Highly Regioselective C–N Bond Formation through C–H Azolation of Indoles Promoted by Iodine in Aqueous Media
摘要:
An efficient and metal-free method for the direct C-N coupling of indoles with azoles to produce 2-(azol-1-yl)indoles in aqueous solution has been developed. This reaction proceeded highly regioselectively to provide a variety of indole derivatives with good to excellent yields.
A highly efficient iodine-catalyzed regioselective oxidative cross-coupling of an indole C-H bond and azole N-H bond is described. This metal-free reaction can be easily carried out at room temperature under mild and environmentally friendly conditions and provides a series of N-linked 2-(azol-1-yl)indole derivatives in moderate to excellence yields.