A convenient synthesis of novel pyridazino[3,4-b]quinoxaline and pyrazolo[3,4-b]quinoxaline utilizing 1,3-dipolar cycloaddition reaction
β Scribed by Ho Sik Kim; Yoshihisa Kurasawa; Atsushi Takada
- Book ID
- 112129404
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1989
- Tongue
- English
- Weight
- 129 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0022-152X
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π SIMILAR VOLUMES
## Abstract The pyridazino[3,4β__b__]quinoxaline 12 was synthesized by the cyclization of the Ξ±βarylhydrazonoacylβhydrazide 11. The reaction of compound 12 with phosphoryl chloride gave pyridazino[3,4β__b__]quinoxaline 13, whose reactions with sodium azide or cyclic secondary amines provided pyrida
## Abstract Dedicated to Professor Gerhard Kempter on the occasion of his 70^th^ birthday Quinoxalineβ2βaldoximes and βketoximes (**6**) react with hydrazine, alkylhydrazines or arylhydrazines under acidic conditions to afford l__H__βpyrazolo[3,4β__b__]quinoxalines (flavazoles) (**1**). Since the o