Behavior of 5,6-dihydrobenzo[h]cinnolinones towards hydrazine. Synthesis of benzo[h]cinnolinones and of 4-aminobenzo[h]cinnolinones

Stefania Villa, Giacomo Luca Evoli, Giorgio Cignarella, Michela M. Curzu, Gérard A. Pinna

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Dehydrogenation and amination of 4,4a,5,6-tetrahydro and 5,6- dihydrobenzocinnolinones in refluxing hydrazine hydrate to give new benzo[h]cinnolinones and 4-aminobenzo[h]cinnolinones are reported, and reaction mechanisms proposed. Experiments were also extended to 4,4a-dihydro- 5H-indenopyridazinone which underwent hydrazine induced dehydrogenation to 5H-indenopyridazin-3-one but not subsequent amination.

Original languageEnglish
Pages (from-to)485-492
Number of pages8
JournalJournal of Heterocyclic Chemistry
Volume36
Issue number2
Publication statusPublished - 1999

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hydrazine
Amination
Dehydrogenation
Experiments

ASJC Scopus subject areas

  • Organic Chemistry

Cite this

Behavior of 5,6-dihydrobenzo[h]cinnolinones towards hydrazine. Synthesis of benzo[h]cinnolinones and of 4-aminobenzo[h]cinnolinones. / Villa, Stefania; Evoli, Giacomo Luca; Cignarella, Giorgio; Curzu, Michela M.; Pinna, Gérard A.

In: Journal of Heterocyclic Chemistry, Vol. 36, No. 2, 1999, p. 485-492.

Research output: Contribution to journalArticle

Villa, Stefania ; Evoli, Giacomo Luca ; Cignarella, Giorgio ; Curzu, Michela M. ; Pinna, Gérard A. / Behavior of 5,6-dihydrobenzo[h]cinnolinones towards hydrazine. Synthesis of benzo[h]cinnolinones and of 4-aminobenzo[h]cinnolinones. In: Journal of Heterocyclic Chemistry. 1999 ; Vol. 36, No. 2. pp. 485-492.
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AU - Curzu, Michela M.

AU - Pinna, Gérard A.

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