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- W2915706887 abstract "5-Amino-3-phenylpyrazole (1) reacted with enaminonitriles 2a–c to afford the pyrazolopyrimidines 5a, b and the 5-substituted aminopyrazole 8. 5a reacted with arenediazonium chlorides and benzaldehyde to give 6 and 7 respectively. Also, o-hydroxyacetophenone afforded the fused pyrazole derivative 9 on treatment with 1. Enaminonitrile 3 coupled with 11 and arenediazonium chlorides to give 12 and 13 respectively. Cyclization of 13a, b afforded the pyrazolotriazines 15a, b." @default.
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- W2915706887 date "1991-01-01" @default.
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- W2915706887 title "Nitriles in heterocyclic synthesis: Synthesis of pyrazolo[1, 5-a] pyrimidine, pyrazolo[1, 5-c][1, 2, 4]triazine and pyrazolo[4, 3-e][1, 2, 4]triazine derivatives" @default.
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- W2915706887 doi "https://doi.org/10.1002/prac.19913330220" @default.
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