Distyryl telluride

The yields were markedly increased by the addition of a reducing agent such as SnCl2." The reaction of elemental Te, phenylacetylene, KOH in hydrazine hydrate/ water/toluene was performed under three-phase catalytical system (in the presence of AlKjN+MeCr) giving (Z,Z)-distyryl telluride in 50% yield. ... 

Reaction of phenylacetylene with Te/KOH/SnCf A mixtnre of 6.4 g of tellurium, 42 g of potassium hydroxide, 22.6 g of SnCl2 2H20, 10.2 g of phenylacetylene, 20 mL of toluene, 60 mL of water and 1.2 g of Adogen 464 was heated (80-97°C) with vigorous stirring for 7 h. The organic layer was separated, and the aqneons layer was extracted with benzene. The benzene was removed under vacnnm. The residne was dissolved in a small amount of ether, poured into 200 mL of isopropyl alcohol, and placed in the refrigerator for 3 days. The yellow crystals of distyryl telluride (2.5 g, yield 15%) and the red needle crystals of distyryl ditelluride (0.7 g, yield 6%) were separated. 

Reaction of phenylacetylene with Te/K0H/N2HfXH20f (Z,Z)-distyryl telluride. A mixture of Te (12.8 g), phenylacetylene (20.4 g), KOH (84 g), NjH XHjO (120 mL), H2O (24 mL), toluene (40 mL), and AlKjN MeCl (1 g) was heated (100-110°C) with a stirring of 6 h. The mixtnre was dilnted with water and extracted with benzene. The organic layer was washed with water, dried over K2CO3 and evaporated. The residue was dissolved in ether, the ether solntion was ponred into ethanol and put into refrigerator. After several days yellow cristals of the tellnride (16.7 g, 50% yield) were separated and dried. 

On treatment with Pd(II) acetate, distyryl telluride fnmishes styryl acetate ... 

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