کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
49718 | 46763 | 2015 | 4 صفحه PDF | دانلود رایگان |
• Cu-catalyzed cross-coupling of imidazo[1,2-a]pyridines with thiols
• The selective C-3 sulfenated products were formed using molecular oxygen as oxidant.
• An efficient method for the formation of C–S bond to synthize imidazo[1,2-a]pyridines
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.
Journal: Catalysis Communications - Volume 66, 5 June 2015, Pages 83–86