Synthesis of New Dialkylmagnesium Compounds by Living Transfer Ethylene Oligo‐ and Polymerization with Lanthanocene Catalysts

Useful intermediates for the synthesis of functionalized, linear alkyl chains by classical Grignard reactions or reactants for the synthesis of biblock copolymers by further reaction with polar monomers—the dialkylmagnesium compounds described herein are accessible in a living transfer polymerization under very mild conditions with [Cp LnCl 2 Li(OEt 2 ) 2 ] (Ln = Nd, Sm) as catalysts and simple dialkylmagnesium compounds RMgR′ (R = Et, R′ = Bu or R = R′ = n ‐hexyl) using ethylene as substrate.