Affiliation:
1. Institut für Organische Chemie der Technischen Universität Berlin
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.
Cited by
9 articles.
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