Cyclization of N-alkylazinium cations with binucleophiles. 8. Annellation of the imidazole ring with pyrazines and quinoxalines |
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| Authors: | V. N. Charushin V. G. Baklykov O. N. Chupakhin N. N. Vereshchagina L. M. Naumova N. N. Sorokin |
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| Affiliation: | 1. S. M. Kirov Ural Polytechnic Institute, 620002, Sverdlovsk
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| Abstract: | Monosubstituted and N,N′-disubstituted thioureas enter into cyclization with pyrazinium and quinoxalinium ion to form imidazo[4,5-b]-annellated pyrazines and quinoxalines. |
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