Polymer-Supported Well-Defined Metathesis Catalysts

Buchmeiser, Michael R.

doi:10.1021/cr800207n

Cited by 305 publications

(190 citation statements)

References 167 publications

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“…On the other hand, non-ionic porous resins are also used in catalysis [403][404]. The catalyst is either a covalently attached organic molecule [405] or a metal that is chelated to the resin thanks to the electron donating ligands [406][407][408][409][410]. Simple precipitation of the metal to the pores is also reported [411][412].…”

Section: Ion-exchange Catalysis and Scavengingmentioning

confidence: 99%

Porous polymer particles—A comprehensive guide to synthesis, characterization, functionalization and applications

Gökmen

Prez

2012

Progress in Polymer Science

451

309

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Section: Ion-exchange Catalysis and Scavengingmentioning

confidence: 99%

Porous polymer particles—A comprehensive guide to synthesis, characterization, functionalization and applications

Gökmen

Prez

2012

Progress in Polymer Science

451

309

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“…6a) [74] and silica-supported tungsten [75][76][77][78] and molybdenum complexes (Fig. 6b) [79][80][81][82] are effective catalysts for alkane metathesis [69,71,77,[83][84][85].…”

Section: Introductionmentioning

confidence: 99%

Supported Single-Site Organometallic Catalysts for the Synthesis of High-Performance Polyolefins

2014

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Single-site organometallic catalysts supported on solid inorganic or organic substrates are making an important contribution to heterogeneous catalysis. Early and late transition metal single-site catalysts have changed the polyolefin manufacturing industry and research with their ability to produce polymers with unique properties. Moreover, several of these catalysts have been commercialized on a large scale. Their heterogenization for slurry or gas phase olefin polymerization is important to produce polyolefin as beads and to avoid reactor fouling. The large majority of supports currently used in industry are inorganic materials (SiO 2 , Al 2 O 3 , MgCl 2 ), with silica being the most important. Single-site supported catalysts are most commonly prepared by molecular-level anchoring/chemisorption, in which a molecular precursor undergoes reaction with the surface while maintaining most of the ligand sphere of the parent molecule. Chemisorption of discrete organometallic complexes on solid supports yields catalysts with well-defined active sites, greater thermal stability than the homogeneous analogues, and decreased reactor fouling versus the homogeneous analogues. This review presents a detailed account of the synthesis, characterization and polymerization properties of single-site catalysts supported on metal oxides and metal sulfated oxides, primarily carried out at Northwestern University.

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“…The most recent complete literature surveys include the Handbook of Metathesis, 8 a review of living ROMP by Bielawski and Grubbs,9 and Buchmeiser's review of polymer-supported well-defined metathesis catalysts. 10 This manuscript overviews the development of transition metal complexes as olefin metathesis catalysts, as well as recent researches on amino acid-and peptide-functionalized polymer synthesis by ROMP intended for application to bio-related materials.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in ring-opening metathesis polymerization, and application to synthesis of functional materials

Sutthasupa

Shiotsuki

Sanda

2010

Polym J

339

273

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This article reviews the development of catalysts for ring-opening metathesis polymerization (ROMP), synthesis of polymers bearing amino acids and peptides by ROMP of functionalized norbornenes, formation of aggregates and micelles, and applications of the polymers to medical materials. It also describes the control of monomer unit sequences, that is, living polymerization to synthesize block copolymers, and alternating copolymerization that is achieved on the basis of acid-base interactions. Polymer Journal (2010) 42, 905-915; doi:10.1038/pj.2010.94; published online 13 October 2010Keywords: alternating copolymerization; amino acid; block copolymerization; living polymerization; metathesis catalyst; peptide; ROMP INTRODUCTIONOlefin metathesis reactions are metal-mediated carbon-carbon (C-C) double bond exchange processes, 1,2 which were discovered in the mid 1950s. Chauvin proposed the commonly accepted mechanism for metathesis involving a metallacyclobutane, as illustrated in Scheme 1. 3 Initially, olefin metathesis was regarded as an odd reaction, but now it has undoubtedly established the position as one of the most important C-C bond formation reactions applicable to synthesis of a wide variety of useful products. In the early stages, transition metal chlorides were used as catalysts for the reaction, but the transition metal carbene complex catalysts designed by Schrock and Grubbs have remarkably advanced mechanistic analysis and control of catalytic activity by the choice of ligands. In 2005, Chauvin, Grubbs and Schrock were awarded the Nobel Prize in chemistry for development of the metathesis method in organic synthesis.Olefin metathesis polymerization is an application of metathesis reactions to polymer synthesis and includes ring-opening metathesis polymerization (ROMP) and acyclic diene metathesis (ADMET) polycondensation (Scheme 2). ADMET has been extensively developed by Wagener since 1987 4 for the synthesis of polyolefins having regularly spaced functional group branches and high thermal stability and crystallinity. 5,6 ADMET is also useful for synthesizing polymeric materials containing in-chain functionality. Although the general structures of the polymers obtained by ROMP and ADMET are illustratable in the same fashion as shown in Scheme 2, a completely different treatment is necessary from the viewpoint of polymerization kinetics. The former involves chain polymerization, whereas the latter is a step-growth polymerization process.

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Polymer-Supported Well-Defined Metathesis Catalysts

Cited by 305 publications

References 167 publications

Porous polymer particles—A comprehensive guide to synthesis, characterization, functionalization and applications

Porous polymer particles—A comprehensive guide to synthesis, characterization, functionalization and applications

Supported Single-Site Organometallic Catalysts for the Synthesis of High-Performance Polyolefins

Recent advances in ring-opening metathesis polymerization, and application to synthesis of functional materials

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