Efficient Trifluoromethylation of Activated and Non-Activated Alkenyl Halides by Using (Trifluoromethyl)trimethylsilane
作者:Andreas Hafner、Stefan Bräse
DOI:10.1002/adsc.201100528
日期:2011.11
An efficient method for the trifluoromethylation of halogenated double bonds by using in situ generated “trifluoromethyl copper” is described. Herein, the most common trifluoromethyl source, (trifluoromethyl)trimethylsilane, was converted selectively into “trifluoromethyl copper” by using copper iodide as copper source and potassium fluoride as promoter. In 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
描述了一种通过使用原位生成的“三氟甲基铜”对卤代双键进行三氟甲基化的有效方法。在此,最常见的三氟甲基源((三氟甲基)三甲基硅烷)通过使用碘化铜作为铜源和氟化钾作为助催化剂选择性地转化为“三氟甲基铜”。在作为螯合溶剂的1,3-二甲基-3,4,5,6-四氢-2(1 H)-嘧啶酮(DMPU)中,活化和非活化链烯基卤化物的三氟甲基化反应主要以良好或优异的收率进行,最高可达克秤。