Patent ID: 6593437
Filing Date: 2003-07-15
Classification: C07C,C07F,C08F,C08G

Abstract:
A process for preparing 1,2-diimine compounds of the formula where the symbols have the following meaningsR1 and R2 are, independently of one another, alkyl, aryl or metallocenyl radicals, and R3, R4 are, independently of one another, H, alkyl or aryl radicals, or R3 and R4 are joined so as to form, with inclusion of the two imine carbon atoms, a 5- to 8-membered ring which may be saturated or unsaturated and may be unsubstituted or substituted by any hydrocarbon radicals, by reacting 1,2-dicarbonyl compounds with primary amines, which have been activated with trialkylaluminum compounds prior to the reaction with the 1,2-dicarbonyl compounds.