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Synthesis of novel pyridazino[3,4-b]quinoxalines

✍ Scribed by Ho Sik Kim; Eun Kyoung Kim; Sung Sik Kim; Yong Tae Park; Young Seuk Hong; Yoshihisa Kurasawa

Publisher: Journal of Heterocyclic Chemistry
Year: 1997
Tongue: English
Weight: 225 KB
Volume: 34
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570340107

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✦ Synopsis

Abstract

The pyridazino[3,4‐b]quinoxaline 12 was synthesized by the cyclization of the α‐arylhydrazonoacyl‐hydrazide 11. The reaction of compound 12 with phosphoryl chloride gave pyridazino[3,4‐b]quinoxaline 13, whose reactions with sodium azide or cyclic secondary amines provided pyridazino[3,4‐b]quinoxalines 14,17 and 18, respectively. The acylhydrazide 15 was also cyclized to pyridazino[3,4‐b]quinoxaline 16.

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## Abstract For Abstract see ChemInform Abstract in Full Text.