Direct fusion of a triazine to a pyrazine ring. Synthesis of derivatives of [1,2,4]triazino[5,6-b]quinoxaline
✍ Scribed by V. N. Charushin; V. G. Baklykov; O. N. Chupakhin; L. M. Naumova
- Book ID
- 112349028
- Publisher
- Springer US
- Year
- 1984
- Tongue
- English
- Weight
- 166 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0009-3122
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📜 SIMILAR VOLUMES
## Abstract By coupling of diazonium salts with ethyl __N__‐(4‐oxo‐1,4‐dihydroquinolin‐2‐yl)carbamate **4**, the corresponding 3‐arylazocompounds **5** were obtained. These ones were cyclized thermally or in alkaline medium to the corresponding 2‐aryl‐2,3,5,10‐tetrahydro‐[1,2,4]triazino[5,6‐__b__]q
## Abstract The reaction of 6‐chloro‐2‐(1‐methylhydrazino)quinoxaline 4‐oxide 5 with a 2‐fold molar amount of ethyl chloroglyoxalate gave ethyl 8‐chloro‐4‐methyl‐4__H__‐1,3,4‐oxadiazino[5,6‐__b__]quinoxaline‐2‐carboxylate 6, whose reaction with hydrazine hydrate afforded the C~2~‐hydrazinocarbonyl