Benzophenonehydrazones

US5405871A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Roger Graham Hall · Chur, CH
• Alfons Pascual · Basel, CH
• Odd Kristiansen · Möhlin, CH

Key dates

• Filing date: Apr 6, 1994
• Grant date: Apr 11, 1995
• Expiry date: Apr 6, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D317/46
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula ##STR1## wherein each of o and p, independently of the other, is 0, 1, 2, 3, 4 or 5, the radicals R.sub.1 being the same or different when o is greater than 1 and the radicals R.sub.2 being the same or different when p is greater than 1; PA1 each of R.sub.1 and R.sub.2, independently of the other, is C.sub.1 -C.sub.4 alkyl, halo-C.sub.1 -C.sub.4 alkyl, halogen, --NO.sub.2, --OH, C.sub.1 -C.sub.4 alkoxy, halo-C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, halo-C.sub.1 -C.sub.4 alkylthio, --O--S(.dbd.O)--R.sub.6, --O--S(.dbd.O).sub.2 --R.sub.6, phenoxy or --N(R.sub.11)SO.sub.2 R.sub.12 and/or two substituents R.sub.1 and/or two substituents R.sub.2 are, independently of one another, together --Y--Z--Y--; PA1 R.sub.3 is hydrogen, C.sub.1 -C.sub.4 alkyl or halo-C.sub.1 -C.sub.4 alkyl; PA1 R.sub.4 is hydrogen, C.sub.1 -C.sub.4 alkyl, halo-C.sub.1 -C.sub.4 alkyl, unsubstituted phenyl or naphthyl or mono- or di-substituted phenyl or naphthyl; PA1 R.sub.5 is --S--R.sub.7, --S(.dbd.O)--R.sub.7, --S(.dbd.O).sub.2 --R.sub.7, --NO.sub.2, --CN, --C(.dbd.O)--R.sub.8 or --C(.dbd.O)--OR.sub.8 ; PA1 R.sub.6 is C.sub.1 -C.sub.8 alkyl, or halo-C.sub.1 -C.sub.8 alkyl or …