| 摘要 |
There is provided a means to produce industrially a highly pure 2-hydroxy-4-oxa-5-thiatricyclo[4.2.1.03,7]nonane 5,5-dioxide derivative in high yield from highly pure and industrially available raw materials. The production method for a sultone derivative of the present invention comprises a step (A) to obtain a sulfonic acid derivative by hydrolyzing a sulfonyl halide derivative represented by the following chemical formula 1: or an enantiomer thereof and a step (B) to obtain a corresponding sultone derivative represented by the following chemical formula 2: or an enantiomer thereof by treating the sulfonic acid derivative with a oxidizing agent.
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