A one-pot synthesis of 2,2-difluorovinyl carbonyl compounds from 2,2,2,-trifluoroethyl p-toluenesulfonate via 2,2-difluorovinylboranes
作者:Junji Ichikawa、Sumikazu Hamada、Takaaki Sonoda、Hiroshi Kobayashi
DOI:10.1016/s0040-4039(00)74125-6
日期:1992.1
2,2,2-Trifluoroethyl p-toluenesulfonate is treated with butyllithium and trialkylboranes successively to generate 1-alkyl-2,2-difluorovinylboranes, which in turn react with acyl chlorides or chloroformates in the presence of cuprous iodide to afford 2,2-difluorovinyl carbonyl compounds in good yields.
对甲苯磺酸2,2,2-三氟乙基苯酯依次用丁基锂和三烷基硼烷处理,生成1-烷基-2,2-二氟乙烯基硼烷,然后在碘化亚铜存在下与酰基氯或氯甲酸酯反应生成2,2-二氟乙烯基羰基化合物,收率高。