With Reaction at a Carbonyl Group

Alkyl aryl tellurium compounds with a carbonyl group in the molecule undergo a variety of reactions characteristic of the carbonyl function. 

The alkyltelluro group is generally introduced into aldehydes and ketones protected in the form of their acetals. The acetal groups in the protected acetylphenyl alkyl and 2-formylphenyl alkyl tellurium compounds are hydrolyzed by strong sulfuric or hydrochloric acid to carbonyl groups without affecting the C—Te —C moiety. 

Similarly, the following acetals were hydrolyzed by hydrochloric acid  

Butyl 2-Formyipbenyl Tellurium A well-stirred mixture of 9.0 g (25 mmol) of butyl 2-(diethoxymethyl)-phenyl tellurium and 10 m/of concentrated hydrochloric acid is heated for 0.5 h. The solution is then cooled, extracted with diethyl ether, the extracts are dried with anhydrous magnesium sulfate, the solvent is evaporated, and the residue is distilled under reduced pressure yield 5.5 g (80%) b.p. 140-142°/0.1 torr. 

Irgolic Organo Tellurium Compounds with 2 Te —C Bonds or 1 Te = C Bond 

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