Polyoxometalate-Supported Aminocatalyst for the Photocatalytic Direct Synthesis of Imines from Alkenes and Amines
作者:Zhuolin Shi、Jie Li、Qiuxia Han、Xiaoyun Shi、Chen Si、Guiqin Niu、Pengtao Ma、Mingxue Li
DOI:10.1021/acs.inorgchem.9b02056
日期:2019.10.7
oxidative coupling of alkenes and amines with O2 under mild conditions is very significant. Herein, ZnW–PYI is well-designed by assembling a [PZnW11O39(H2O)]5– photooxidation catalyst and chiral aminocatalyst pyrrolidine-2-ylimidazole (PYI) via a coordination model. ZnW–PYI efficiently catalyzed the synthesis of imines from alkenes and amines using O2 as the oxidant through nucleophilic catalysis by employing
在温和的条件下开发有效的光催化剂以将烯烃和胺与O 2直接氧化偶联是非常重要的。这里,ZnW-PYI通过组装[PZnW精心设计的11 ø 39(H 2 O)] 5-光氧化经由协调模型催化剂和手性aminocatalyst吡咯烷-2- ylimidazole(PYI)。ZnW–PYI使用O 2有效催化烯烃和胺合成亚胺吡咯烷作为有机催化剂,通过亲核催化作用作为氧化剂。在一个单一的框架内结合多金属氧酸盐和PYI是一种有效的方法,不仅可以稳定和异化氧化还原活性催化剂和氨基催化剂,而且可以实现反应中间体之间的相容性和多个催化循环的协同作用。