From Diorgano Tellurium Dihalides and Sodium Alkoxides or Phenoxides

From Diorgano Tellurium Dihalides and Sodium Alkoxides or Phenoxides 

When diorgano tellurium dihalides are reacted with sodium alkoxides with the alcohols serving as solvent, diorgano tellurium dialkoxides are formed in good yields as white solids or as slightly-viscous, clear liquids that are quite stable towards air and moisture. 

Dimethyl Tellurium Dimethoxide A solution of 4.0 g (60 mmol) of sodium methoxide in methanol is added dropwise to a stirred solution of 12.34 g (30 mmol) of dimethyl tellurium diiodide in the same solvent and the mixture is stirred at 20° for 1 h. The methanol is evaporated under an aspirator vacuum and the residue is distilled under oil pump vacuum to furnish a clear liquid with a garlic-like odor yield 5.9 g (89%) b.p. 60°/1 torr. 

Alkyl aryl tellurium dichlorides and sodium 2,2,2-trifluoroethoxide in 2,2,2-trifluoro-ethanol produced alkyl aryl tellurium bis[2,2,2-trifluoroethoxides] as odorless, reddish, feebly-hygroscopic, viscous liquids that are quite stable at 20°. 

When the alcohol from which the sodium alkoxide is derived cannot serve as the reaction medium, the diaryl tellurium dichloride and the alkoxide or phenoxide are refluxed in benzene  

---