Studies on the synthesis of heterocyclie compounds. II. Synthesis of 2,2-disubstituted-1,3-benzoxathioles

The condensation of 2-hydroxythiophenol (I) with acetylenic compounds (IIa-g) or halo-genated esters (IV, V, VIa and b) led to the synthesis of 2,2-disubstituted-1,3-benzoxathioles (IIIa-g). The structures of these compounds were established by elemental analysis and by ir and nmr spectra.