With Replacement of a Hydroxy Group

4-Bis[hydroxymethyl]-2,5-diphenyltellurophene, when stirred with phosphorus tribro-mide in benzene at 20°, reacted to produce 3,4-bis[bromomethyl]-2,5-diphenyltellurophene.  

Refluxing of 2,5-bis[phenylhydroxymethyl]tellurophene and pyrrole in benzene/chloro-acetic acid (98 2) gave rise to 2,5-bis phenylpyrrolylmethylene]-2,5-dihydrotellurophene, which, in turn, was reacted with 2,5-bis[phenylhydroxymethyl]thiophene. Tetraphenyl-21-tellura-23-thiaporphyrin was isolated in 0.07% yield.  

Reactions at an sp -Carbon Atom 4.4.2.1. Affecting a Carbonyl Group 

Formyltellurophenes were reacted with hydroxylamine, hydrazine, 1,2-diaminobenzene, 1,3-bifunctional compounds with activated methylene groups, and lithium aluminum hydride. On reaction with hydroxylamine, oximes are formed.  

With 1,2-diaminobenzene, derivatives of acetone, or derivatives of dimethyl sulfide, bicyclic tellurophene derivatives are obtained.  

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