Aminobenzophenonesulfonic acids

US5153356A · kind A · utility

Assignee

• BASF SE

Inventors

• Gunther Lamm · Haßloch, DE
• Friedhelm Teich · Karlsruhe, DE

Key dates

• Filing date: Jul 22, 1991
• Grant date: Oct 6, 1992
• Expiry date: Jul 22, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Aminobenzophenones have the formula ##STR1## where the ring A may be benzofused, PA1 X.sup.1 is hydrogen or hydroxysulfonyl, PA1 X.sup.2 is hydrogen, hydroxysulfonyl, hydroxysulfonylphenyl, hydroxysulfonylbenzyl or hydroxysulfonylphenylethyl, PA1 R.sup.1, R.sup.2 and R.sup.3 are each independently of the others hydrogen, halogen, C.sub.1 -C.sub.12 -alkyl, cyclohexyl or C.sub.1 -C.sub.4 -alkoxy, or one of them may also be the radical of the formula ##STR2## where L is a chemical bond, C.sub.1 -C.sub.4 -alkylene or --O--CH.sub.2 -- and Y.sup.1, Y.sup.2 and Y.sup.3 are each independently of the others hydrogen, halogen, C.sub.1 -C.sub.12 -alkyl or C.sub.1 -C.sub.4 -alkoxy and R.sup.4, X.sup.1, X.sup.2 and the ring A are each as defined above, and PA1 R.sup.4 is hydrogen or chlorine, with the proviso that X.sup.1 and X.sup.2 are not both hydrogen, their intermediates having the formula ##STR3## where L is as defined above.