Chain-Shuttling Polymerization at Two Different Scandium Sites: Regio- and Stereospecific "One-Pot" Block Copolymerization of Styrene, Isoprene, and Butadiene

被引：125

作者：

Pan, Li ^{[1
,2
]}

Zhang, Kunyu ^{[1
,2
]}

Nishiura, Masayoshi ^{[1
,2
]}

Hou, Zhaomin ^{[1
,2
]}

机构：

[1] RIKEN Adv Sci Inst, Organometall Chem Lab, Wako, Saitama 3510198, Japan

[2] RIKEN Adv Sci Inst, Adv Catalyst Res Team, Wako, Saitama 3510198, Japan

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2011年 / 50卷 / 50期

基金：

日本学术振兴会;

关键词：

block copolymers; chain shuttling; copolymerization; scandium; syndiotactic polystyrene; EARTH-METAL ALKYL; MOLECULAR-WEIGHT DISTRIBUTION; SYNDIOSPECIFIC STYRENE; 1,3-DIENE POLYMERIZATION; OLEFIN POLYMERIZATION; COMPLEXES BEARING; SINGLE-COMPONENT; RECENT PROGRESS; CATALYSTS; ETHYLENE;

D O I：

10.1002/anie.201104011

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To each his own: Copolymerization of styrene and isoprene by catalysts Sc1 (syndiospecific for styrene) and Sc2 (cis-1,4-specific for isoprene) with a chain-shuttling agent iBu 3Al gives block copolymers of syndiotactic polystyrene (sPS) and cis-1,4-polyisoprene (PIP). Replacement of Sc2 with Sc3 (high 3,4-selectivity for isoprene polymerization) gives selectively copolymers having sPS and 3,4-PIP blocks. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：12012 / 12015

页数：4

共 54 条

[1]

[Anonymous], 2004, Angew. Chem, DOI DOI 10.1002/ANGE.200352730

[2]

[Anonymous], 2007, ANGEW CHEM-GER EDIT

[3] Catalytic production of olefin block copolymers via chain shuttling polymerization [J].