OsHCl(CO)(P1Pr3)2 as catalyst for ring-opening metathesis polymerization (ROMP) and tandem ROMP-hydrogenation of norbornene and 2,5-norbornadiene

被引：55

作者：

Cobo, N

Esteruelas, MA ^{[1
]}

González, F

Herrero, J

López, AM

Lucio, P

Oliván, M

机构：

[1] Univ Zaragoza, Inst Ciencia Mat Aragon, Dept Quim Inorgan, CSIC, E-50009 Zaragoza, Spain

[2] Univ Cantabria, Dept Ingn Quim & Quim Inorgan, E-39005 Santander, Spain

来源：

JOURNAL OF CATALYSIS | 2004年 / 223卷 / 02期

关键词：

homogeneous catalysis; ring-opening polymerization; hydrogenation; osmium;

D O I：

10.1016/j.jcat.2004.01.028

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Complex OsHCl(CO)((PPr3)-Pr-i)(2) catalyzes the ring-opening metathesis polymerization (ROMP) of norbomene and 2,5-norbomadiene to give poly(norbomene) and poly(norbornadiene), respectively. In both cases the resulting polymers have a high cis (74-95%) content. The stereoregularity or tacticity of the cyclopentane and cyclopentene ring sequences in poly(norbornene) and poly(norbornadiene) estimated from the C-13(H-1) NMR spectra of the hydrogenated derivatives was found to be syndiotactic. Complex OsHCl(CO)((PPr3)-Pr-i)(2) is also active in tandem ROMP-hydrogenation of norbornene and 2,5-norbornadiene. At 40degreesC and 3 atm of H-2, poly(norbomene) is fully hydrogenated in 48 h, while poly (norbornadiene) is fully hydrogenated in 48 h at 75 degreesC and 3 atm of H-2. The complex RuHCl(CO)((PPr3)-Pr-i)(2) is also active in ROMP and tandem ROMP-hydrogenation of norbomene, obtaining trans-poly(norbornene) and hydrogenated poly(norbornene), respectively. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：319 / 327

页数：9

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