Method for the production of terylene-3,4:11,12-tetracarboxydiimides by direct synthesis

US7358362B2 · kind B2 · utility

Assignees

• BASF SE
• Maz-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V. · DE

Inventors

• Martin Koenemann · Ludwigshafen, DE
• Arno Boehm · Mannheim, DE
• Willi Helfer · Friedelsheim, DE
• Juergen Romeis · Ludwigshafen, DE
• Jianqiang Qu · Shanghai, CN
• Klaus Muellen · Cologne, DE

Key dates

• Filing date: Jan 15, 2005
• Grant date: Apr 15, 2008
• Expiry date: Mar 21, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D471/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing terylene-3,4:11,12-tetracarboximides Iwhere the variables are each defined as follows: in the presence of a base-stable, high-boiling organic solvent and of an alkali metal or alkaline earth metal base, with a naphthalene-1,8-dicarboximide IIIin which X is hydrogen, bromine or chlorine.