Soluble polyaromatic compounds

US5102971A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Thomas Himmler · Odenthal, DE
• Rudolf Braden
• Joachim Genz · Krefeld, DE
• Karsten-Josef Idel · Krefeld, DE
• Ralf Pakull · Krefeld, DE

Key dates

• Filing date: Sep 14, 1990
• Grant date: Apr 7, 1992
• Expiry date: Sep 14, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2531/24
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for the preparation of polyaromatic compounds in which an aromatic dichloro compound, optionally in the presence of an anhydrous aprotic solvent, is reacted with metallic zinc, manganese or magnesium in the presence of a catalyst system of PA1 (1) from 0.1 to 25 mol-% (based on the dihalogen compound) of a nickel salt, nickel complex salt or nickel complex, PA1 (2) from 2 to 100 mol per mol of nickel in (1) of a triarylphosphine and optionally PA1 (3) from 0.1 to 10 mol per mol of nickel (1) of a halide, sulphate or phosphate of an alkali metal, alkaline earth metal, zinc, magnesium or manganese.