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Název: | Pyran-2-ones as synthons for pyridazine-3-carboxylic derivatives. Oxidation of nitrogen-rich compounds | ||||||||||
Autor: | Požgan, F.; Kafka, Stanislav; Polanc, S.; Kočevar, M. | ||||||||||
Typ dokumentu: | Recenzovaný odborný článek (English) | ||||||||||
Zdrojový dok.: | Heterocycles. 2006, vol. 70, issue 1, p. 235-248 | ||||||||||
ISSN: | 0385-5414 (Sherpa/RoMEO, JCR) | ||||||||||
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DOI: | https://doi.org/10.3987/COM-06-S(W)11 | ||||||||||
Abstrakt: | The reaction of 3-amino-6-(pyridin-2-yl)-2H-pyran-2-one with N2H4.H2O towards pyridazine derivs. was investigated. To elucidate the reaction pathway, an intermediary-formed ?,?-dihydrazono hydrazide was successfully isolated. Oxidns. of the above compds. as well as of other pyridazine derivs. contg. a carbohydrazido group, using cerium(IV) ammonium nitrate (CAN), thallium(III) nitrate trihydrate (TTN), or copper(II) acetate hydrate (CuDA), are also presented. | ||||||||||
Plný text: | http://www.heterocycles.jp/library/abstract.php?doi=02307 | ||||||||||
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