Visible Light-Induced Thiocyanation of Enaminone C–H Bond to Access Polyfunctionalized Alkenes and Thiocyano Chromones
作者:Yong Gao、Yunyun Liu、Jie-Ping Wan
DOI:10.1021/acs.joc.8b02981
日期:2019.2.15
The visible light induced C–H bond thiocyanation on the α-site of tertiary enaminones has been realized under metal-free, photocatalytic conditions in the presence of Rose Bengal, which enables the synthesis of thiocyanated alkene derivatives and chromones using NH4SCN as the thiocyano source under an aerobic atmosphere. In addition, employing Ru(bpy)3Cl2·6H2O as the photocatalyst switches the reaction
在无金属的光催化条件下,在玫瑰红存在下,在叔烯胺酮的α位上可见光诱导的C–H键硫氰化反应得以实现,该条件使得能够使用NH 4 SCN合成硫氰酸化的烯烃衍生物和色酮。有氧气氛下的硫氰源。此外,采用Ru(bpy)3 Cl 2 ·6H 2 O作为光催化剂,可通过由C–H键硫氰化和乙烯基C–N键转氨作用组成的双官能化过程切换反应路径,从而提供NH 2-官能化的硫氰化烯胺。