TETRAHYDRO-1,2,3,4 PYRIMIDINES ET OCTAHYDRO-1,2,3,4,5,6,7,8 QUINAZOLINES DITHIONES-2,4 ET DIONES-2,4 SYNTHESE ET ETUDE DU MECANISME

Article abstract of DOI:10.1016/S0040-4020(01)88901-8

A synthesis of tetrahydropyrimidine-dithiones and octahydroquinazoline-dithiones has been realized by direct action, in basic media, of alkyl or aryl isothiocyanates on ketones possessing at least an hydrogen atom in an α-position.The clarification of the complex mechanism of this reaction has been attempted.It is possible to reach corresponding diones by desulphurization of the dithiones.