Process for the preparation of arylimides of perylene-3,4,9,10-tetracarboxylic acid

US4831140A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Ernst Spietschka · Idstein, DE
• Helmut Troster · Königstein, DE

Key dates

• Filing date: Apr 11, 1986
• Grant date: May 16, 1989
• Expiry date: Apr 11, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B5/62
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Process for the preparation of compounds of the formula (1) ##STR1## in which R.sub.1 denotes a phenyl or naphthyl radical which can be substituted by alkyl, cycloalkyl, alkoxy, aryloxy, arylazo or nitro groups or halogen atoms, and R.sub.2 denotes a hydrogen atom or a phenyl or naphthyl radical which can be substituted by alkyl, cycloalkyl, alkoxy, aryloxy, arylazo or nitro groups or halogen atoms, or denotes an alkyl (C.sub.1 -C.sub.8) radical, by condensation, at between 100.degree. C. and 300.degree. C., of perylene-3,4,9,10-tetracarboxylic dianhydride or a monoanhydride monoimide of the formula (2) ##STR2## in which R.sub.2 has the abovementioned meaning, with an arylamine of the formula (3) EQU R.sub.1 --NH.sub.2 (3) in which R.sub.1 has the abovementioned meaning, in the presence of dialkylamines of the formula (4) ##STR3## in which R' and R" denote straight-chain alkyl .sub.C.sbsb.1.sub.- C.sbsb.6 or branched alkyl .sub.C.sbsb.3.sub.-C.sbsb.6 or cycloalkyl .sub.C.sbsb.5.sub.-C.sbsb.6 groups, which can be substituted by hydroxyl, alkoxy .sub.C.sbsb.1.sub.-C.sbsb.4, alkyl .sub.C.sbsb.1.sub.-C.sbsb.4 amino, or phenyl or naphthyl groups which can be substituted on the aromatic …