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

POLYMER

卷:48

Article

Zinck, Philippe ; Valente, Andreia ; Mortreux, Andre ; Visseaux, Marc

关键词: polymer chemistry;    block copolymerisation;    transfer reactions;   

DOI  :  10.1016/j.polymer.2007.06.014

来源: Elsevier

【 摘 要 】

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 transinetallation between the neodynnium and the magnesium atom is further established with a transfer efficiency close to 100%. (c) 2007 Elsevier Ltd. All rights reserved.

【 授权许可】

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