Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic acids or salts thereof
Patent
1989-01-24
1990-08-14
Chan, Nicky
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfonic acids or salts thereof
562 64, 562 63, C07D14355
Patent
active
049489194
ABSTRACT:
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.
Brodt Werner
Papenfuhs Theodor
Chan Nicky
Hoechst Aktiengesellschaft
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