Journal
CATALYSIS COMMUNICATIONS
Volume 66, Issue -, Pages 83-86Publisher
ELSEVIER
DOI: 10.1016/j.catcom.2015.03.023
Keywords
Copper-catalyzed; Thiolation; Imidazo[1,2-a]pyridines; (Hetero)aryl thiols; Molecular oxygen
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A new and facile copper-catalyzed thiolation of imidazo[1,2-a]pyridines with (hetero)aryl thiols was developed for the formation of C-S bond by using molecular oxygen as oxidant under base-free conditions. The presented protocol has provided the selective C-3 sulfenated products with good yield. A computational study was carried out by using the B3LYP density functional theory to elucidate the regioselectivity of C-2 and C-3. Calculation results indicated that the thiolation toward C-3 was easier and smoother, which was consistent with our experiment results. (C) 2015 Elsevier B.V. All rights reserved.
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