Pyrazolones and quinoxalines from 4‐phenyl‐2,3‐dioxobutyro‐1,4‐lactone
4‐Phenyl‐2,3‐dioxobutyro‐1,4‐lactone (1) gave with phenylhydrazine and ils p‐Cl, p‐Br, p‐I and p‐NO2 derivatives, bishydrazones which were eyclized to 1‐aryl‐3‐(α‐hydroxybenzyl)‐4,5‐dione‐4‐arylhydrazones. With o‐phenylene diamine, compound 1 gave either a Schiff base or a substituted quinoxaline, depending upon the ratio of the reactants. Copyright © 1977 Journal of Heterocyclic Chemistry
Journal of Heterocyclic Chemistry
El Khadem, H.,
Pyrazolones and quinoxalines from 4‐phenyl‐2,3‐dioxobutyro‐1,4‐lactone.
Journal of Heterocyclic Chemistry,
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