Nickel‐Catalyzed Defluorinative Asymmetric Cyclization of Fluoroalkyl‐Substituted 1,6‐Enynes for the Synthesis of Seletracetam
作者:Kuai Wang、Jiachang Chen、Wenfeng Liu、Wangqing Kong
DOI:10.1002/anie.202212664
日期:2022.11.14
asymmetric cyclization of fluoroalkyl-substituted 1,6-enynes with boronic acids is achieved triggered by C(sp3)−F bond activation, which provides an expedient access to 4-fluorovinyl-substituted 2-pyrrolidones in good yields with remarkably high levels of chemo-, regio- and enantioselectivities (90–99 % ee). The utility of this strategy was demonstrated in the enantioselective synthesis of the antiepileptic
镍催化的氟烷基取代的 1,6-烯炔与硼酸的不对称环化是通过 C(sp 3 )-F 键激活触发的,这提供了一种以良好的收率和显着地获得 4-氟乙烯基取代的 2-吡咯烷酮的便利途径高水平的化学选择性、区域选择性和对映选择性 (90–99 % ee)。该策略的实用性在抗癫痫药物 Seletracetam 的对映体选择性合成中得到了证明。