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Original Articles

Tandem ethylene oligomerization and Friedel–Crafts alkylation of toluene catalyzed by hyperbranched nickel complex and ethylaluminium dichloride

, , , , &
Pages 55-61 | Received 25 Jul 2017, Accepted 05 Sep 2019, Published online: 30 Sep 2019
 

Abstract

New hyperbranched iminopyridyl ligand was synthesized with 1.0 generation hyperbranched polyamidoamine molecule and pyridine-2-carbaldehyde. Reaction of the ligand with NiCl2·6H2O afforded the hyperbranched iminopyridyl nickel complex. The compounds were characterized by IR, UV, 1H NMR, 13C NMR and ESI-MS. The complex upon activation with ethylaluminum dichloride (EtAlCl2) produced a tandem catalyst system that oligomerized ethylene to butene and hexene and subsequently used the olefins present in the reaction medium to alkylate toluene that was used as solvent in the reactions. This led to mono-, di-alkyltoluenes with ethylene, butene and hexene.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (No. 21576048) and Petroleum Innovation Foundation of China (No. 2014D-5006-0503) for the financial support.

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