Versatile Pyrrole Synthesis through Ruthenium(II)-Catalyzed Alkene C–H Bond Functionalization on Enamines
作者:Lianhui Wang、Lutz Ackermann
DOI:10.1021/ol303224e
日期:2013.1.4
An efficient ruthenium(II) catalyst enabled broadly applicable oxidative alkyne annulations with electron-rich enamines to provide diversely decorated pyrroles, even in an aerobic fashion with air as the ideal oxidant.
Preparation of substituted pyrroles via Ru(II)-catalyzed coupling of alkynes with enamides
作者:Kaliyappan Murugan、Shiuh-Tzung Liu
DOI:10.1016/j.tetlet.2013.03.013
日期:2013.5
An efficient ruthenium-catalyzed oxidative cyclization of enamides with alkynes in water or dimethoxyethane leading to the pyrrole derivatives is reported. Typically, a mixture of ethyl 2-(acetylamino)acrylate, diphenylacetylene, [Ru(p-cymene)Cl2] (2 mol %), KPF6, and Cu(OAc)2 in water was heated under refluxing conditions providing the N-acetylated pyrrole product in 95% yield.