Method for producing quaterrylene-3,4:13, 14-tetracarboxy diimides by direct synthesis

US7741487B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Martin Koenemann · Ludwigshafen, DE
• Arno Boehm · Mannheim, DE
• Hermann Bidlingmaier · Offenburg, DE
• Reinhold Rieger · Ludwigshafen, DE
• Peter Blaschka · Ludwigshafen, DE
• Helmut Reichelt · Neustadt, DE
• Matthias Krieger · Soest, DE

Key dates

• Filing date: Aug 4, 2005
• Grant date: Jun 22, 2010
• Expiry date: Oct 4, 2027

Classification

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

Abstract

A process for preparing quaterrylene-3,4:13,14-tetracarboximides of the general formula Iin whichR, R′ are each independently hydrogen or optionally substituted C1-C30-alkyl, C5-C8-cycloalkyl or aryl or hetaryl;which comprises reacting a perylene-3,4-dicarboximide of the general formula IIain the presence of a base-stable, high-boiling, organic solvent and of an alkali metal base or alkaline earth metal base, with a perylene-3,4-dicarboximide of the general formula IIbin which X is hydrogen, bromine or chlorine.