Regioselective, Solvent- and Metal-Free Chalcogenation of Imidazo[1,2-a]pyridines by Employing I2/DMSO as the Catalytic Oxidation System
作者： Jamal Rafique , Sumbal Saba , Alisson R. Rosário , Antonio L. Braga
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摘要: … The use of DMSO (3 mL) as the solvent did not provide … DMSO from 5 to 3 molar equivalents, we obtained the product 3 a in 89 % yield (entry 17), whereas a further decrease in DMSO …
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