In situ generated half-lanthanidocene based catalysts for the controlled oligomerisation of styrene: Selectivity, block copolymerisation and chain transfer

Philippe Zinck (1) , Andreia Valente (1) , André Mortreux (1) , Marc Visseaux (1)

1 UCCS - Unité de Catalyse et Chimie du Solide - UMR 8181

The Cp*Nd(BH4)2(THF)2/n-butylethylmagnesium combination affords a controlled and syndioselective oligomerisation of styrene. Living oligostyrenes can be used as macromonomers for block copolymerisation, leading to the unprecedented synthesis of a (polystyrene)-block- (1,4-trans polyisoprene) copolymer. Reversible transmetallation between the neodymium and the magnesium atom is further established with a transfer efficiency close to 100%.

Mots clés: Polymer chemistry; Block copolymerisation; Transfer reactions

Domaines: Catalyse; Polymères; Chimie de coordination

Philippe Zinck, Andreia Valente, André Mortreux, Marc Visseaux. In situ generated half-lanthanidocene based catalysts for the controlled oligomerisation of styrene: Selectivity, block copolymerisation and chain transfer. Polymer, 2007, 48, pp.4609-4614. ⟨10.1016/j.polymer.2007.06.014⟩. ⟨hal-00265032⟩