Reaction of 4,5-diamino-3-methyl-1-phenylpyrazole with 3-dimethylaminopropiophenones. Synthesis of new 4-aryl-6-methyl-8-phenyl-2,3-dihydropyrazolo[3,4-b]diazepines and 4-aryl-8-methyl-6-phenyl-2,3-dihydropyrazolo[4,3-b]diazepines |
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| Authors: | Braulio Insuasty O Henry Insuasty I Jairo Quiroga P Claudio Saitz Carolina Jullian |
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| Abstract: | New 4-Aryl-6-methyl-8-phenyl-2,3-dihydropyrazolo3,4-b]diazepines and 4-aryl-8-methyl-6-phenyl-2,3-dihydropyrazolo4,3-b]diazepines were obtained from the reaction of 4,5-diamino-3-methyl-1-phenylpyrazole 1 with one equivalent of the 3-dimethylaminopropiophenones 2 in absolute ethanol. The structures of 4-aryl-6-methyl-8-phenyl-2,3-dihydropyrazolo3,4-b]diazepines 3 and 4-aryl-8-methyl-6-phenyl-2,3-dihydropyrazolo4,3-b]diazepines 4 were determined by detailed nmr measurements. |
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