Chromium‐Catalyzed Highly Selective Oligomerization of Ethene to 1‐Hexene with N, N‐Bis[chloro(aryl)phosphino]amine Ligands. Issue 13 (14th June 2017)

• Record Type: Journal Article
• Authors: Höhne, Martha; Peulecke, Normen; Konieczny, Katharina; Müller, Bernd H.; Rosenthal, Uwe
• Is Part Of: ChemCatChem. Volume 9:Issue 13(2017)
• Page Start: 2467
• Page End: 2472
• Publication Date: 2017-06-14
• Subjects: amines -- chromium -- ligand effects -- oligomerization -- structure–activity relationships; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.201700448
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: Different N, N ‐bis[chloro(aryl)phosphino]amines were synthesized and characterized. The synthesized compounds were tested as ligands in the Cr‐catalyzed oligomerization of ethene. The effect of the successive increase of the steric bulk either at one of the P substituents or at the N center on the product distribution of the oligomerization reaction was examined. We found a highly active and selective trimerization system with purities of the hexene fraction up to 99.9 % for 1‐hexene. Furthermore, we suppose an in situ methylation of the chlorinated ligands into the corresponding N, N ‐bis[methyl(aryl)phosphino]amines. Abstract : Keen for hexene : Different N, N ‐bis[chloro(aryl)phosphino]amines form highly active and selective trimerization catalysts that lead to purities of the hexene fraction up to 99.9 % for 1‐hexene. Furthermore, an in situ methylation of the chlorinated ligands into N, N ‐bis[methyl(aryl)phosphino]amines is supposed.