Iodine-mediated synthesis of 3-sulfenylimidazo[1,5-a]pyridines via C–H functionalization has been achieved using dithioesters, 2-methylaminopyridines and sulfonyl hydrazides. A library of 3-sulfanylimidazopyridines and imidazopyridines with broad functionalities are synthesized under metal-free reaction conditions.
![Graphical abstract: Tandem approach for the synthesis of 3-sulfenylimidazo[1,5-a]pyridines from dithioesters](http://hg.y866.cn/compound/lib/scimg/usr/1/C6RA03771B.jpg)
