申请人:Seitetsu Kagaku Co., Ltd.
公开号:US04853158A1
公开(公告)日:1989-08-01
Process for preparing 2-alkyl-5-haloacetylbenzenesulfonamide represented by the general formula (1), ##STR1## (wherein R.sup.1 is an alkyl group having 1 to 5 carbon atoms; and X is a chlorine atom, bromine atom or iodine atom), characterized by halogenating a 5-acetyl-2-alkylbenzenesulfonamide represented by the general formula (2), ##STR2## (wherein R.sup.1 is the same as defined above) in a lower alcohol represented by the general formula (3), R.sup.4 --OH (wherein R.sup.4 is an alkyl group having 1 to 5 carbon atoms).
使用一般公式(1)代表的制备2-烷基-5-卤乙酰基苯磺胺的过程,##STR1##(其中R.sup.1是具有1至5个碳原子的烷基基团;X是氯原子、溴原子或碘原子),其特征在于在一般公式(2)代表的5-乙酰基-2-烷基苯磺胺中进行卤代作用,##STR2##(其中R.sup.1与上述定义相同),在一般公式(3)R.sup.4 -OH(其中R.sup.4是具有1至5个碳原子的烷基基团)中使用较低的醇进行卤代作用。