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Cyclization of N-alkyl azinium cations with bifunctional nucleophiles. 21. Regioisomeric 1,3,4-thiadiazino[5,6-b]quinoxalines

โœ Scribed by V. G. Baklykov; V. N. Charushin; O. N. Chupakhin; V. N. Drozd


Book ID
112369320
Publisher
Springer US
Year
1987
Tongue
English
Weight
376 KB
Volume
23
Category
Article
ISSN
0009-3122

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Cyclizations of N-alkyl-substituted azin
โœ G. M. Petrova; M. G. Ponizovskii; V. N. Charushin; G. G. Aleksandrov; E. O. Sido ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Springer US ๐ŸŒ English โš– 617 KB

In reactions with quinoxalinium salts in alcoholic-base media indan-l,3-dione acts as a C nucleophile, adding at the 2 or 3 position of the heterocycle to give the corresponding ylidene derivatives; attack by the nucleophile at the C(a) atom (the # position relative to the quaternary nitrogen atom)