Photoinduced Divergent Alkylation/Acylation of Pyridine <i>N</i>-Oxides with Alkynes under Anaerobic and Aerobic Conditions
作者:Jin-hui Xu、Wen-bin Wu、Jie Wu
DOI:10.1021/acs.orglett.9b01940
日期:2019.7.5
Ortho-alkylated and ortho-acylated pyridines have been conveniently synthesized from pyridine N-oxides and alkynes under visible-light-mediation in a metal-free manner. The alkynes served as both alkylating and acylating agents via switching between anaerobic and aerobic conditions. The overall strategy accommodates a broad scope of substituted pyridine N-oxides and alkynes, with excellent regioselectivity