N-(Pyrazol-5-yl)cyanoacetamide in heterocyclic synthesis: synthesis of novel N-(pyrazol-5-yl)pyridine-3,5-dicarbonitrile, pyrazolo[1,5-a]pyrido[3,2-e]pyrimidine-7-carbonitrile and pyrazolo[4,3-e]pyrido[1,2-a]pyrimidine-6,8-dicarbonitrile moieties
ARKIVOC