Synlett 2003(15): 2292-2296  
DOI: 10.1055/s-2003-42107
LETTER
© Georg Thieme Verlag Stuttgart · New York

ZnCl2 as an Efficient Catalyst in the Thiolysis of 1,2-Epoxides by Thiophenol in Aqueous Medium

David Amantini, Francesco Fringuelli, Ferdinando Pizzo*, Simone Tortoioli, Luigi Vaccaro*
Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto, 8 06123 Perugia, Italy
Fax: +39(075)5855560; e-Mail: pizzo@unipg.it; luigi@unipg.it ;
Further Information

Publication History

Received 2 September 2003
Publication Date:
22 October 2003 (online)

Abstract

ZnCl2 (5 mol%) is an efficient catalyst for the thiolysis of 1,2-epoxides by thiophenol in water at pH 4.0. A variety of β-hydroxy phenylsulfides were obtained in short reaction times and excellent yields. Starting from cyclohexene oxide (1), two one-pot multi-step procedures in sole water (thiolysis/oxidation with H2O2) have been realized, for the chemoselective synthesis of the corresponding β-hydroxysulfoxides 19 or for the related β-hydroxysulfone 20.