Continuous Additive Manufacturing using Olefin Metathesis
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Degradation of Polyvinyl Chloride by Sequential Dehydrochlorination and Olefin Metathesis.
Sign Up to like & getrecommendations! 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.
Sign Up to like & getrecommendations! 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
Cross‐Metathesis on Immobilized Substrates – Application to the Generation of Synthetically and Biologically Relevant Structures
Sign Up to like & getrecommendations! 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
Model Studies for the Preparation of Oxepanes and Fused Compounds by Tandem [4+3] Cycloaddition/Ring‐Opening Metathesis/Cross Metathesis
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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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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
Synthesis and Catalytic Activity of PolyHIPE-Supported NHC-Bearing Ruthenium Initiator for ROMP
Sign Up to like & getrecommendations! Published in 2018 at "Catalysis Letters"
DOI: 10.1007/s10562-018-2467-4
Abstract: Although generally the ruthenium based homogeneous catalysts are used to initiate metathesis reactions, immobilization of homogeneous ruthenium metathesis catalysts on various solid supports has attracted a lot of interest from the scientific community in recent… read more here.
Keywords: polyhipe supported; nhc bearing; bearing ruthenium; polyhipe ... See more keywords
Synthesis of N-Substituted Indoles via Aqueous Ring-Closing Metathesis
Sign Up to like & getrecommendations! Published in 2020 at "Catalysis Letters"
DOI: 10.1007/s10562-020-03271-3
Abstract: Abstract We report herein the synthesis of N -substituted indoles resulting from the ring-closing metathesis of indole precursors bearing N -terminal alkenes. The aqueous metathesis of the indole precursors gave good yields of N -substituted… read more here.
Keywords: metathesis; synthesis substituted; closing metathesis; substituted indoles ... See more keywords
In situ Mo(CO)₆-based catalysts for alkyne metathesis: Silanols vs phenols as co-catalysts under thermal and photochemical activation
Sign Up to like & getrecommendations! Published in 2020 at "Catalysis Communications"
DOI: 10.1016/j.catcom.2020.105944
Abstract: Abstract A systematic study on the use of silanols and phenols as effective activators in Mo(CO)₆ – based catalytic systems for metathesis of 4-decyne and 1-phenyl-1-propyne is reported. In comparison with traditionally used phenols, aryl-substituted… read more here.
Keywords: catalysts alkyne; silanols phenols; situ based; based catalysts ... See more keywords