Nitrogen-tellurium-containing heterocycles. 3. Reaction of 2-phenylbenzotellurazole at the heteroatoms

Reactions of 2-phenylbenzotellurazole at both heteroatoms are studied. -Telluranes and molecular complexes with mercury and palladium salts are prepared. Exchange of a tellurium atom by sulfur is achieved. Alkylation of a heteroatom of the pyrrole type, the tellurium atom, is achieved in a series of benzazoles for the first time.For Communication 2, see 1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 989–993, July, 1989.