EP 1758848 A1 20070307 - SEPARATION OF UNSYMMETRICAL DIIMINES BY LIQUID CHROMATOGRAPHY
Title (en)
SEPARATION OF UNSYMMETRICAL DIIMINES BY LIQUID CHROMATOGRAPHY
Title (de)
AUFTRENNUNG VON UNSYMMETRISCHEN DIIMINEN DURCH FLÜSSIGCHROMATOGRAPHIE
Title (fr)
SYNTHESE DE DIIMINES ASYMETRIQUES PAR CHROMATOGRAFIE LIQUIDE
Publication
Application
Priority
- US 2005014597 W 20050427
- US 56574004 P 20040427
Abstract (en)
[origin: WO2005105734A1] Novel unsymmetrical diimines containing a polar group are made by preparing a mixture of the unsymmetrical diimine and two symmetrical diimines, for example by reacting a dicarbonyl compound with two primary amines. The unsymmetrical diimine is then purified by liquid chromatography. The unsymmetrical diimines are useful as ligands in olefin polymerization catalysts.
IPC 8 full level
C07C 249/02 (2006.01); C07C 251/20 (2006.01)
CPC (source: EP)
C07C 249/02 (2013.01); C07C 251/20 (2013.01); C07C 2603/20 (2017.04)
Citation (search report)
See references of WO 2005105734A1
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
WO 2005105734 A1 20051110; CN 1942433 A 20070404; EP 1758848 A1 20070307
DOCDB simple family (application)
US 2005014597 W 20050427; CN 200580011872 A 20050427; EP 05744356 A 20050427