申请人:Sumitomo Seika Chemicals Co., Ltd.
公开号:EP2687520A1
公开(公告)日:2014-01-22
The present invention provides a method for producing a 1,2-benzisothiazol-3-one compound by reacting a 2-(alkylthio)benzonitrile compound with a halogenating agent in the presence of water, wherein an alkyl halide that is generated as by-product is reacted with a sulfide to form an alkylthiol, which is converted into an alkali metal salt, and then the resulting alkali metal salt is reacted with a 2-halobenzonitrile compound to be converted into a 2-(alkylthio)benzonitrile compound and reused as a starting material for the production of a 1,2-benzisothiazol-3-one compound. By means of the present invention, it is possible to efficiently use the by-product that is generated during the production of a 1,2-benzisothiazol-3-one compound and economically produce a 1,2-benzisothiazol-3-one compound without placing a burden on the environment.
本发明提供了一种生产 1,2-苯并异噻唑-3-酮化合物的方法,该方法是将 2-(烷硫基)苯腈化合物与卤化剂在有水存在的情况下反应,其中作为副产品生成的烷基卤化物与硫化物反应生成烷基硫醇,烷基硫醇转化为碱金属盐,然后生成的碱金属盐与 2-卤代苯腈化合物反应转化为 2-(烷硫基)苯腈化合物、然后将生成的碱金属盐与 2-卤代苯腈化合物反应,转化为 2-(烷硫基)苯腈化合物,并作为生产 1,2-苯并异噻唑-3-酮化合物的起始原料再次使用。通过本发明,可以有效利用在生产 1,2-苯并异噻唑-3-酮化合物过程中产生的副产品,经济地生产 1,2-苯并异噻唑-3-酮化合物,而不会对环境造成负担。