申请人:Sumitomo Chemical Company, Limited
公开号:US04293702A1
公开(公告)日:1981-10-06
A process for producing N-alkylbenzothiazolone derivatives of the formula (I), ##STR1## wherein R.sub.1 is a hydrogen, chlorine, bromine, fluorine atom or a methyl group, and R.sub.2 is an alkyl group having 1 to 5 carbon atoms, from 2-halogenobenzothiazole derivatives of the formula (II), ##STR2## wherein R.sub.1 is as defined above and X is a chlorine, bromine or fluorine atom, which is a starting material, through the intermediate of 2-alkoxybenzothiazole derivatives of the formula (III), ##STR3## wherein R.sub.1 and R.sub.2 are as defined above, or benzothiazolone derivatives of the formula (IV), ##STR4## wherein R.sub.1 is as defined above.
一种生产公式(I)的N-烷基苯并噻唑酮衍生物的方法,其中R.sub.1是氢、氯、溴、氟原子或甲基基团,R.sub.2是具有1至5个碳原子的烷基基团,从公式(II)的2-卤代苯并噻唑衍生物作为起始原料,通过公式(III)的2-烷氧基苯并噻唑衍生物的中间体,其中R.sub.1和R.sub.2如上所定义,或公式(IV)的苯并噻唑酮衍生物,其中R.sub.1如上所定义。