Phenylselenotris(trimethylsilyl)silane and phenyltellurotris(trimethylsilyl)silane: versatile reagents for the preparation of phenylseleno- and phenyltelluro-formates
efficient reagent for the reductivecleavage of the tellurium-tellurium bond of ditelluride. Alkyl phenyl tellurides were prepared by the reaction of diphenyl ditelluride with primary and secondary alkyl halides in the presence of lanthanum metal and a catalytic amount of iodine in moderate to good yields. The reaction was accelerated by the addition of HMPA. In addition, the reduction of ditelluride with
of cerium trichloride and samarium intetrahydrofuran to produce the aryltellurolates. This “living” tellurolate anion species reacted smoothly with acid chlorides and acid anhydrides to afford telluroesters in good yields under mild and neutral conditions.