Abstract
Nitrilotris(methylenephosphonic acid) has been introduced as a novel organocatalyst for the preparation of quinoxalines. It can efficiently catalyze the synthesis of quinoxaline derivatives from 1,2-diamines and 1,2-diketones under mild, efficient, and eco-friendly conditions. Excellent yields, very short reaction times, safety, and recyclability of the catalyst system are other features of the proposed method.