Copper-Catalyzed Remote C(sp<sup>3</sup>)–H Amination of Carboxamides
作者:Qing-Qiang Min、Jia-Wen Yang、Meng-Juan Pang、Gui-Zhen Ao、Feng Liu
DOI:10.1021/acs.orglett.0c00829
日期:2020.4.3
Here we report a method for the site-selective intermolecular C(sp3)–H amination of carboxamides by merging transition-metal catalysis and the hydrogen atom transfer strategy. The reaction proceeds through a sequence of favorable single-electron transfer, 1,5-hydrogen atom transfer, and C–N cross-coupling steps, thus allowing access to a series of desired products. This reaction could accommodate a
The catalyticC(sp3)-H functionalization is highly desirable yet challenging in organic synthesis. Incorporation of the SP(O)(OR)2 group through C(sp3)-H functionalization remains unexplored. We herein report an unprecedented protocol for phosphorothiolation of primary and secondary C(sp3)-H via a multicomponent reaction with N-fluoro-substituted amides, elemental sulfur, and P(O)H compounds involving