Acylation of 2-aminothiobenzamide or 2-methylaminothiobenzamide with substituted benzoyl chlorides has been used to synthesise the corresponding 2-benzoyl-aminothiobenzamides whose subsequent sodium methoxide-catalysed ringclosure gives the corresponding quinazoline-4-thiones. These compounds were characterised by means of their 1H- and 13C-NMR spectra. The preferred tautomeric form of selected compounds
Cyclization of 2-benzoylamino-<i>N</i>-methyl-thiobenzamides to 3-methyl-2-phenylquinazolin-4-thiones
作者:Jiří Hanusek、Pavel Drabina、MiloŠ Sedlák、Pavel Rosa
DOI:10.1002/jhet.5570430521
日期:2006.9
methoxide-catalyzed ring closure gives the corresponding 3-methyl-2-phenylquinazoline-4-thiones. These compounds were characterized by means of their 1H- and 12C-NMR spectra. The kinetics of the cyclization reaction has been followed with UV-VIS spectroscopy at 100 °C in methanolic solutions of sodium methoxide.