作者:Shaukat Ali、Jiaqi Huo、Congyang Wang
DOI:10.1021/acs.orglett.9b02554
日期:2019.9.6
Manganese-catalyzed aromatic C-H allylation of ketones is reported. The reaction proceeded in a monoselective allylation manner to provide various ortho C-H allylated ketones in high yields. With challenging allylic electrophiles bearing substituents at the α-, β-, or γ-position, excellent SN2' regioselectivity was achieved under mild conditions (rt to 35 °C). Mechanistic studies revealed a possible
报道了锰催化的酮的芳族CH烯丙基化。反应以单选择烯丙基化方式进行,以高产率提供各种邻位CH烯丙基化酮。通过在α-,β-或γ-位置带有取代基的具有挑战性的烯丙基亲电试剂,在温和条件下(室温至35°C)可获得出色的SN2'区域选择性。机理研究表明,可能的限制营业额的CH键裂解步骤提供了五元Manganacycle,然后与烯丙基亲电试剂反应生成CH烯丙基化产物。