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
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
A stable ruthenium complex bearing a 1,2-dicarbadodecaborane(12)-1,2-dithiolate ligand and its activation for olefin metathesis
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2018.02.009
Abstract: Abstract In this article, a new ruthenium carbene catalyst containing a N-heterocyclic carbene, a pyridine-appended benzylidene carbene, and a 1,2-dicarbadodecab- orane(12)-1,2-dithiolate ligand was synthesized. The ruthenium complex is very stable in air or in solution… read more here.
Keywords: ruthenium; olefin metathesis; ruthenium complex; dithiolate ligand ... See more keywords
Silica-supported Z-selective Ru olefin metathesis catalysts
Sign Up to like & getrecommendations! Published in 2020 at "Molecular Catalysis"
DOI: 10.1016/j.mcat.2019.110743
Abstract: Abstract Recently reported thiolate-coordinated ruthenium alkylidene complexes show promise in Z-selective and stereoretentive olefin metathesis reactions. Herein we describe the immobilization of three Ru complexes containing a bulky aryl thiolate on mesostructured silica via surface… read more here.
Keywords: olefin; supported selective; selective olefin; olefin metathesis ... See more keywords
Olefin metathesis-crosslinked, bulky imidazolium-based anion exchange membranes with excellent base stability and mechanical properties
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Membrane Science"
DOI: 10.1016/j.memsci.2019.117793
Abstract: Abstract To improve the mechanical properties of anion exchange membranes (AEMs) with bulky imidazolium cations, a series of anion-conductive poly(2,6-dimethyl-phenylene oxide)s (PPO)s with crosslinkable terminal double bonds were synthesized by the Menshutkin reaction. Following crosslinking… read more here.
Keywords: anion exchange; bulky imidazolium; mechanical properties; olefin metathesis ... See more keywords
New olefin metathesis catalysts with fluorinated unsymmetrical imidazole-based ligands
Sign Up to like & getrecommendations! Published in 2018 at "Mendeleev Communications"
DOI: 10.1016/j.mencom.2018.11.015
Abstract: New olefin metathesis catalysts, unsaturated analogues of the Grubbs II and Hoveyda–Grubbs II ones, bearing bulky (alkoxy)hexafluoroisopropyl groups in one of the aryl substituent of NHC ligand provide high conversions in model ring closing metathesis… read more here.
Keywords: olefin metathesis; fluorinated unsymmetrical; catalysts fluorinated; new olefin ... See more keywords
Olefin metathesis polymerization: Some recent developments in the precise polymerizations for synthesis of advanced materials (by ROMP, ADMET)
Sign Up to like & getrecommendations! Published in 2017 at "Tetrahedron"
DOI: 10.1016/j.tet.2017.12.041
Abstract: Abstract Recent results for synthesis of end-functionalized polymers (EFP) by using olefin metathesis polymerization have been introduced including basic characteristics in ring-opening metathesis polymerization (ROMP) of cyclic olefins and acyclic diene metathesis (ADMET) polymerization for… read more here.
Keywords: metathesis polymerization; polymerization; olefin metathesis; synthesis ... See more keywords
Dynamic Control over Aqueous Poly(butadiene-b-ethylene oxide) Self-Assembly through Olefin Metathesis
Sign Up to like & getrecommendations! Published in 2018 at "Macromolecules"
DOI: 10.1021/acs.macromol.8b01417
Abstract: We show that olefin metathesis can be used in an extremely simple process to rapidly alter the morphology of self-assembled poly(butadiene-b-ethylene oxide) (PB–PEO) dispersions in situ. The addition of a water-insoluble Hoveyda–Grubbs catalyst to aqueous… read more here.
Keywords: ethylene oxide; self; poly butadiene; olefin metathesis ... See more keywords
Potentiostatically Controlled Olefin Metathesis
Sign Up to like & getrecommendations! Published in 2020 at "Organometallics"
DOI: 10.1021/acs.organomet.0c00052
Abstract: A Ru(II) complex supported by an N-heterocyclic carbene annulated to a redox-active naphthoquinone (NQ) was interrogated using a range of potentiodynamic and potentiostatic electrochemical techniqu... read more here.
Keywords: olefin metathesis; potentiostatically controlled; controlled olefin;
Molybdenum Benzylidyne Complexes for Olefin Metathesis Reactions
Sign Up to like & getrecommendations! Published in 2020 at "Organometallics"
DOI: 10.1021/acs.organomet.0c00491
Abstract: The molybdenum benzylidynes [ArC≡Mo(OC(CF3)2CH3)3(1,2-dimethoxyethane)], where Ar = Ph (2a), p-(OCH3)C6H4 (2b), p-(CF3)C6H4 (2c), p-(NO2)C6H4 (2d), or 4-(NO2)-3-(CF3)C6H3 (2e), and [p-(NO2)C6H4C≡Mo... read more here.
Keywords: molybdenum benzylidyne; c6h4; benzylidyne complexes; olefin metathesis ... See more keywords
Routes to High-Performing Ruthenium–Iodide Catalysts for Olefin Metathesis: Ligand Lability Is Key to Efficient Halide Exchange
Sign Up to like & getrecommendations! Published in 2021 at "Organometallics"
DOI: 10.1021/acs.organomet.1c00253
Abstract: Clean, high-yielding routes are described to ruthenium–diiodide catalysts that were recently shown to enable high productivity in olefin metathesis. For the second-generation Grubbs and Hoveyda catalysts (GII: RuCl2(H2IMes)(PCy3)(=CHPh); HII: RuCl2(H2IMes)(=CHAr), Ar = C6H4-2-OiPr), slow salt… read more here.
Keywords: efficient halide; lability; halide exchange; iodide ... See more keywords