Journal
JOURNAL OF HETEROCYCLIC CHEMISTRY
Volume 47, Issue 3, Pages 629-633Publisher
WILEY-BLACKWELL
DOI: 10.1002/jhet.370
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Funding
- RFBR [06-03-32388]
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Reactions of 3-cyanochromones with phenylhydrazine gave the corresponding 5-amino-4-salicyloyl-1-phenylpyrazoles, 2-aminochromone-3-carbaldehyde N-phenylhydrazones, and 1-phenylchromeno[4,3-c]pyrazol-4(1H)-one, depending on the reaction conditions. With methylhydrazine, 3-(2-hydroxyaryl)-1-methylpyrazole-4-carbonitriles and 2-methylchromeno[4,3-c]pyrazol-4(2H)-ones were obtained in moderate to high yields.
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