Articles with "metathesis" as a keyword



Continuous Additive Manufacturing using Olefin Metathesis

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Published in 2022 at "Advanced Science"

DOI: 10.1002/advs.202200770

Abstract: The development of chemistry is reported to implement selective dual‐wavelength olefin metathesis polymerization for continuous additive manufacturing (AM). A resin formulation based on dicyclopentadiene is produced using a latent olefin metathesis catalyst, various photosensitizers (PSs)… read more here.

Keywords: manufacturing using; olefin metathesis; metathesis; continuous additive ... See more keywords

SIMes/PCy3 mixed ligand-coordinated alkyl group-tagged ruthenium indenylidene complexes : synthesis, characterization and metathesis activity

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Published in 2018 at "Applied Organometallic Chemistry"

DOI: 10.1002/aoc.4548

Abstract: We report on the synthesis and characterization of SIMes/PCy3 mixed ligand-coordinated second-generation ruthenium catalysts, bearing various 3-alkyl-1-indenylidene ligands, denoted as RuCl2(3-alkyl-1-indenylidene)(SIMes)(PCy3), in which alkyl is isopropyl (4f), tert-butyl (4g) or cyclohexyl (4h). The characterization of… read more here.

Keywords: ruthenium; simes pcy3; spectroscopy; ligand ... See more keywords

Testing Lipophilic Cyclic(Alkyl)(Amino)Carbene‐Based Ruthenium Benzylidene Catalysts in Cross Metathesis of 1‐Dodecene at Ultralow Loadings (Below One Part‐Per‐Million)

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Published in 2025 at "ChemCatChem"

DOI: 10.1002/cctc.202500753

Abstract: A series of ruthenium benzylidene complexes bearing cyclic(alkyl)(amino)carbene (CAAC) ligands were evaluated for the cross‐metathesis of 1‐dodecene (2) to produce (E/Z)‐docos‐11‐ene (3), a valuable fine chemical for producing of alkenyl succinic anhydride (ASA, 1) for… read more here.

Keywords: metathesis; cyclic alkyl; cross metathesis; dodecene ... See more keywords

Ethenolysis Without Ethene: A Practical and Safe Lab Method to Introduce Terminal Alkene Groups via Metathesis Exemplified for Chiral Natural Product Chemistry

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Published in 2025 at "ChemCatChem"

DOI: 10.1002/cctc.202500890

Abstract: The introduction of terminal alkene groups through ethenolysis is a well‐established metathesis process. However, while being widely applied in industry, this reaction is not performed without risk in organic synthesis laboratories due to the hazardous… read more here.

Keywords: metathesis; chemistry; ethenolysis; terminal alkene ... See more keywords

Degradation of Polyvinyl Chloride by Sequential Dehydrochlorination and Olefin Metathesis.

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Published in 2023 at "ChemPlusChem"

DOI: 10.1002/cplu.202300184

Abstract: Polyvinyl chloride (PVC) is a problematic waste plastic with limited options for recycling or upcycling. Herein, we demonstrate preliminary results  in  breaking down the long carbon chains of PVC into oligomers and small organic molecules.… read more here.

Keywords: degradation polyvinyl; polyvinyl chloride; carbon; metathesis ... See more keywords

Remarkably Efficient Microwave-Assisted Cross-Metathesis of Lipids under Solvent-Free Conditions.

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Published in 2017 at "ChemSusChem"

DOI: 10.1002/cssc.201601824

Abstract: Catalytic transformation of renewable feedstocks into fine chemicals is in high demands and olefin metathesis is a sophisticated tool for biomass conversion. Nevertheless, the large-scale viability of such processes depends on the conversion efficiency, energy… read more here.

Keywords: canola oil; ethenolysis; microwave assisted; cross metathesis ... See more keywords

En route investigation of reaction conditions’ influence on cross‐metathesis yields employing Grubbs 2nd generation–p‐cresol catalyst derivative – Part 1

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Published in 2024 at "European Journal of Inorganic Chemistry"

DOI: 10.1002/ejic.202400085

Abstract: A study investigated the ideal p‐cresol to Grubbs second‐generation catalyst (GII) ratio for maximizing selectivity in cross‐metathesis reactions. Adding p‐cresol to GII enhances selectivity for cross‐metathesis over self‐metathesis, with 100 equivalents of p‐cresol ensuring optimal… read more here.

Keywords: metathesis; reaction; catalyst; generation ... See more keywords
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Cross‐Metathesis on Immobilized Substrates – Application to the Generation of Synthetically and Biologically Relevant Structures

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Published in 2017 at "European Journal of Organic Chemistry"

DOI: 10.1002/ejoc.201601487

Abstract: Olefin metathesis constitutes a seemingly endless area of research that has had an enormous impact on several branches of chemistry, both in industry and in academia. Once the potential of this reaction as a carbon–carbon… read more here.

Keywords: chemistry; substrates application; metathesis immobilized; cross metathesis ... See more keywords
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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

Theoretical evidence for bond stretch isomerism in Grubbs olefin metathesis

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Published in 2017 at "Journal of Computational Chemistry"

DOI: 10.1002/jcc.24814

Abstract: A comprehensive density functional theory study on the dissociative and associative mechanisms of Grubbs first and second generation olefin metathesis catalysis reveals that ruthenacyclobutane intermediate (RuCB) observed in the Chauvin mechanism is not unique as… read more here.

Keywords: bond; stretch isomerism; bond stretch; rucb ... See more keywords

Bimolecular Cross‐Metathesis of a Tetrasubstituted Alkene with Allylic Sulfones

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Published in 2019 at "ChemistryOpen"

DOI: 10.1002/open.201800296

Abstract: Abstract Exquisite control of catalytic metathesis reactivity is possible through ligand‐based variation of ruthenium carbene complexes. Sterically hindered alkenes, however, remain a generally recalcitrant class of substrates for intermolecular cross‐metathesis. Allylic chalcogenides (sulfides and selenides)… read more here.

Keywords: ruthenium; tetrasubstituted alkene; cross metathesis; allylic sulfones ... See more keywords