Articles with "opening metathesis" as a keyword



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Model Studies for the Preparation of Oxepanes and Fused Compounds by Tandem [4+3] Cycloaddition/Ring‐Opening Metathesis/Cross Metathesis

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Published in 2017 at "European Journal of Organic Chemistry"

DOI: 10.1002/ejoc.201700994

Abstract: Functionalised medium-sized ether rings were prepared in an efficient manner by [4+3] cycloaddition followed by ring-opening metathesis. This procedure provided medium-sized rings, which were shown to be useful for the assembly of fused bicyclic structures… read more here.

Keywords: ring opening; cycloaddition; chemistry; opening metathesis ... See more keywords

Periodically Functionalized Linear Polyethylene with Tertiary Amino Groups via Regioselective Ring-Opening Metathesis Polymerization

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Published in 2021 at "Macromolecules"

DOI: 10.1021/acs.macromol.0c02611

Abstract: Polymeric materials modified with tertiary amino groups exhibit attractive properties for use in aqueous environments. Ring-opening metathesis polymerization (ROMP) is one of the versatile tools to... read more here.

Keywords: tertiary amino; amino groups; metathesis polymerization; opening metathesis ... See more keywords

Understanding the Microstructure of Poly(p-phenylenevinylene)s Prepared by Ring-Opening Metathesis Polymerization Using 13C-Labeled Paracyclophanediene Monomers

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Published in 2018 at "Macromolecules"

DOI: 10.1021/acs.macromol.8b00705

Abstract: Selectively main chain 13C-labeled poly(p-phenylenevinylene)s (PPVs) were synthesized by ring-opening metathesis polymerization (ROMP) of 13C-labeled dialkoxy-substituted [2,2] paracyclophane-1,9-dienes (M) using the Grubbs second generation ruthenium carbene complex (G2). Analysis of the natural abundance and 13C-labeled… read more here.

Keywords: metathesis polymerization; poly phenylenevinylene; ring opening; 13c labeled ... See more keywords

Synthesis of trans-Isotactic Poly(norbornene)s through Living Ring-Opening Metathesis Polymerization Initiated by Group VI Imido Alkylidene N-Heterocyclic Carbene Complexes

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Published in 2019 at "Macromolecules"

DOI: 10.1021/acs.macromol.9b00422

Abstract: The selectivity of several molybdenum and tungsten imido alkylidene N-heterocyclic carbene (NHC) complexes in the ring opening metathesis polymerization (ROMP) of enantiomerically pure endo,exo-2,3-dicarbomethoxynorborn-5-ene (DCMNBE) was examined by 1H- and 13C NMR spectroscopy. With one… read more here.

Keywords: imido alkylidene; alkylidene heterocyclic; trans isotactic; heterocyclic carbene ... See more keywords

(Arylimido)Vanadium(V)-Alkylidenes Containing Chlorinated Phenoxy Ligands: Thermally Robust, Highly Active Catalyst in Ring-Opening Metathesis Polymerization of Cyclic Olefins

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Published in 2018 at "Organometallics"

DOI: 10.1021/acs.organomet.8b00231

Abstract: A series of (imido)vanadium(V)-alkylidene complexes containing pentachlorophenoxy ligand of type, V(CHSiMe3)(N-2,6-R2C6H3)(OC6Cl5)(PMe3)2 [R = H, Cl, F, CH3], have been prepared, and the structure of V(CHSiMe3)(N-2,6-Me2C6H3)(OC6Cl5)(PMe3)2 was determined by X-ray crystallographic analysis. Ring-opening metathesis polymerization (ROMP)… read more here.

Keywords: metathesis polymerization; ring opening; opening metathesis; coe ... See more keywords

Additive Manufacturing of Degradable Materials via Ring-Opening Metathesis Polymerization (ROMP).

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Published in 2022 at "ACS applied materials & interfaces"

DOI: 10.1021/acsami.2c14411

Abstract: Thermoset materials comprise a significant proportion of high-performance plastics due to their shape permanence and excellent thermal and mechanical properties. However, these properties come at the expense of degradability. Here, we show for the first… read more here.

Keywords: polymerization romp; degradable materials; metathesis polymerization; opening metathesis ... See more keywords

Ring-Opening Metathesis Polymerization for the Synthesis of Terpenoid-Based Pressure-Sensitive Adhesives.

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Published in 2022 at "ACS macro letters"

DOI: 10.1021/acsmacrolett.2c00618

Abstract: Pressure-sensitive adhesives (PSAs) made from norbornene-functionalized terpenoid-based monomers are reported as a possible alternative to the conventional petrochemically based PSAs. For this, tetrahydrogeranyl, menthyl, and isobornyl norbornenate monomers, with a renewable carbon content up to… read more here.

Keywords: sensitive adhesives; pressure sensitive; opening metathesis; terpenoid based ... See more keywords

Ultrafast Monomer Emulsified Aqueous Ring-Opening Metathesis Polymerization for the Synthesis of Water-Soluble Polynorbornenes with Precise Structure.

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Published in 2023 at "ACS macro letters"

DOI: 10.1021/acsmacrolett.3c00284

Abstract: Ring-opening metathesis polymerization (ROMP) in an aqueous medium provides an important environmentally friendly platform for the preparation of water-soluble polymeric materials. However, it is challenging to keep high synthetic efficacy and good control over molecular… read more here.

Keywords: water soluble; monomer; opening metathesis; ring opening ... See more keywords

Access to Functionalized Materials by Metal-Free Ring-Opening Metathesis Polymerization of Active Esters and Divergent Postpolymerization Modification.

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Published in 2024 at "ACS macro letters"

DOI: 10.1021/acsmacrolett.3c00687

Abstract: Metal-free ring-opening metathesis polymerization (MF-ROMP) is an emerging polymerization strategy that provides access to ROMP materials by using organic initiators and photoredox catalysts. Unlike metal-mediated ROMP, MF-ROMP is not highly tolerant toward functionalized monomers. Herein,… read more here.

Keywords: metal free; opening metathesis; metathesis polymerization; free ring ... See more keywords

Chemical Activation of Frontal Ring-Opening Metathesis Polymerization.

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Published in 2025 at "ACS macro letters"

DOI: 10.1021/acsmacrolett.5c00345

Abstract: In this study, we present an innovative approach to frontal ring-opening metathesis polymerization (FROMP) through chemical activation. By locally concentrating Grubbs-type initiators, we accelerate exothermic polymerization at the activation site. Sufficient thermal energy initiates a… read more here.

Keywords: opening metathesis; frontal ring; ring opening; activation ... See more keywords

Alkyl Phosphite Inhibitors for Frontal Ring-Opening Metathesis Polymerization Greatly Increase Pot Life

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Published in 2017 at "ACS Macro Letters"

DOI: 10.1021/acsmacrolett.7b00270

Abstract: Frontal ring-opening metathesis polymerization (FROMP) has potential for use in rapid fabrication of structural polymers. However, the high activity of the ruthenium catalyst used for FROMP has limited the working time to read more here.

Keywords: ring opening; pot; opening metathesis; pot life ... See more keywords