Olefin polymerization by pentamethylcyclopentadienyl trimethyltitanium, Cp*TiMe3

被引：50

作者：

Ewart, SW ^{[1
]}

Baird, MC ^{[1
]}

机构：

[1] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada

来源：

TOPICS IN CATALYSIS | 1999年 / 7卷 / 1-4期

关键词：

titanium; olefin polymerization; Ziegler-Natta; carbocationic;

D O I：

10.1023/A:1019107632144

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The compound Cp*TiMe3 can be activated with a variety of Lewis and Bronsted acids to generate precursors of the cationic species [Cp*TiMe2](+). The latter can serve as an initiator for (a) the polymerization of ethylene and alpha-olefins via epsilon(2) coordination and a Ziegler-Natta process, (b) the ring opening metathesis polymerization of norbornene and the cyclopolymerization of 1,5-hexadiene, and (c) the polymerization of styrene, vinyl ethers, N-vinyl carbazole and isobutylene via epsilon(1) coordination and a carbocationic process. In addition, an as yet undefined product of decomposition of [Cp*TiMe2](+) catalyzes the polymerization of styrene to highly stereoregular syndiotactic polystyrene.

引用

页码：1 / 8

页数：8

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[41] ELECTRON-DEFICIENT (PENTAMETHYLCYCLOPENTADIENYL)TITANIUM TRIALKYLS - EVIDENCE OF TI-H-C AND TI-C-C INTERACTIONS - CRYSTAL AND MOLECULAR-STRUCTURE OF MU-[ORTHO-(CH2)2C6H4](ETA-5-C5ME5)TI[ORTHO-(CH2)2C6H4])2 [J].