Synlett 2009(16): 2669-2672  
DOI: 10.1055/s-0029-1217977
LETTER
© Georg Thieme Verlag Stuttgart ˙ New York

An Efficient Catalytic Sulfonyloxylactonization of Alkenoic Acids Using Hypervalent Iodine(III) Reagent

Jie Yan*, Hong Wang, Zhenping Yang, Yan He
College of Chemical Engineering and Materials Sciences, Zhejiang University of Technology, Hangzhou 310032, Zhejiang, P. R. of China
Fax: +86(571)88320238; e-Mail: jieyan87@zjut.edu.cn;
Further Information

Publication History

Received 22 June 2009
Publication Date:
10 September 2009 (online)

Abstract

A novel and efficient catalytic method for sulfonyloxylactonization of alkenoic acids is reported. (Diacetoxyiodo)benzene could be used as a recyclable catalyst in combination with m-chloroperbenzoic acid as an oxidant in the presence of sulfonic acid to effect the cyclization of various alkenoic acids in CH2Cl2 at room temperature, giving sulfonyloxylactones in good yields.

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Typical Procedure for the Catalytic Sulfonyloxylactonization of Alkenoic Acids
To CH2Cl2 (2 mL), alkenoic acid 1 (0.3 mmol),(diacetoxy-iodo)benzene (0.03 mmol), MCPBA (75%, 0.3 mmol) and sulfonic acid 2 (0.3 mmol) were added. The mixture was stirred at r.t. for 24 hours and then H2O (5 mL), sat. aq Na2S2O3 (2 mL), and sat. aq Na2CO3 (2 mL) were added.
The mixture was extracted with CH2Cl2 (2 × 5 mL), the combined organic layer was washed with brine, dried over anhyd MgSO4, filtered, and concentrated under reduced pressure. The residue was purified by preparative TLC on a silica gel using (hexane-EtOAc, 2:1) as eluent to give sulfonyloxylacton 3 in good yields.