Aluminium Tellurolates

The methylation of sodium 9-of//ipcarboranetellurolate and 9- je/acarboranetelluro-late with methyl iodide yielded 9-carboranyl methyl tellurium compounds. 

Reaction of methanetellurol with lithium aluminum hydride in diethyl ether caused liberation of hydrogen and formation of lithium tetrakis[methyltelluro aluminate. This compound was not isolated but reacted with silyl or germyl halides to give silyl or germyl methyl tellurium derivatives.  

Diisobutylaluminum benzenetellurolate was obtained when diphenyl ditellurium and two molar equivalents of diisobutylaluminum hydride were allowed to react in tetrahydrofuran at 20° for 0.5 hours under an atmosphere of argon. The reaction was complete when the theoretical volume of hydrogen had been released.  

Irgolic Organic Tellurium Compounds with one Te,C Bond 

The aluminum tellurolate is very sensitive towards air and moisture and, therefore, is not isolated but used in situ. Aluminum benzenetellurolates add to a-enones and to a,fi-unsaturated carboxylic acid esters. The adducts can be hydrolyzed to jS-phenyltelluro carbonyl compounds or reacted with an aldehyde  

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As a further development of the hydrotelluration of alkynes the addition of diisobutyl-aluminium tellurolate to terminal acetylene was investigated. 

Similar substitutions at activated vinylchlorides have been performed using aluminium tellurolates. ... 

Organyl tellurols are very unstable compounds owing to their extreme sensitivity to oxygen, giving the corresponding ditellurides. The first short-chain alkyltellurols (C1-C4) have been isolated as yellow liquids with an obnoxious odour, from the reaction of aluminium telluride and hydrogen telluride, respectively, with alcohols and aUcyl bromides. Aryltellurols seem not to have been isolated. As shown in Sections 3.1.3.2 and 3.2.2, aryl tellurolates are... 

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