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Synthesis of pyridazino[3,4-b]quinoxalines and pyrazolo[3,4-b]-quinoxaline by 1,3-dipolar cycloaddition reaction

✍ Scribed by Ho Sik Kim; Yoshihisa Kurasawa; Chiemi Yoshii; Minako Masuyama; Atsushi Takada; Yoshihisa Okamoto


Book ID
112129663
Publisher
Journal of Heterocyclic Chemistry
Year
1990
Tongue
English
Weight
223 KB
Volume
27
Category
Article
ISSN
0022-152X

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Synthesis of novel pyridazino[3,4-b]quin
✍ Ho Sik Kim; Eun Kyoung Kim; Sung Sik Kim; Yong Tae Park; Young Seuk Hong; Yoshih πŸ“‚ Article πŸ“… 1997 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 225 KB

## 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 pyrida