With Replacement of a Hydrogen Atom

The proton on the ethenyl-CH group in ethenyl phenyl tellurium is replaced by lithium upon treatment with lithium dialkylamides in THF or diethyl ether at temperatures between — 20° and — 70°. The 1-lithio-l-ethenylphenyl tellurium reacted with deuterium oxide, benzaldehyde, and diphenyl ketone as expected  

Phenyl-1-trimethylsily 1-1-ethenyl tellurium was similarly obtained in 41% yield as a liquid boiling at 108°/0.2 torr. 

1-Lithioethenyl phenyl tellurium was not alkylated by 1-propyl iodide or allyl bromide. Only diphenyl ditellurium and ethenyl phenyl tellurium were isolated from the reaction mixtures.  

Butyl 3-thienyl tellurium was hthiated exclusively in the 5-position of the thiophene ring upon treatment with lithium diisopropylamide. The lithiated compound reacted with dimethylacetamide to produce 5-acetyl-3-thienyl butyl tellurium.  

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

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