Tetrahedron

Thermal and microwave assisted reactions of 2, 5-disubstituted thienosultines with [60] fullerene: non-Kekulé biradicals and self-sensitized oxygenation of the …

CC Chi, IF Pai, WS Chung

Index: Chi, Chih-Chin; Pai, I-Feng; Chung, Wen-Sheng Tetrahedron, 2004 , vol. 60, # 48 p. 10869 - 10876

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Citation Number: 20

Abstract

Refluxing an o-dichlorobenzene solution of 2, 5-disubstituted thienosultines with [60] fullerene for 2–24h gave both 1: 1 and 2: 1 cycloadducts in 37–79% isolated yields. The reaction was highly accelerated by microwave irradiation giving comparable yields of cycloadducts. Sultines underwent cheletropic extrusion of SO2 to form the corresponding non-Kekulé biradical intermediates, which were subsequently trapped by [60] fullerene to ...