Reactions with Formation of Heterocyclic Compounds

Arenetellurolates have been used as starting materials for the preparation of heterocyclic compounds. Intramolecular nucleophilic attack by tellurium on the acetylenic carbon in 2-ethynyl-2-propenetellurolate yielded a 2,3-dihydrotellurophene derivative (p. 408). 

Cycloaddition of phenylethynetellurolate to dimethyl acetylenedicarboxylate formed 2,3-bis methoxycarbonyl -4-phenyltellurophene and unstable linear adducts . With carbon 

Irgolic Organic Tellurium Compounds with one Tc,C Bond 

The condensation of 2-formylethenetellurolates with chloromethanes bearing activating groups, produced tellurophenes with substitutents in the 2-position (p, 732). 

Protonation of sodium phenylethynetellurolate by hydrogen chloride in diethyl ether led to 1,3-ditelluretane derivatives via cyclodimerization of the tellurol. 3,5-Dibenzylidene- 

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