作者:Masao Shimizu、Hisashi Kikumoto、Takeo Konakahara、Yasuo Gama、Isao Shibuya
DOI:10.3987/com-99-8706
日期:——
Synthesis of 1,2-benzisothiazolin-3-ones by cyclization of 2-sulfenamoylbenzoates, which were prepared from amination of thiosalicylates by hydroxylamine-O-sulfonic acid, was examined. Although treatment of methyl 2-sulfenamoylbenzoate on heating gave unexpected 2-(2-methoxycarbonylphenylthio)-1,2-benzisothiazolin-3-one, the treatment with base at room temperature afforded 1,2-benzisothiazolin-3-one in a good yield.