The Thermal Decomposition of<i>N</i>,<i>O</i>-Diacyl-<i>N</i>-<i>t</i>-butylhydroxylamines. III. Novel Routes to 2-Substituted 1,2-Benzisothiazol-3-(2<i>H</i>)-ones
作者:Yuzuru Uchida、Seizi Kozuka
DOI:10.1246/bcsj.55.1183
日期:1982.4
The reactions of N-alkyl- and N-aryl-2-(methylsulfinyl)benzamides and N-[2-(methylthio)benzoyl]-N-alkylhydroxylamines with thionyl chloride have been found to give 2-substituted1,2-benzisothiazol-3(2H)-ones in nearly quantitative yields. The reactions of N-[2-(methylthio)benzoyl]-N-arylhydroxylamines with thionyl chloride gave chlorinated anilides as the major products.
Method for producing alkylsulfinylbenzamides and 1,2-benzisothiazol-3-ones
申请人:SUMITOMO SEIKA CHEMICALS CO., LTD.
公开号:EP0657438A2
公开(公告)日:1995-06-14
A method for producing alkylthiobenzamide of formula (III) by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of an alkylthiobenzamide with a halogen in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent and a subsequent reaction with a halogen; and a method for producing a 1,2-benzisothiazol-3-one of formula (VI) by carrying out a reaction of a 2-(alkylthio)benzamide with a halogenating agent.
A method for producing an alkylthiobenzamide by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of an alkylthiobenzamide with a halogen in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent and a subsequent reaction with a halogen; and a method for producing a 1,2-benzisothiazol-3-one by carrying out a reaction of a 2-(alkylthio)benzamide with a halogenating agent.