V. A. Potapov

Preparative synthesis of divinyl ditelluride

The only known method for the production of divinyl ditelluride (I) with a 67% yield is based on the reaction of the intermediate CH/sub 2/=CHTeMgBr with water during oxidation by air. The authors have proposed a preparative method for the synthesis of the ditelluride (I) with a yield of 70% by the reaction of divinyl telluride with metallic sodium in liquid ammonia, followed by treatment with water in air. The formation of the ditelluride (I) evidently results from oxidation of the vinyltelluride anions, formed under the conditions of the decomposition of divinyltelluride, by atmospheric oxygen.

Synthesis of cis,cis-Di(2-(Vinylseleno)vinyl) Sulfide.

Treatment of the sulfides (I) or (IV) with sodium vinyl selenide, generated in liquid ammonia from divinyl selenide (II) and NaNH2, affords the title compound (III).