
Monatshefte fur Chemie p. 431 - 436 (1984)
Update date:2022-08-03
Topics:
Zayed, Ezzat Mohamed
Ghozlan, Said Ahmed Soliman
Ibrahim, Abdel-Azim Hady
5-Amino-4-cyano-3-phenylpyrazole (1) reacts with acrylonitrile or ethyl acrylate to yield 4-cyano-3-phenyl-4,5,6,7-tetrahydro-5-oxopyrazolo-<1,5-a>-pyrimidine (2).With urea, thiourea and ethyl acetoacetate 1 gives the pyrazolopyrimidine derivatives 6a, 6b
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