Efficient synthesis of 2-arylindoles, 2-arylimidazo[1,2-a]pyridines and 2-arylquinoxalines, and their bis-derivatives using [Hmim]OTf ionic liquid supported on nano-silica as a reusable catalyst
作者:Mohammad Soltani、Iraj Mohammadpoor-Baltork、Ahmad R. Khosropour、Majid Moghadam、Shahram Tangestaninejad、Valiollah Mirkhani
DOI:10.1007/s13738-015-0603-2
日期:2015.8
AbstractAn efficient and facile method for the synthesis of 2-arylindoles, 2-arylimidazo[1,2-a]pyridines and 2-arylquinoxalines by the reaction of various α-bromo ketones with anilines, 2-aminopyridine and 1,2-phenylenediamine, respectively, in the presence of N-methylimidazolium trifluoromethanesulfonate ionic liquid supported on nano-silica ([Hmim]OTf@nano-SiO2) as a reusable catalyst under solvent-free
摘要通过各种α-溴代酮与苯胺,2-氨基吡啶和1,2-苯二胺的反应,合成2-芳基吲哚,2-芳基咪唑并[1,2- a ]吡啶和2-芳基喹喔啉的一种高效简便的方法,分别在无溶剂条件下,在可重复使用的催化剂上,负载在纳米二氧化硅上的N-甲基咪唑三氟甲磺酸盐离子液体([Hmim] OTf @ nano-SiO 2)存在。这些化合物的双衍生物也首次使用该催化体系得到了有效的制备。所有产物均以高收率和短反应时间获得。 图形概要