new route for the synthesis of some quinazoline derivatives

S-methyl monothiomalonanilide hydroiodide 1 is a versatile compound for synthesizing the aimed quinazoline derivatives. Thus, compound 1 reacted with either anthranilic acid or ethyl anthranilate hydrochloride to yield 2. Also, polysubstituted pyranylquinazolinone was obtained by the reaction of quinazolin derivative 6 with p-chloro- alpha-cyano-cinnamonitrile 9. Chemical and spectroscopic evidences for the structures of the newly synthesized compounds were described