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Ring metathesis

Dienes can react intermolecularly or intramolecularly. Intermolecular reactions generate rings, usually alkenes or dienes. Alkenes methasis can be used to form very large rings, including 21-membered lactone rings. Metathesis with vinyl-cyclo-... [Pg.1457]

Meta (fisxa-) afterwards after, beyond metaphor (i.e. beyond the real meaning) position beyond ortho on a ring metathesis (i.e. product of mixing)... [Pg.611]

Gyclopentadienyl ring metathesis with organocalcium or organopotassium compounds constitutes a further method for the synthesis of decamethylplumbocene 34 and, for example, furnishes compound 34 in 59% or, respectively, 35% yield55 (Equation (17)). [Pg.890]

Scheme 7 Syntheses of bis-phosphonio-benzophospholides by ring metathesis... Scheme 7 Syntheses of bis-phosphonio-benzophospholides by ring metathesis...
CRM, see Cyclopentadienyl ring metathesis Cross-coupling polymerization miscellaneous reactions, 11, 678 overview, 11, 653-690... [Pg.87]

In contrast, the cyclotrimerization catalyzed by the Grubbs catalyst involves consecutive intramolecular ring metathesis through carbene complexes or formation of a ruthenabicy-clo[3.2.0]heptatriene intermediate similar to that formed in the cobalt complex-catalyzed reaction. This mechanism is illustrated in Scheme 2 using acetylene as the alkyne source and CpRuCl[COD] as catalyst. [Pg.2347]

AQUACULTURECHEMICALS] (Vol3) ROMP. See Ring-opening metathesis polymerization... [Pg.858]

Aqueous ring-opening metathesis polymerization (ROMP) was first described in 1989 (90) and it has been appHed to maleic anhydride (91). Furan [110-00-9] reacts in a Diels-Alder reaction with maleic anhydride to give exo-7-oxabicyclo[2.2.1]hept-5-ene-2,3—dicarboxylate anhydride [6118-51 -0] (24). The condensed product is treated with a soluble mthenium(Ill) [7440-18-8] catalyst in water to give upon acidification the polymer (25). Several apphcations for this new copolymer have been suggested (91). [Pg.453]

Ring-Opening Polymerization. Ring-opening polymerization of cycloolefins in the presence of tungsten- or molybdenum-based catalysts proceeds by a metathesis mechanism (67,68). [Pg.430]

V. Dragutan, A. T. Balaban, and M. Dimonie, Olefin Metathesis and Ring-OpeningPolymeris tion of Cycloolefins,John Wiley Sons, Ltd., Chichester, U.K., 1985. [Pg.433]

Tetrakis-Cp uranium complexes are readily prepared via metathesis of UCl and KCp in refluxing benzene. These complexes are a relatively rare example of a pseudotetrahedral complex with four Tj -Cp rings, (rj-ring) (25). The Cp derivative has been shown to react with CO and CO2 to give acyl and carboxylato complexes. This complex also reacts with alkyl haUdes to afford the U(IV) complex, Cp UX (X = halide). [Pg.334]

Ring-Opening Metathesis Polymerization. Several new titanacyclobutanes have been shown to initiate living ring-opening metathesis polymerization (ROMP) systems. These have been used to make diblock and triblock copolymers of norbomene [498-66-8] (N) and its derivatives (eg, dicyclopentadiene [77-73-6] (D)) (Fig. 2) (41). [Pg.181]

A drawback to the Durham method for the synthesis of polyacetylene is the necessity of elimination of a relatively large molecule during conversion. This can be overcome by the inclusion of strained rings into the precursor polymer stmcture. This technique was developed in the investigation of the ring-opening metathesis polymerization (ROMP) of benzvalene as shown in equation 3 (31). [Pg.35]

Trifluoromethyl-substitutedazimines are surprisingly stable compounds. They are accessible by 1,3-dipole metathesis from tnfluoromethyl-substituted azomethine imines and certain nitroso compounds [187, 188] On photolysis, an electrocyclic ring closure first gives the triaziridines, which are stable at room temperature. On heating above 80-100 C, a valence tautomenzation takes place and azimines are formed [189] (equation 43). [Pg.865]

The reaction of 4,4-bis(tnfluoromethyl)-I,3-diaza-1,3-butadienes with certain a,P-unsaturated ketones yields pyrimidine derivatives A two-step mechanism, metathesis-electrocyclic ring closure and metathesis-intramolecular ene reaction, is a plausible explanation for the experimental results (pathway 4, equa-bon 25) [259]... [Pg.873]

Synthesis of heterocycles via ring-closing heterodiene metathesis 98JCS(P1)371. [Pg.217]

Synthesis of azasugars and alkaloids via ring-closing metathesis 99EJ0959. [Pg.226]

When a mixture of alkenes 1 and 2 or an unsymmetrically substituted alkene 3 is treated with an appropriate transition-metal catalyst, a mixture of products (including fi/Z-isomers) from apparent interchange of alkylidene moieties is obtained by a process called alkene metathesis. With the development of new catalysts in recent years, alkene metathesis has become a useful synthetic method. Special synthetic applications are, for example, ring-closing metathesis (RCM) and ring-opening metathesis polymerization (ROM) (see below). [Pg.10]


See other pages where Ring metathesis is mentioned: [Pg.70]    [Pg.135]    [Pg.175]    [Pg.182]    [Pg.182]    [Pg.91]    [Pg.121]    [Pg.4252]    [Pg.121]    [Pg.58]    [Pg.4251]    [Pg.186]    [Pg.432]    [Pg.70]    [Pg.135]    [Pg.175]    [Pg.182]    [Pg.182]    [Pg.91]    [Pg.121]    [Pg.4252]    [Pg.121]    [Pg.58]    [Pg.4251]    [Pg.186]    [Pg.432]    [Pg.113]    [Pg.113]    [Pg.149]    [Pg.476]    [Pg.481]    [Pg.481]    [Pg.857]    [Pg.477]    [Pg.425]    [Pg.429]    [Pg.334]    [Pg.182]    [Pg.189]    [Pg.25]    [Pg.166]    [Pg.264]    [Pg.257]    [Pg.174]    [Pg.194]    [Pg.12]   
See also in sourсe #XX -- [ Pg.2 , Pg.2 , Pg.458 , Pg.1013 , Pg.1015 ]




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1,3,5,7-Cyclooctatetraene, ring-opening metathesis polymerization

1,4-cyclooctadiene, ring-opening metathesis

1,4-cyclooctadiene, ring-opening metathesis polymerization

Alcohol ring-closing metathesis

Alkene metathesis medium rings synthesis

Alkene metathesis ring-closing

Alkynes intramolecular ring-closing metathesis

Annulation ring-closing metathesis

Approaches using Ring-opening Metathesis Polymerization (ROMP)

Arene complexes ring-opening metathesis polymerization

Asymmetric Ring-Closing Metathesis

Asymmetric ring opening cross metathesis AROCM)

Asymmetric ring-closing metathesis (ARCM

Asymmetric ring-opening metathesis reactions

Benzvalene, ring-opening metathesis polymerization

Carbenes ring-closing metathesis

Carbocycles ring-closing metathesis

Carbocyclic ring-closing metathesis

Catalytic cycles ring-closing metathesis

Chain-growth polymerizations ring-opening metathesis

Chauvin mechanism ring closing metathesis

Chemical synthesis, polymers ring-opening metathesis

Chiral auxiliaries ring-closing metathesis strategy

Ciguatoxin, ring-closing metathesis

Claisen/ring-closing metathesis

Cross-metathesis and ring-closing

Cyclic dienes ring-opening metathesis polymerization

Cyclic polymers ring opening metathesis

Cyclization Ring-closing metathesis

Cycloalkenes ring-opening metathesis polymerization

Cyclobutenes ring-opening metathesis polymerization

Cyclohexenes ring-opening metathesis polymerization

Cyclooctadienes ring-opening metathesis polymerization

Cyclooctatetraenes ring-opening metathesis polymerization

Cyclooctene ring opening metathesis polymerization

Cyclooctenes ring-opening metathesis polymerization

Cyclopentene ring-opening metathesis polymerization

Cyclopentenes ring-opening metathesis polymerization

Diastereoselective ring closing metathesis

Diastereoselectivity ring-closing metathesis

Dicyclopentadiene ring opening metathesis polymerization

Dicyclopentadienes ring-opening metathesis polymerization

Diels-Alder cycloaddition/ring-closing metathesis

Diels-Alder reaction ring-closing metathesis

Dienes from ring opening cross metathesis

Dienes ring-closing metathesis, olefin

Dienes, ring-closing metathesis

Dihydropyran ring-closing metathesis

Eight-membered rings, ring-closing metathesis

Enantioselectivity ring-closing metathesis

Epothilones ring-closing olefin metathesis strategy

Evidence from ring-opening metathesis polymerization (ROMP)

Ferrocene polymers ring-opening metathesis polymerization

Ferrocene-functionalized polymer ring-opening metathesis

Ferrocenophanes, ring-opening metathesis

Ferrocenophanes, ring-opening metathesis polymerization

Five-membered rings, ring-closing metathesis strategy

Frontal ring-opening metathesis

Frontal ring-opening metathesis polymerization

Grubbs ring-closing metathesis

High-Yield Synthesis of a Dicopper(I) Trefoil Knot using Ring-Closing Metathesis Methodology

Highly efficient ring-opening metathesis polymerization (ROMP)

Immobilized ring-closing metathesis

Intramolecular ring-closing metathesis

Involvement of three-membered ring compounds in metathesis reactions

Kinetic asymmetric ring-closing metathesis

Kinetics ring-opening metathesis

Lactones ring-opening metathesis

Latent Ruthenium Catalysts for Ring Opening Metathesis Polymerization (ROMP)

Lindlar reduction alkyne ring closing metathesis

Living polymers ring opening metathesis polymerization

Living ring opening metathesis

Living ring opening metathesis polymerization

Macrocycle Syntheses by Ring Closing Metathesis (RCM)

Macrocycles by Ring-closure Metathesis

Macrocyclic Ring Closing Metathesis

Macrocyclic natural products olefin ring-closing metathesis

Macrocyclic natural products ring-closing metathesis

Macrolactone ring-closing olefin metathesis

Manzamine ring-closing metathesis

Metathesis diastereoselective ring rearrangement

Metathesis five-membered rings

Metathesis reactions ring-closing

Metathesis reactions, ring-closure

Metathesis reactions, ring-closure carbene complexes

Metathesis reactions, ring-closure catalyst

Metathesis ring closure/opening

Metathesis ring-closing alkyne

Metathesis ring-closing enyne

Norbomadienes ring-opening metathesis polymerization

Norbomene ring-opening metathesis polymerization

Norbomenes ring-opening cross metathesis

Norbomenes, ring-opening metathesis

Norbomenes, ring-opening metathesis polymerization

Norbornadiene ring-opening metathesis polymerization

Norbornene complexes, ring-opening metathesis

Norbornene complexes, ring-opening metathesis polymerization

Norbornene monomers, ring-opening metathesis

Norbornene monomers, ring-opening metathesis polymerization

Norbornenes ring opening metathesis polymerization

Olefin metathesis medium ring formation

Olefin metathesis ring-opening

Olefin metathesis ring-opening polymerization

Olefins enyne ring closing metathesis

Olefins ring-closing olefin metathesis

Organic ring-closing metathesis

Oxepines ring-closing metathesis

Passerini/ring-closing metathesis

Phenylenevinylene Block Copolymers by Ring-Opening Metathesis Polymerization

Phenylenevinylene Homopolymers and Block Copolymers via Ring-Opening Metathesis Polymerization

Poly ring-closing metathesis

Poly ring-opening metathesis

Poly ring-opening metathesis polymerization

Polyalkenamers metathesis ring-opening polymerization

Polymer synthesis ring opening metathesis polymerization

Polynorbomene via ring opening metathesis polymerization

Polypentenamer via ring opening metathesis polymerization

Pyridines ring-closing metathesis reaction

RCM-ROM Sequences - Ring-rearrangement Metathesis (RRM)

RING REARRANGEMENT METATHESIS (RRM) A NEW CONCEPT IN PIPERIDINE AND PYRROLIDINE SYNTHESIS

RING-OPENING METATHESIS POLYMERIZATION OF CYCLIC ALKENES

ROMP (Ring-opening metathesis

ROMPs, ring-opening olefin metathesis

Relay ring-closing metathesis

Relay ring-closing metathesis, olefins

Ring Opening Cross-Metathesis ROCM)

Ring closing alkyne metathesis RCAM)

Ring closing metathesis , carbene synthesis

Ring closing metathesis , carbene synthesis applications

Ring closing metathesis enyne precursors

Ring closing metathesis industrial applications

Ring closing metathesis natural product synthesis

Ring closing metathesis of dienes

Ring closing metathesis, tethered

Ring closure metathesi

Ring dosing metathesis

Ring expansion metathesis polymerisation

Ring metathesis polymerization

Ring olefin metathesis

Ring opening alkene metathesis

Ring opening alkene metathesis polymerization

Ring opening cross metathesis

Ring opening cross metathesis asymmetric

Ring opening metathesis amphiphilic polymers

Ring opening metathesis copolymerizations

Ring opening metathesis derivatives

Ring opening metathesis monomer synthesis

Ring opening metathesis polymerization Subject

Ring opening metathesis polymerization catalyst incorporation

Ring opening metathesis polymerization polymer thermodynamics

Ring opening metathesis polymerization polymers

Ring opening metathesis polymerization products

Ring opening metathesis polymerization self-healing polymers

Ring opening metathesis polymers

Ring opening metathesis synthesis

Ring opening-closing metathesis

Ring rearrangement metathesis

Ring-Closing Metathesis (RCM) Reactions

Ring-Closing Metathesis 2] Rotaxane

Ring-Closing Metathesis-Isomerization Sequences

Ring-Closing Olefin Metathesis (RCM)

Ring-Opening Metathesis Polymerization of Norbornene Using an MTO Catalyst

Ring-closing alkyne metathesi

Ring-closing alkyne metathesis complex

Ring-closing alkyne metathesis epothilones

Ring-closing alkyne metathesis stereoselective synthesis

Ring-closing alkyne metathesis tungsten alkylidyne complex

Ring-closing diene metathesis

Ring-closing metatheses

Ring-closing metathesi

Ring-closing metathesis asymmetric, using chiral catalyst

Ring-closing metathesis carbocyclics

Ring-closing metathesis cleavage reaction

Ring-closing metathesis enantioselective

Ring-closing metathesis enynes

Ring-closing metathesis macrocycles

Ring-closing metathesis macrolides

Ring-closing metathesis of diene

Ring-closing metathesis polymerization

Ring-closing metathesis reaction Hoveyda-Grubbs catalyst

Ring-closing metathesis reaction alkene

Ring-closing metathesis reaction aromatic rings

Ring-closing metathesis reaction benzene rings

Ring-closing metathesis reaction cycle

Ring-closing metathesis reaction enyne

Ring-closing metathesis reaction metal catalysts

Ring-closing metathesis reaction regioselective synthesis

Ring-closing metathesis reaction transition metal-catalyzed

Ring-closing metathesis reactions Subject

Ring-closing metathesis strained compounds

Ring-closing metathesis strategy

Ring-closing metathesis with Pauson-Khand reaction

Ring-closing metathesis, RCM

Ring-closing metathesis, allylic amination

Ring-closing metathesis/isomerization

Ring-closing olefin metatheses 12- member

Ring-closing olefin metathesis

Ring-closing olefin metathesis reaction

Ring-closure metathesis

Ring-expansion metathesis

Ring-expansion metathesis polymerization

Ring-expansion metathesis polymerization REMP)

Ring-opening Metathesis Polymerization (ROMP) Approach to Polymer-grafted CNTs

Ring-opening cross-metathesis reaction

Ring-opening insertion metathesis polymerization

Ring-opening metathesis

Ring-opening metathesis catalysts

Ring-opening metathesis characteristics

Ring-opening metathesis copolymerization

Ring-opening metathesis copolymerization ROMP)

Ring-opening metathesis enynes

Ring-opening metathesis heterocyclic monomers

Ring-opening metathesis pathways

Ring-opening metathesis polymerisation

Ring-opening metathesis polymerisation ROMP)

Ring-opening metathesis polymerizatio

Ring-opening metathesis polymerization

Ring-opening metathesis polymerization Group 6 initiators

Ring-opening metathesis polymerization ROMP polymers

Ring-opening metathesis polymerization ROMP)

Ring-opening metathesis polymerization alkyne

Ring-opening metathesis polymerization applications

Ring-opening metathesis polymerization carbene synthesis

Ring-opening metathesis polymerization characteristics

Ring-opening metathesis polymerization cross-linking

Ring-opening metathesis polymerization described

Ring-opening metathesis polymerization general aspects

Ring-opening metathesis polymerization initiators

Ring-opening metathesis polymerization mechanism

Ring-opening metathesis polymerization molecular weight control

Ring-opening metathesis polymerization norbomadiene

Ring-opening metathesis polymerization of cyclic alkynes

Ring-opening metathesis polymerization of norbornene

Ring-opening metathesis polymerization organometallic polymers

Ring-opening metathesis polymerization overview

Ring-opening metathesis polymerization substituted norbornenes

Ring-opening metathesis polymerization techniques

Ring-opening metathesis polymerization transfer agents

Ring-opening metathesis polymerization utility

Ring-opening metathesis precipitation polymerization

Ring-opening metathesis regioselective reactions

Ring-opening metathesis ruthenium

Ring-opening metathesis sequence, olefins

Ring-opening metathesis stereochemistry

Ring-opening metathesis thiophenes

Ring-opening olefin metathesis polymerization ROMPSs)

Ring-rearrangement metathesis olefins

Ring-rearrangement metathesis, examples

Ruthenium catalysts olefin ring-closing metathesis

Ruthenium complexes intramolecular ring-closing metathesis

Ruthenium ring-closing metathesis

Ruthenium-catalyzed ring-closing olefin metathesis

Sequences Initiated by Ring-Closing Olefin Metathesis

Seven-membered rings, ring-closing metathesis

Seven-membered rings, ring-closing metathesis strategy

Standard ring-closing metathesis

Stereochemistry ring-closing metathesis

Stereoselectivity ring-closing metathesis

Subject ring-closing metathesis

Surface-initiated ring-opening metathesis

Surface-initiated ring-opening metathesis polymerization

Synthesis ring-closing metathesis

THE RING-CLOSING METATHESIS APPROACH TO FUMAGILLOL

Tandem reactions ring-rearrangement metathesis

Temporary Silicon-Tethered Ring-Closing Metathesis Reactions in Natural Product Synthesis

Transition Metal-catalyzed Ring-opening Metathesis Polymerization (ROMP) of Metallocenophanes

Transition enyne ring-closing metathesis

Variation 1 Ring-Opening Metathesis Polymerization (ROMP)

Variation 3 Ring-Closing Metathesis

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