Copper-catalyzed regioselective C-3 sulfenylation of imidazo[1,2-a]pyridines using p-tosylchloride as a benign source of sulfenylating agents has been developed. On the other hand, p-tosylchloride mediated thiomethylation of imidazo[1,2-a]pyridines with dimethylsulfoxide as a source of thiomethylation under metal-free conditions was also described.
![Graphical abstract: Dual role of p-tosylchloride: copper-catalyzed sulfenylation and metal free methylthiolation of imidazo[1,2-a]pyridines](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C5OB02475G&imageInfo.ImageIdentifier.Year=2016)
C. Ravi, D. Chandra Mohan and S. Adimurthy, Org. Biomol. Chem., 2016, 14, 2282 DOI: 10.1039/C5OB02475G
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