Patent · US Active

Method for producing perylene-3,4-dicarboxylic acid imides

US7799920B2 · kind B2 · utility

4Cited by

1References

8Claims

0Family size

Assignee

BASF SE

Inventors

Martin Koenemann · Ludwigshafen, DE
Peter Blaschka · Ludwigshafen, DE
Helmut Reichelt · Neustadt, DE

Key dates

Filing date	Nov 4, 2005
Grant date	Sep 21, 2010
Priority date	—
Expiry date	Jan 17, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D221/18
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for preparing perylene-3,4-dicarboximides which bear a sterically demanding substituent on the imide nitrogen atom by reacting a perylene-3,4:9,10-tetracarboxylic dianhydride with a sterically hindered primary amine in a substantially anhydrous reaction medium, which comprises undertaking the reaction in the presence of a tertiary amine, of a solvent based on a cyclic imine or amide and of a Lewis acid as a catalyst.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.