The present invention relates to a process for preparing substituted piperidine compounds and especially chiral substituted piperidine compounds. The process involves reacting a substituted pyridinium ion with an amine as defined herein, in the presence of a hydrogen donor, a catalysts and a suitable solvent.
US9981957B2
申请人:——
公开号:US9981957B2
公开(公告)日:2018-05-29
Visible-light photo-catalytic C–C bond cleavages: preparations of N,N-dialkylformamides from 1,2-vicinal diamines
作者:Yaohong Zhao、Shunyou Cai、Jing Li、David Zhigang Wang
DOI:10.1016/j.tet.2013.07.056
日期:2013.9
A range of 1,2-vicinal diamines were smoothly converted into N,N-dialkylformamides under the synergistic actions of Ru(bpy)3Cl2 photo-catalyst, 45 W household lighting bulb, and Cs2CO3 basic additive under very mild reaction conditions. The process involves visible light-enabled photo-catalytic cleavage of C–C bond as the strategic event.
在非常温和的条件下,Ru(bpy)3 Cl 2光催化剂,45 W家用电灯泡和Cs 2 CO 3碱性添加剂的协同作用下,将一系列1,2-邻位二胺顺利转化为N,N-二烷基甲酰胺反应条件。该过程涉及可见光激活的C–C键的光催化裂解,这是战略性事件。