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■ Facile Formation of Cyclic Polysulfides by a New Generation Method for Diatomic Sulfur

Kentaro Okuma,* Seiji Kuge, Yuji Koga, Kosei Shioji, Hisanobu Wakita, and Takahisa Machiguchi

*Department of Chemistry, Faculty of Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan

Abstract

A new generation of diatomic sulfur (1) has been achieved in a remarkably simple process by treatment of elemental sulfur with sodium hydride in the presence of phase-transfer catalysts. This facile generation of 1 has been trapped with olefins, diene, and triene to give cycloadducts as the form of cyclic sulfides in high yields.