Chemistry Letters

Synthesis of a New Tellurium Heterocycle, 5H, 7H-Dibenzo (b, g)(1, 5) tellurathiocin, and Isolation and Reactivity of Its Tellurathia Dication Salt.

…, Y Takaguchi, JJ Chiu, T Erata, N Furukawa

Index: Fujihara, Hisashi; Takaguchi, Yutaka; Chiu, Jer-Jye; Erata, Tomoki; Furukawa, Naomichi Chemistry Letters, 1992 , # 1 p. 151 - 154

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Citation Number: 7

Abstract

A new heterocycle containing tellurium and sulfur atoms, 5H, 7H-dibenzo [b, g][1, 5] tellurathiocin (1), has been synthesized. The transannular bond formation between tellurium and sulfur atoms was found in the reaction of 1 with coned H 2 SO 4 by 1 H, 13 C, and 125 Te NMR spectroscopy. Two-electron oxidation of 1 with 2 equiv. of NOPF 6 gave the tellurathia dication salt 3 (> Te+–S+< 2PF 6−) which acts as an oxidizing agent.