Ring — chain tautomerism and reactions of 4-aryl-4-hydroxy-2,3-dimethyl-3,4-dihydrophthalazinones

Autor: Valter, R. É., Batse, A. É., Valter, S. P.
Zdroj: Chemistry of Heterocyclic Compounds; August 1973, Vol. 9 Issue: 8 p1038-1040, 3p
Abstrakt: It has been established by IR spectroscopy that the N,N'-dimethylhydrazides of 2-aroylbenzoic and benzil-o-carboxylic acids, with the exception of 2-mesitoylbenzoic acid, have the ring structure of 4-aryl- or 4-benzoyl-4-hydroxy-2,3-dimethyl-3,4-dihydrophthalazinones. The action of electrophilic agents on 4-hydroxy-2,3-dimethyl-4-phenyl-3,4-dihydrophthal-azinone under mild conditions leads to N(3)-demethylation with the formation of 2-methyl-4-phenylphthalazinone.
Databáze: Supplemental Index
Externí odkaz: