Synthesen mit Nitrilen, LXV [1]. Pyrazolo [3,4-b] pyridine und Polymethine aus Benzoylacetonitril-hydrazonen und Tetracyanethylen / Syntheses with Nitriles, LXV [1]. Pyrazolo[3,4-b]pyridines and Polymethines from Benzoylacetonitrile-hydrazones and Tetracyanoethylene
Open Access
- 1 October 1982
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 37 (10) , 1327-1331
- https://doi.org/10.1515/znb-1982-1020
Abstract
Condensation of benzoylacetonitrile (1a) and benziminoacetonitriles (1b, c), resp., with tho hydrazines 2a-f leads to benzoylacetonitrile-hydrazones (3a-i), which react with tetracyanoethylene to give pyrazolo[3,4-b]pyridines (6a-d) and polymethines (7a, b, 8), resp.Keywords
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