Aaa. Alnajjar et al., STUDIES WITH POLYFUNCTIONALLY SUBSTITUTED HETEROAROMATICS - A ROUTE FOR THE SYNTHESIS OF SUBSTITUTED [1,2,4]TRAIZOLO[1,5-A]PYRIDINES, Journal of chemical research. Synopses, (6), 1996, pp. 296-297
N-Arylmethylidene-2-cyanoacetohydrazides react with arylmethylidenemal
onitriles to afford [1,2,4]triazolo[1,5-a]pyridinones, and with both m
alononitrile and ethyl cyanoacetate to afford N-aminopyridinones.