Chemistry of Heterocyclic Compounds p. 1333 - 1338 (1983)
Update date:2022-08-04
Topics:
Charushin, V. N.
Baklynov, V. G.
Chupakhin, O. N.
Vereshchagina, N. N.
Naumova, L. M.
Sorokin, N. N.
Monosubstituted and N, N'-disubstituted thioureas enter into cyclization with pyrazinium and quinoxalinium ion to form imidazo<4,5-b>-annelated pyrazines and quinoxalines.
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