A computationally designed titanium-mediated amination of allylic alcohols for the synthesis of secondary allylamines
作者:Zunming Sun、Qingxia Wang、Yi Xu、Zhihong Wang
DOI:10.1039/c5ra18503c
日期:——
A computational design was inspired by previous mechanistic studies and the DFT-guided reactions were implemented in the synthesis of secondary allylamines. The participation of titanium imido intermediates facilitated the reaction and the closed transition states in the bond-forming steps rendered exclusive SN2′ substitution products.
以前的机理研究启发了计算设计,并且在仲烯丙胺的合成中实施了DFT指导的反应。钛亚氨基中间体的参与促进了反应,并且在键形成步骤中的闭合过渡态提供了唯一的S N 2'取代产物。
Direct C–H/N–H dehydrogenative coupling is a promising yet thermodynamically unfavorable transformation in the absence of a sacrificial hydrogen acceptor. Herein, a conceptually novel oxidant-free dehydrogenative amination of alkenes through a synergistic photoredox and cobaltcatalysis with H2 evolution has been achieved. With this approach, a wide range of five-membered N-heterocycles were synthesized