Ha. Emam et al., ACTIVATED NITRILES IN HETEROCYCLIC SYNTHESIS - SYNTHESIS OF PYRANO[2,3-D]PYRIMIDINE AND PYRANO[3,2-E][1,2,4]TRIAZOLO[1,5-C]PYRIMIDINE DERIVATIVES, Journal of chemical research. Synopses, (11), 1995, pp. 474-475
Several new pyrazolo[4',3':5,6] pyrano[2,3-d] pyrimidines and pyrazolo
[4',3':5,6] pyrano[3,2-e][1,2,4]triazolo[1,5-c]pyrimidines have been s
ynthesised via the reaction of an enaminonitrile with different reagen
ts.