申请人:Hoechst Aktiengesellschaft
公开号:US04948919A1
公开(公告)日:1990-08-14
A process for the preparation of arylaminonitrophenyl hydroxyethyl sulfones of the formula (1) ##STR1## in which Z denotes the radical ##STR2## in which R.sub.1 denotes a hydrogen atom or an --NH.sub.2, --NH--R or --N(R).sub.2 group, R representing a C.sub.1 -C.sub.4 -alkyl group, R.sub.2 denotes a hydrogen atom, a C.sub.1 -C.sub.4 -alkyl group or a C.sub.1 -C.sub.4 -alkoxy group, R.sub.3 represents a hydrogen, chlorine or bromine atom or a sulfonic acid, sulfonamide, carboxylic acid, carboxamide, hydroxyl, carbomethoxy, carboethoxy or hydroxyethylsulfonyl group, R.sub.4 denotes a hydrogen, chlorine or bromine atom or a sulfonic acid, carboxylic acid, hydroxy or C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkyl group, it being possible for 1-3 different R.sub.1 -R.sub.3 substituents, not more than two of which may, however, be identical, to be present in the radical Z.sub.a, and for 1-4 different R.sub.1 -R.sub.4 -substituents, not more than two of which may, however, be identical, to be present in the radical Z.sub.b, and R has the meaning mentioned earlier in the text, which comprises reacting compounds of the formula (2) ##STR3## in which X denotes a chlorine or bromine atom, with an amino compound of the formula ##STR4## in which R, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 have the said meanings, at 20.degree. to 180.degree. C., at pH values from 4.0 to 10.0 in water or in suitable organic solvents and in the presence of an inorganic or organic acid-binding agent.
一种制备公式(1)的芳基氨基硝基苯基羟乙基磺酮的方法,其中Z表示基团(2):其中R1表示氢原子或--NH2,--NH--R或--N(R)2基团,R代表C1-C4烷基基团,R2表示氢原子,C1-C4烷基基团或C1-C4烷氧基基团,R3表示氢,氯或溴原子或磺酸,磺酰胺,羧酸,羧酰胺,羟基,羧甲氧基,羧乙氧基或羟乙基磺酰基团,R4表示氢,氯或溴原子或磺酸,羧酸,羟基或C1-C4烷氧基或C1-C4烷基基团,其中在基团Za中可能存在1-3个不同的R1-R3取代基,其中最多不超过两个可以相同,而在基团Zb中可能存在1-4个不同的R1-R4取代基,其中最多不超过两个可以相同,R具有前文提到的含义,包括在20℃至180℃,pH值为4.0至10.0的水或适当的有机溶剂中,在无机或有机酸性剂的存在下,将公式(2)的化合物与公式中的氨基化合物反应的步骤。其中X表示氯或溴原子。