From Diorgano Tellurium Diacetates

3- Dihydrobenzo[A]fur-2-ylmethyl 4-Methoxyphcnyl Tellurium To a solution of 0.285 g (0.55 mmol) of 4-methoxybenzeneteIlurinic anhydride in 5 ml acetic acid are added 0.134g (1.0 mmol) 2-allyl-phenol in one portion. The mixture is refluxed for 15 h and then concentrated under reduced pressure. The residue is reduced with 0.1 g (2 mmol) hydrazine hydrate in 5 ml ethanol at 60° for 15 min. The mixture is cooled to 20°, poured into water, and extracted with two 25-ml portions of dichloromethane. The organic layer is washed with brine and dried with anhydrous magnesium sulfate. The dried mixture is filtered. The solvent is evaporated from the filtrate under reduced pressure and the residue is chromatographed on silica gel with dichloromethane as the mobile phase. White needles are obtained upon recrystallization from methanol yield 94% m.p. 86°. 

4-methoxyphenyl 2-oxaspiro[4.6]undec-3-yl tellurium yield 94% yellow oil 

4-methoxyphenyl l-oxahicyclo[4.4.0]dec-2-ylmethyl tellurium yield 45% yellow oil 

3- dihydrobenzo[bYur-2-ylmethyl 2-naphthyl tellurium yield 92% m.p. 72° 

2-acetyloxy-3-phenyl-1-propyl 4-methoxyphenyl tellurium yield 68% yellow oil 

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A few diorgano tellurium hydroxide (hydrogen) sulfates are reported in the older literature. Diethyl tellurium hydroxide sulfates were claimed to have been produced from the hydroxide chloride and silver sulfate1 and from the dihydroxide and sulfuric acid2. Several ill-defined compounds that could be or could contain hydroxide hydrogen sulfates were obtained when dibenzo-l,4-oxatellurin or its 10,10-diacetate were treated with sulfuric acid3. 

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