C–C bond formation, which is followed by C–F bond cleavage.