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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 34, 2004 - Issue 11
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Original Articles

Organic Reactions in Ionic Liquids: An Efficient Method for Selective S‐Alkylation of 2‐Mercaptobenzothia(xa)zole with Alkyl Halides

Yi Hu Ningbo Institute of Technology, Zhejiang University, Ningbo, 315100, P.R. China; Department of Chemistry, Zhejiang University (Xi‐Xi Campus), Hangzhou, P.R. China
,
Zhen‐Chu Chen Ningbo Institute of Technology, Zhejiang University, Ningbo, 315100, P.R. China; Department of Chemistry, Zhejiang University (Xi‐Xi Campus), Hangzhou, P.R. ChinaCorrespondence[email protected]
,
Zhang‐Gao Le Department of Chemistry, Zhejiang University (Xi‐Xi Campus), Hangzhou, P.R. China
&
Qin‐Guo Zheng Pharmaceutical Science Research Institute, Aston University, Aston Triangle, Birmingham, UK
Pages 2039-2046 | Received 28 Oct 2003, Published online: 20 Aug 2006
 
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Abstract

Ionic liquids based on 1‐butyl‐3‐methylimidazolium hexafluorophosphate (BmimPF6) and 1‐butyl‐3‐methylimidazolium tetrafluoroborate (BmimBF4) are used as reusable reaction medium in the selective S‐alkylation of 2‐mercaptobenzothia(xa)zole with alkyl halides in the presence of potassium carbonate. This procedure is convenient, efficient, and generally gives rise to the S‐alkylated product exclusively.

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