Nickel-Catalyzed <i>anti</i>-Markovnikov Hydrodifluoroalkylation of Unactivated Alkenes
作者:Li-Ming Yin、Meng-Chan Sun、Xiao-Ju Si、Dandan Yang、Mao-Ping Song、Jun-Long Niu
DOI:10.1021/acs.orglett.1c04346
日期:2022.2.4
An efficient Ni-catalyzed hydrodifluoroalkylation of unactivated alkenes with bromodifluoroacetate by using PhSiH3 as hydride source was developed. The transformation affords aliphatic difluorides with anti-Markovnikov regioselectivity. A wide range of highly remote alkenes, simple alkenes, drug molecules, commercially available CF2 precursors, and even nonfluorinated substrates are competent in this
通过使用PhSiH 3作为氢化物源,开发了一种有效的Ni 催化的未活化烯烃与溴二氟乙酸盐的氢二氟烷基化反应。该转化提供了具有抗马尔科夫尼科夫区域选择性的脂肪族二氟化物。广泛的高度远程烯烃、简单烯烃、药物分子、市售CF 2前体,甚至非氟化底物在温和条件下都能胜任该反应,证明了该策略的实用性。此外,机理研究表明,二氟烷基自由基可能是这种转变的关键中间体。