Olefin Metathesis and Beyond

Fürstner, Alois

doi:10.1002/1521-3773(20000901)39:17<3012::aid-anie3012>3.0.co;2-g

Cited by 1,754 publications

(666 citation statements)

References 373 publications

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“…[1] Polymer chemistry and materials sciences have seen the introduction of new trends by metathesis-based techniques, such as ringopening metathesis polymerization (ROMP) or acyclic diene polymerization (ADMET). Complementary, cross-metathesis and ring-closing metathesis find ample application in organic chemistry.…”

mentioning

confidence: 99%

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Monolithic Materials: New High-Performance Supports for Permanently Immobilized Metathesis Catalysts

Mayr

Buchmeiser

2001

Angew. Chem. Int. Ed.

160

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confidence: 99%

“…(1)). [1] We decided to change this intermolecular selection to an intramolecular one when we embarked on a total synthesis of ture and the lack of basically any microporosity reduce diffusion to a minimum. This results in turnover frequences (TOFs) up to 25 min À1 , thus even exceeding homogeneous analogues.…”

mentioning

confidence: 99%

Monolithic Materials: New High-Performance Supports for Permanently Immobilized Metathesis Catalysts

Mayr

Buchmeiser

2001

Angew. Chem. Int. Ed.

160

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“…[11] Force constant calculations have also pointed to a relatively weak GaÀGa interaction. [12,13] The publication of the cluster species K 2 Ar*Ga 4 Ar*, which contains a Ga 4 ring with no GaÀGa triple bonding as part of an octahedral K 2 Ga 4 core, has underlined the importance of the alkali metal for the stability of 1. [14] However, apart from this isolated report, all arguments regarding the GaÀGa bonding in 1 have been grounded in calculations of various degrees of sophistication [2±11] and the original experimentally determined structural parameters.…”

Section: Methodsmentioning

confidence: 82%

“…The allyl group is versatile in organic transformations, including metathesis, [13] Diels-Alder and 1,3-dipolar cycloaddition reactions. [14] Olefin metathesis has been used successfully to cross-link amino acid derivatives [15] and cyclize peptides.…”

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confidence: 99%

The Selective Incorporation of Alkenes into Proteins in Escherichia coli

Zhang

Wang

Brock

et al. 2002

Angewandte Chemie Intl Edit

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Synthetic anchor: An incorporated allyl group may act in this way to allow protein modification in a site‐specific fashion. The nonnatural amino acid O‐allyl‐L‐tyrosine (1) has been site‐specifically incorporated into protein in E. coli. The yield of full‐length mutant Z‐domain protein is 5.6 mg L−1, in comparison to 9.2 mg L−1 of native Z‐domain protein. A high‐resolution mass spectrum suggests the fidelity for the incorporation of 1 is better than 99.8 %.

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“…Today most metathesis reactions are still being applied in small molecule synthesis. [239] The industrial application of polymeric materials prepared by means of ROMP include polyoctenamer and polypentenamer rubbers, amorphous polynorbornene, and reaction injection molding (RIM) of dicyclopentadiene to produce polydicyclopentadiene thermosets. [240] The ROMP polynorbornene (Norsorex from CdF Chimie, now marketed by Nippon Zeon) has a glass temperature of 35 8C and melting temperature variable between 170 and 205 8C as a function of the content of trans-double bonds in the chain.…”

Section: Metathesis Polymerizationmentioning

confidence: 99%

Catalytic Polymerization and Post Polymerization Catalysis Fifty Years After the Discovery of Ziegler's Catalysts

Mülhaupt

2003

Macro Chemistry & Physics

277

193

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During the 1950's the discoveries of Ziegler's organometallic catalyst systems and Natta's stereoselective olefin polymerization set the stage for extraordinary progress in polymer science and technology. Today advanced catalyst systems are available for catalytic carbon carbon bond formation by means of polyinsertion, metathesis, coupling reactions, and controlled radical polymerization. Modern catalytic olefin polymerization processes and polyolefins are environmentally friendly and meet the demands of a sustainable development. The architectures of homo‐ and copolymers based upon olefin, cycloolefin, diene, styrene and arene feed stocks are tailored as a function of single site catalysts' ligand frameworks. Polymer properties are varied over a very wide range, e.g., liquid/solid, rigid/soft, crystalline/amorphous/rubbery, permeable/impermeable, opaque/transparent, moldable/thermosetting, insulating/conducting. Advanced polymerization reaction engineering, copolymerization processes, reactor granule and reactor blend technologies, tailor‐made single site catalysts, catalyst blends and tandem catalysis improve property profiles, stability, morphology, and melt processing. Tuned cycloolefin polymers are new functional materials for electronic applications. Catalytic chain transfer (CCT) and atom transfer polymerization (ATRP) produce a variety of new functional polymers, reactive oligomers, and block copolymers. Aqueous polyolefin emulsions are obtained when catalytic olefin polymerization is performed in nanodroplets of catalyst miniemulsions. The scope of catalytic polymerization and post polymerization catalysis is progressing well beyond the frontiers of commodity polyolefin manufacturing. Advanced catalytic processes produce polar polymers such as polyethers, polyketones, polyesters, polycarbonates, polyamides, polyaramids, and polyimides. The new phosgene free polycarbonate syntheses are based upon the palladium catalyzed oxidative carbonylation. This overview highlights history, recent progress and modern trends in catalytic polymerization and catalytic polymer modification illustrated by selected examples.

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Olefin Metathesis and Beyond

Cited by 1,754 publications

References 373 publications

Monolithic Materials: New High-Performance Supports for Permanently Immobilized Metathesis Catalysts

Monolithic Materials: New High-Performance Supports for Permanently Immobilized Metathesis Catalysts

The Selective Incorporation of Alkenes into Proteins in Escherichia coli

Catalytic Polymerization and Post Polymerization Catalysis Fifty Years After the Discovery of Ziegler's Catalysts

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