Enhydrazine, XVIII Einige weitere Indazol-Derivate / Enhydrazines, XVIII1 Further Indazol Derivatives
Open Access
- 1 September 1977
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 32 (9) , 1072-1076
- https://doi.org/10.1515/znb-1977-0921
Abstract
3-(3,4-Dimethoxyphenyl)-1-methyl-1,5,6,7-tetrahydro-4H-indazol-4-one (1) is reduced to 2 a. Dehydration of 2 a gives 3 which is hydrogenated to 4 or dehydrogenated to 5. Regiospecific bromination of 1 gives the bromoketones 6 or 7, the latter is transformed into the phenol 11 a or into the indazoloquinone 13 which is brominated to 14 and converted into the aminoquinone 15.Keywords
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