Pyrazolyl nickel dihalides, prepared from bis(pyrazolyl-methyl)benzene,), when activated with ethyl aluminum dichloride produce highly active catalysts that oligomerize ethylene to mainly 1-butene and 1-hexene. If toluene is the solvent for the ethylene oligomerization reaction and in the presence of excess ethyl aluminum dichloride, the olefins formed readily alkylate toluene to butyl-toluene (A  ), dibutyl-toluene (B  ) and tributyl-toluene (C  ) as the major products . The presentation will include discussion of the tandem nature of this one-pot reaction to alkyl-toluene.

Pyrazolyl nickel dihalides and ethylaluminium dichloride as tandem catalysts for one-pot synthesis of alkyl-toluenes via ethylene oligomerization

245th National Meeting (2013)

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