PROCESS FOR PREPARING 2,3-DIMETHYLBUT-1-ENE

摘要

Preparing 2,3-dimethylbut-1-ene comprises selective dimerization of propylene using a catalytic composition comprising a nickel compound mixed or complexed with a tertiary phosphine, an aromatic hydrocarbon, preferably mesitylene, an ionic non-aqueous medium of a quaternary ammonium halide or quaternary phosphonium halide, an aluminum halide, and optionally an aluminum organometallic compound.