A process for the preparation of 2-chlorosulfonyl-4-(N-substituted sulfamyl)-chlorobenzene compounds of the general formula:
wherein R is a hydrogen atom or a lower alkyl group, X is a 5-or 6-membered carbocyclic group which may contain an oxygen atom or atoms as ring-constituting members and may be substituted on the ring by one or more lower alkyl groups, and n is 0 or 1,
which process comprises reacting a 2,4-dichloro- sulfonylchlorobenzene of the formula:
with an amine of the general formula:
wherein R, X and n are as defined above, in the presence of an acid-binding agent at a temperature of below 10°C.
一种通式为 2-
氯磺酰基-4-(N-取代
氨基磺酰基)-
氯苯化合物的制备方法:
其中 R 是氢原子或低级烷基,X 是 5 或 6 元碳环基团,该基团可包含一个或多个氧原子作为成环 成员,并可在环上被一个或多个低级烷基取代,n 是 0 或 1、
该工艺包括将通式为 2,4-二
氯-磺酰基
氯苯与通式为 2,4-二
氯-磺酰基
氯苯的胺反应:
与通式如下的胺反应
其中 R、X 和 n 如上定义,在有酸结合剂存在的情况下,温度低于 10℃。