A facile synthesis of disubstituted 1,1-difluoro-1-alkenes via double transmetalation of 2,2-difluorovinylboranes
作者:Junji Ichikawa、Toru Minami、Takaaki Sonoda、Hiroshi Kobayashi
DOI:10.1016/0040-4039(92)80023-d
日期:1992.6
butyllithium and trialkylboranes successively to generate 1-alkyl-2,2-difluorovinylboranes, which couple with aryl iodides in the presence of cuprous iodide and palladium catalyst to afford 1,1-difluoro-1-alkenes in excellent yields.
用丁基锂和三烷基硼烷依次处理2,2,2-三氟乙基对甲苯磺酸盐,生成1-烷基-2,2-二氟乙烯基硼烷,在碘化亚铜和钯催化剂存在下与芳基碘化物偶合,得到1,1-二氟-1-烯烃的收率极高。