Studies with polyfunctionally substituted heteroaromatics: The reaction of heterocyclic enaminonitriles with α-β-unsaturated nitrites

Article abstract of DOI:10.1002/jccs.200000045

5-Amino-4-cyano-3-phenylpyrazole (1) reacts with cinnamonitriles (2) to yield the pyrazolo[1,5-a]pyrimidines (3). Also, 5-amino-4-cyano-l-phenylpyrazole (4) reacts with cinnamonitriles (2) to yield the pyrazolo[3,4-6]pyridine derivatives (5). In contrast