CONVERSION OF α-HALOESTERS AND ALKYNES INTO CORRESPONDING CINNAMATES AND KETONES DERIVATIVES RESPECTIVELY BY USING SOME ORGANOTELLURIUM COMPOUNDS AS REAGENTS

Telluroxidation of di-n-propyl telluride 1 guides to obtain trans - cinnamate derivatives from condensation of substituted aldehydes and α-haloesters in one - pot reaction. p-Diphenetyl tellurinic acid anhydride 3 converts terminal alkynes into corresponding ketones through hydration process to oxidize triplet bond into carbonyl group. Infrared spectra have assisted all organochemical conversions and their identification strongly. The possible reactions mechanisms were proposed.