Electrochemical direct C-H mono and bis-chalcogenation of indolizine frameworks under oxidant-free conditions

Org Biomol Chem. 2023 Sep 27;21(37):7643-7653. doi: 10.1039/d3ob01109g.

Abstract

Herein, we disclosed a sustainable electrochemical approach for site-selective C-H mono and bis-chalcogenation (sulfenylation or selenylation) of indolizine frameworks. Diversely functionalized disulfides and diselenides possessing EDGs and EWGs were successfully reacted with a variety of indolizines to directly access sulfenylated/selenylated indolizines in 40-96% yields. A mechanistic radical pathway was also validated with control experiments and cyclic voltammogram data.