89607-03-4Relevant articles and documents
CYCLIZATION OF N-ALKYLAZINIUM CATIONS WITH BINUCLEOPHILES. 8. ANNELATION OF THE IMIDAZOLE RING WITH PYRAZINES AND QUINOXALINES
Charushin, V. N.,Baklynov, V. G.,Chupakhin, O. N.,Vereshchagina, N. N.,Naumova, L. M.,Sorokin, N. N.
, p. 1333 - 1338 (2007/10/02)
Monosubstituted and N, N'-disubstituted thioureas enter into cyclization with pyrazinium and quinoxalinium ion to form imidazo-annelated pyrazines and quinoxalines.