Academic literature on the topic 'Olefin CM'

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Journal articles on the topic "Olefin CM"

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Bahri-Laleh, Naeimeh, Raffaele Credendino, and Luigi Cavallo. "The intriguing modeling of cis–trans selectivity in ruthenium-catalyzed olefin metathesis." Beilstein Journal of Organic Chemistry 7 (January 11, 2011): 40–45. http://dx.doi.org/10.3762/bjoc.7.7.

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In this study we have investigated computationally the origin of the cis–trans selectivity in the Ru-catalyzed cross metathesis (CM) of a prototype monosubstituted olefin, i.e., propene. Our calculations suggest that the origin of the preferential formation of trans-olefins is in the product release step, which prevents the initially formed cis-olefin from escaping the metal, and returns it to the reaction pool until the trans-olefin is formed.
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Astruc, Didier, Abdou K. Diallo, Sylvain Gatard, et al. "Olefin metathesis in nano-sized systems." Beilstein Journal of Organic Chemistry 7 (January 19, 2011): 94–103. http://dx.doi.org/10.3762/bjoc.7.13.

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The interplay between olefin metathesis and dendrimers and other nano systems is addressed in this mini review mostly based on the authors’ own contributions over the last decade. Two subjects are presented and discussed: (i) The catalysis of olefin metathesis by dendritic nano-catalysts via either covalent attachment (ROMP) or, more usefully, dendrimer encapsulation – ring closing metathesis (RCM), cross metathesis (CM), enyne metathesis reactions (EYM) – for reactions in water without a co-solvent and (ii) construction and functionalization of dendrimers by CM reactions.
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Żak, Patrycja, and Cezary Pietraszuk. "Application of olefin metathesis in the synthesis of functionalized polyhedral oligomeric silsesquioxanes (POSS) and POSS-containing polymeric materials." Beilstein Journal of Organic Chemistry 15 (February 4, 2019): 310–32. http://dx.doi.org/10.3762/bjoc.15.28.

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This mini-review summarizes the applications of olefin metathesis in synthesis and functionalization of polyhedral oligomeric silsesquioxanes (POSS) and POSS-containing polymeric materials. Three types of processes, i.e., cross metathesis (CM) of vinyl-substituted POSS with terminal olefins, acyclic diene metathesis (ADMET) copolymerization of divinyl-substituted POSS with α,ω-dienes and ring-opening metathesis polymerization (ROMP) of POSS-substituted norbornene (or other ROMP susceptible cycloolefins) are discussed. Emphasis was put on the synthetic and catalytic aspects rather than on the p
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Benke, Zsanett, Attila M. Remete, and Loránd Kiss. "A study on selective transformation of norbornadiene into fluorinated cyclopentane-fused isoxazolines." Beilstein Journal of Organic Chemistry 17 (August 13, 2021): 2051–66. http://dx.doi.org/10.3762/bjoc.17.132.

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This work presents an examination of the selective functionalization of norbornadiene through nitrile oxide 1,3-dipolar cycloaddition/ring-opening metathesis (ROM)/cross-metathesis (CM) protocols. Functionalization of commercially available norbornadiene provided novel bicyclic scaffolds with multiple stereogenic centers. The synthesis involved selective cycloadditions, with subsequent ROM of the formed cycloalkene-fused isoxazoline scaffolds and selective CM by chemodifferentiation of the olefin bonds of the resulting alkenylated derivatives. Various experimental conditions were applied for t
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Dong, Yifan, Laura I. Mosquera-Giraldo, Lynne S. Taylor, and Kevin J. Edgar. "Tandem modification of amphiphilic cellulose ethers for amorphous solid dispersion via olefin cross-metathesis and thiol-Michael addition." Polymer Chemistry 8, no. 20 (2017): 3129–39. http://dx.doi.org/10.1039/c7py00228a.

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Dong, Yifan, Laura I. Mosquera-Giraldo, Jacob Troutman, Brittny Skogstad, Lynne S. Taylor, and Kevin J. Edgar. "Amphiphilic hydroxyalkyl cellulose derivatives for amorphous solid dispersion prepared by olefin cross-metathesis." Polymer Chemistry 7, no. 30 (2016): 4953–63. http://dx.doi.org/10.1039/c6py00960c.

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Dong, Yifan, and Kevin J. Edgar. "Imparting functional variety to cellulose ethers via olefin cross-metathesis." Polymer Chemistry 6, no. 20 (2015): 3816–27. http://dx.doi.org/10.1039/c5py00369e.

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Awang, Nor Wahida, Ken Tsutsumi, Barbora Huštáková, Siti Fairus M. Yusoff, Kotohiro Nomura, and Bohari M. Yamin. "Cross metathesis of methyl oleate (MO) with terminal, internal olefins by ruthenium catalysts: factors affecting the efficient MO conversion and the selectivity." RSC Advances 6, no. 103 (2016): 100925–30. http://dx.doi.org/10.1039/c6ra24200f.

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Cross metathesis (CM) of methyl oleate (MO) with cis-4-octene, cis-stilbene, allyltrimethylsilane by RuCl<sub>2</sub>(PCy<sub>3</sub>)(IMesH<sub>2</sub>)(CHPh) yielded CM products with high MO conversion, high selectivity; the effect of olefin substituents, conditions was explored.
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Rusin, Aleksandra, Maciej Chrubasik, Katarzyna Papaj, Grzegorz Grynkiewicz, and Wiesław Szeja. "C-Glycosidic Genistein Conjugates and Their Antiproliferative Activity." Journal of Chemistry 2013 (2013): 1–14. http://dx.doi.org/10.1155/2013/951392.

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This paper presents our attempt to investigate scopes and the limitations of olefin cross-metathesis (CM) reaction in the synthesis of complex C-glycosides of genistein and evaluation of their antiproliferative activities. Novel genistein glycoconjugates were synthesized with the utility of CM reaction initiated by first and second generation of Grubbs catalysts. The relative reactivity of utilized olefins, based on categories proposed by Grubbs, was estimated.In vitroexperiments in cancer cell lines showed that the selected derivatives (3aand3f) exhibited higher antiproliferative potential th
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Patrzałek, Michał, Aleksandra Zasada, Anna Kajetanowicz та Karol Grela. "Tandem Olefin Metathesis/α-Ketohydroxylation Revisited". Catalysts 11, № 6 (2021): 719. http://dx.doi.org/10.3390/catal11060719.

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EWG-activated and polar quaternary ammonium salt-tagged ruthenium metathesis catalysts have been applied in a two-step one-pot metathesis-oxidation process leading to functionalized α-hydroxyketones (acyloins). In this assisted tandem process, the metathesis catalyst is used first to promote ring-closing metathesis (RCM) and cross-metathesis (CM) steps, then upon the action of Oxone™ converts into an oxidation catalyst able to transform the newly formed olefinic product into acyloin under mild conditions.
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Dissertations / Theses on the topic "Olefin CM"

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Sinclair, Fern. "Modification of poly(lactic acid) via olefin cross-metathesis." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28896.

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Poly(lactic acid), PLA, is a viable replacement to petroleum derived polymers due to its renewable feedstock, biodegradability and bioassimilability, yet improvements in its physical, thermal and mechanical properties are required before it can fully enter all commodity markets. This thesis investigates olefin cross-metathesis (CM) as a synthetic strategy to modify the properties of PLA. The use of novel lanthanide and actinide catalysts on the microstructure control of PLA are also explored. The Tebbe reagent was used in a new synthetic strategy to produce a novel olefin derivative of lactide
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Conference papers on the topic "Olefin CM"

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Bolotov, Vasiliy Alexandrovich, Serguei Fedorovich Tikhov, Konstantin Radikovich Valeev, Vladimir Timurovich Shamirzaev, and Valentin Nikolaevich Parmon. "SELECTIVE FORMATION OF LINEAR ALPHA-OLEFINS VIA MICROWAVE CATALYTIC CRACKING OF LIQUID STRAIGHT-CHAIN ALKANES." In Ampere 2019. Universitat Politècnica de València, 2019. http://dx.doi.org/10.4995/ampere2019.2019.9894.

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Linear even-carbon-number alpha-olefins (LAO) with four or more carbon atoms are important compounds of high demand in chemical industry as precursors of a wide range of value-added chemicals [1]. LAO are used as co-monomers for polyethylene production, for the production of alcohols (mainly in detergents and plasticizers) and for synthesis of polyalphaolefins (used in synthetic lubricants). Alpha-olefins (C4, C6, C8 and C10) are mainly used to produce poly(vinyl chloride) plasticizers, high-density and linear low-density polyethylene to impart the stress-crack resistance. C10–C14 alpha-olefin
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