Pd‐Catalyzed Selective Carbonylation of
<i>gem</i>
‐Difluoroalkenes: A Practical Synthesis of Difluoromethylated Esters
作者:Jiawang Liu、Ji Yang、Francesco Ferretti、Ralf Jackstell、Matthias Beller
DOI:10.1002/anie.201813801
日期:2019.3.26
described. This novel catalytic transformation proceeds in the presence of Pd(acac)2/1,2‐bis((di‐tert‐butylphosphan‐yl)methyl)benzene (btbpx) (L4) and allows for an efficient and straightforward access to a range of difluoromethylated esters in high yields and regioselectivities. The synthetic utility of the protocol is showcased in the practical synthesis of a Cyclandelate analogue using this methodology
描述了宝石二氟烯烃烷氧基羰基化的第一种催化剂。在Pd(acac)2 / 1,2-双((二叔丁基膦基)甲基)苯(btbpx)(L4)的存在下进行这种新颖的催化转化过程,可以有效而直接地获得一系列二氟甲基化酯的高收率和区域选择性。使用该方法学作为关键步骤,在环戊酸酯类似物的实际合成中展示了该协议的综合用途。