1310492-93-3Relevant articles and documents
Regioselective, Solvent- and Metal-Free Chalcogenation of Imidazo[1,2-a]pyridines by Employing I2/DMSO as the Catalytic Oxidation System
Rafique, Jamal,Saba, Sumbal,Rosário, Alisson R.,Braga, Antonio L.
, p. 11854 - 11862 (2016)
Highly efficient molecular-iodine-catalyzed chalcogenations (S and Se) of imidazo[1,2-a]pyridines were achieved by using diorganoyl dichalcogenides under solvent-free conditions. This approach afforded the desired products that had been chalcogenated regioselectively at the C3 position in up to 96 % yield by using DMSO as an oxidant, in the absence of a metal catalyst, and under an inert atmosphere. This mild, green approach allowed the preparation of different types of chalcogenated imidazo[1,2-a]pyridines with structural diversity. Furthermore, the current protocol was also extended to other N-heterocyclic cores.
Metal-free regioselective C-H chalcogenylation of coumarins/(hetero)arenes at ambient temperature
Song, Zengqiang,Ding, Chaochao,Wang, Shaoli,Dai, Qian,Sheng, Yaoguang,Zheng, Zhilong,Liang, Guang
supporting information, p. 1847 - 1850 (2020/02/22)
A novel, practical and metal-free approach for the regioselective selenation of coumarins employing (bis(trifluoroacetoxy)iodo)benzene (PIFA) at room temperature is presented. The developed method is suitable for a wide substrate scope and affords 3-selen
NIS/TBHP Induced Regioselective Selenation of (Hetero)Arenes via Direct C?H Functionalization
Ding, Chaochao,Yu, Yuanzu,Yu, Qiongli,Xie, Zixin,Zhou, Yan,Zhou, Jianmin,Liang, Guang,Song, Zengqiang
, p. 5397 - 5401 (2018/11/23)
A simple and efficient method for the regioselective selenation of (hetero)arenes via direct C?H functionalization has been established using NIS and TBHP. The present protocol is compatible with different functional groups, and suitable for various (hete
