New synthesis of ethyl 6-amino-4-aryl-5-cyano-1,4-dihydropyrano[2,3-c]pyrazole-3-carboxylates |
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| Authors: | V. L. Gein T. M. Zamaraeva I. V. Kozulina |
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| Affiliation: | 1. Perm State Pharmaceutical Academy, Polevaya ul. 2, Perm, 614000, Russia
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| Abstract: | Ethyl 6-amino-4-aryl-5-cyano-1,4-dihydropyrano[2,3-c]pyrazol-3-carboxylates were synthesized by a reaction of diethyloxalacetate sodium salt with aromatic aldehyde, hydrazine hydrate, and malononitrile in the presence of acetic acid. |
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