Chain-extension reactions via insitu capture of the dibromofluoromethide ion with difluoromethylene fluoro-olefins
作者:Donald Joseph Burton、Steven W. Hansen
DOI:10.3998/ark.5550190.0011.806
日期:——
The insitu reaction of triphenylphosphine, tribromofluoromethane, and a difluoromethylene olefin successfully allows the capture of the intermediate dibromofluoromethide ion. With fluorinated propenes, the product is an allylic dibromofluoromethyl alkene; with longer chain fluoro-olefins the major product is a 1-bromo-1,3-fluorinated diene derivative. Pentafluoropyridine yields 4-dibromofluorometh
三苯基膦、三溴氟甲烷和二氟亚甲基烯烃的原位反应成功地捕获了中间体二溴氟甲基离子。与氟化丙烯,产物是烯丙基二溴氟甲基烯烃;对于长链氟烯烃,主要产品是 1-溴-1,3-氟化二烯衍生物。五氟吡啶生成 4-二溴氟甲基四氟吡啶。