Trifluoromethylation of Allenes: An Expedient Access to α‐Trifluoromethylated Enones at Room Temperature
作者:Massimo Brochetta、Tania Borsari、Andrea Gandini、Sandip Porey、Arghya Deb、Emanuele Casali、Arka Chakraborty、Giuseppe Zanoni、Debabrata Maiti
DOI:10.1002/chem.201805097
日期:2019.1.14
A silver(I) catalyzed regioselective trifluoromethylation of allenes using Langlois's salt (NaOSOCF3) is demonstrated. This transformation enables direct expedient access to α‐trifluoromethylated acroleins, which are valuable synthons for a number of pharmaceuticals and agrochemicals containing vinyl‐CF3 moieties. Versatility of this trifluoromethylation method has been established with good yield
证明了使用兰格洛伊斯盐(NaOSOCF 3)的银(I)催化的烯丙基的区域选择性三氟甲基化。这种转变使人们可以直接方便地获得α-三氟甲基化的丙烯醛,对于许多含有乙烯基CF 3部分的药物和农用化学品而言,α-三氟甲基化的丙烯醛是有价值的合成子。已经建立了这种三氟甲基化方法的通用性,具有良好的收率和优异的区域选择性。进行了初步的实验和计算研究,以阐明此协议的机理见解。