Graphite catalyzed green synthesis of quinoxalines
作者:Hari K. Kadam、Salman Khan、Rupesh A. Kunkalkar、Santosh G. Tilve
DOI:10.1016/j.tetlet.2012.12.041
日期:2013.2
A new simple approach using environmentally benign, cheap, and easily recyclable graphite as a heterogeneous catalyst for the synthesis of quinoxalines is described. A library of pharmacologically interesting diphenylquinoxalines is prepared by the double condensation of substituted benzils, phenanthrene-9,10-dione, and benzoin with aromatic diamines in 71–93% yields at room temperature in ethanol