Electrochemically reduced tungsten-based active species as catalysts for metathesis-related reactions: ring-opening metathesis copolymerization of cyclopentene with cyclooctene

Karabulut, Solmaz; Çetinkaya, Sevil; İmamoǧlu, Yavuz

doi:10.1002/aoc.921

Cited by 5 publications

(2 citation statements)

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“…Using electrochemically generated WCl 6 -based catalysts, Cetinkaya et al copolymerized norbornene (NBE) with cyclopentene (CPE) to poly(CPE-co-NBE) [82], 1,5-cyclooctadiene with norbornene to poly(PB-co-NBE), cyclooctene (COC) with norbornene to poly(COC-co-NBE) [83], as well as cyclooctene with cyclopentene to poly(COC-co-CPE) [84] (Fig. 9).…”

Section: Synthesis Of Functional Polymers and Co-polymersmentioning

confidence: 99%

Olefin metathesis meets rubber chemistry and technology

Leimgruber

Trimmel

2015

Monatsh Chem

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This article summarizes possible applications of olefin metathesis in rubber chemistry and technology. There are three main research directives with valuable contributions to the synthesis, recycling, and characterization of elastomers. First, ring opening metathesis polymerization as well as acyclic diene metathesis polycondensation yields polyalkenamers with cross-linkable double bonds, and thus can be used for the synthesis of defined rubbers serving as raw materials in rubber technology. Secondly, by cross metathesis reaction, natural rubber (and synthetic rubber) can be functionalized resulting in telechelic polymers or small molecule specialty chemicals. Thirdly, olefin metathesis offers the possibility of degrading the cross-linked rubber network into smaller soluble pieces, enabling different analytical possibilities such as characterization of cross-linking sites, determination of rubber, rubber additives and carbon black, and exploration of the rubber-metal adhesive interface. Additionally, this route can also be used for recycling of rubber products. Graphical abstract

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Section: Synthesis Of Functional Polymers and Co-polymersmentioning

confidence: 99%

Olefin metathesis meets rubber chemistry and technology

Leimgruber

Trimmel

2015

Monatsh Chem

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“…21,22 We previously reported many scientific studies on the application of WCl 6 -e À -Al-CH 2 Cl 2 catalyst system to olefin metathesis reactions [23][24][25][26][27][28][29] but only one study on MoCl 5 -e À -Al-CH 2 Cl 2 catalyst system to ROMP of norbornene. 30 In this paper we described the synthesis of ROMP of COT with the electrochemically generated W and Mo-based catalyst.…”

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confidence: 99%

Electro-Induced Early Transition Metal Metathesis Catalyst Systems for the Production of Polyacetylene

Karabulut

2009

Polym. J.

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The use of electro-induced Mo and W-based catalysts has been investigated in the ring opening metathesis polymerization (ROMP) of 1,3,5,7-cyclooctatetraene (COT). The soluble and conjugated polyacetylene (PA) was obtained under ambient temperature and pressure without employing any secondary reagent (comonomer, chain transfer agent) or substituted monomer (R-COT). NMR analysis results show that the electrochemical Mo-based system leads to a completely (100%) trans product, however, mainly (80%) trans polymer was obtained with W-based analogue for PA.KEY WORDS: Ring Opening Metathesis Polymerization (ROMP) / 1,3,5,7-Cyclooctatetraene (COT) / Polyacetylene (PA) / Transition Metal Catalyst / Electrochemistry / Conjugated polymers, the simplest being polyacetylene, are of current interest because the substantial electronic delocalization along their backbones gives rise to interesting optical and nonlinear optical properties and allows them to become good electrical conductors. These properties might lead to a variety of applications including optical signal processing and information storage, lightweight substitutes for metals in batteries and materials for solar energy conversion.

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