title: A new and facile synthetic approach to substituted 2-thioxoquinazolin-4-ones by the annulation of a pyrimidine derivative.
abstract: A new and facile synthesis of 2-thioxoquinazolin-4-ones by introducing a benzenoid system in the pyrimidine moiety by reacting ethoxymethylene derivatives of 1,3-diarylthiobarbituric acids (DTBA) with active methylene compounds, such as malononitrile and ethyl cyanoacetate, in presence of ZnCl₂ has been developed.
authors.affiliation: Department of Chemistry, Manipur University, Canchipur 795 003, Manipur, India. nima_moirangthem@rediffmail.com
authors.forename: Nimalini Devi
authors.initials: ND
authors.lastname: Moirangthem
authors.forename: Warjeet Singh
authors.initials: WS
authors.lastname: Laitonjam