METHOD FOR PRODUCING CYCLIC SULFONIC ACID ESTER AND INTERMEDIATE THEREOF

摘要

Provided is an efficient production method which makes it possible to obtain a cyclic sulfonic acid ester (sultone) not only at a low cost and with a high yield but also stably on an industrial scale. Specifically disclosed are: a method for producing hydroxysultone, which includes a first step in which a diol having a specific structure is reacted with a thionyl halide to obtain a cyclic sulfite ester having a specific structure, and a second step in which the cyclic sulfite ester is reacted with water and/or alcohol; a method for producing an unsaturated sultone having a specific structure, which includes a third step in which hydroxysultone having a specific structure is reacted with an acid halide or acid anhydride to obtain an intermediate, and then the intermediate is treated with a base; and a cyclic sulfite ester having a specific structure.