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Journal articles on the topic 'Vinyl ether'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Štěpánek, Petr, Ondřej Vích, Lukáš Werner, Ladislav Kniežo, Hana Dvořáková, and Pavel Vojtíšek. "Stereoselective Preparation of Precursors of α-C-(1→3)-Disaccharides." Collection of Czechoslovak Chemical Communications 70, no. 9 (2005): 1411–28. http://dx.doi.org/10.1135/cccc20051411.

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The stereoselectivity of cycloaddition of sugar-containing substituted 1-(thiazol-2-yl)but-2-en-1-ones 1 and vinyl ethers was studied using the achiral vinyl ether/chiral catalyst as well as the chiral vinyl ether/achiral catalyst combinations. It has been shown that Eu(fod)3-catalyzed cycloaddition of oxadienes 1a-1e with the chiral vinyl ethers 9 and 10 affords stereoselectively almost pure cycloadducts 11a-11e and 12a-12e, respectively. The obtained cycloadducts are suitable precursors for the synthesis of α-C-(1→3)-disaccharides, containing 2-deoxy-arabino-hexopyranose moiety of D- or L-configuration.

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2

Zhang, Jinghan, Yibo Wu, Kaixuan Chen, Min Zhang, Liangfa Gong, Dan Yang, Shuxin Li, and Wenli Guo. "Characteristics and Mechanism of Vinyl Ether Cationic Polymerization in Aqueous Media Initiated by Alcohol/B(C6F5)3/Et2O." Polymers 11, no. 3 (March 14, 2019): 500. http://dx.doi.org/10.3390/polym11030500.

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Aqueous cationic polymerizations of vinyl ethers (isobutyl vinyl ether (IBVE), 2-chloroethyl vinyl ether (CEVE), and n-butyl vinyl ether (n-BVE)) were performed for the first time by a CumOH/B(C6F5)3/Et2O initiating system in an air atmosphere. The polymerization proceeded in a reproducible manner through the careful design of experimental conditions (adding initiator, co-solvents, and surfactant or decreasing the reaction temperature), and the polymerization characteristics were systematically tested and compared in the suspension and emulsion. The significant difference with traditional cationic polymerization is that the polymerization rate in aqueous media using B(C6F5)3/Et2O as a co-initiator decreases when the temperature is lowered. The polymerization sites are located on the monomer/water surface. Density functional theory (DFT) was applied to investigate the competition between H2O and alcohol combined with B(C6F5)3 for providing a theoretical basis. The effectiveness of the proposed mechanism for the aqueous cationic polymerization of vinyl ethers using CumOH/B(C6F5)3/Et2O was confirmed.

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3

González-Belman, Oscar, Artur Brotons-Rufes, Michele Tomasini, Laura Falivene, Lucia Caporaso, Jose Jiménez-Halla, and Albert Poater. "Towards Dual-Metal Catalyzed Hydroalkoxylation of Alkynes." Catalysts 11, no. 6 (June 2, 2021): 704. http://dx.doi.org/10.3390/catal11060704.

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Poly (vinyl ethers) are compounds with great value in the coating industry due to exhibiting properties such as high viscosity, soft adhesiveness, resistance to saponification and solubility in water and organic solvents. However, the main challenge in this field is the synthesis of vinyl ether monomers that can be synthetized by methodologies such as vinyl transfer, reduction of vinyl phosphate ether, isomerization, hydrogenation of acetylenic ethers, elimination, addition of alcohols to alkyne species etc. Nevertheless, the most successful strategy to access to vinyl ether derivatives is the addition of alcohols to alkynes catalyzed by transition metals such as molybdenum, tungsten, ruthenium, palladium, platinum, gold, silver, iridium and rhodium, where gold-NHC catalysts have shown the best results in vinyl ether synthesis. Recently, the hydrophenoxylation reaction was found to proceed through a digold-assisted process where the species that determine the rate of the reaction are PhO-[Au(IPr)] and alkyne-[Au(IPr)]. Later, the improvement of the hydrophenoxylation reaction by using a mixed combination of Cu-NHC and Au-NHC catalysts was also reported. DFT studies confirmed a cost-effective method for the hydrophenoxylation reaction and located the rate-determining step, which turned out to be quite sensitive to the sterical hindrance due to the NHC ligands.

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4

Namikoshi, Takeshi, Tamotsu Hashimoto, Yuka Suzuki, Michio Urushisaki, and Toshikazu Sakaguchi. "Synthesis of poly(vinyl ether) optical plastics by cationic copolymerization of tricyclodecane vinyl ether with functionalized vinyl ethers." Journal of Applied Polymer Science 126, S2 (April 11, 2012): E307—E314. http://dx.doi.org/10.1002/app.36973.

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5

Nuyken, Oskar, and Stefan Ingrisch. "Block copolymers from isobutyl vinyl ether and 2-chloroethyl vinyl ether." Macromolecular Chemistry and Physics 199, no. 4 (April 1, 1998): 607–12. http://dx.doi.org/10.1002/(sici)1521-3935(19980401)199:4<607::aid-macp607>3.0.co;2-5.

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6

Bouchekif, H., A. I. Sulhami, R. D. Alghamdi, Y. Gnanou, and N. Hadjichristidis. "Triblock and pentablock terpolymers by sequential base-assisted living cationic copolymerization of functionalized vinyl ethers." Polymer Chemistry 6, no. 8 (2015): 1236–47. http://dx.doi.org/10.1039/c4py01728e.

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A series of novel, well-defined triblock and pentablock terpolymers of n-butyl vinyl ether (nBVE), 2-chloroethyl vinyl ether (CEVE) and tert-butyldimethylsilyl ethylene glycol vinyl ether (SiEGVE) were synthesized by sequential base-assisted living cationic polymerization.

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7

Ollevier, Thierry, and Topwe M. Mwene-Mbeja. "Diastereoselective bismuth triflate catalyzed Claisen rearrangement of 2-alkoxycarbonyl-substituted allyl vinyl ethers." Canadian Journal of Chemistry 86, no. 3 (March 1, 2008): 209–12. http://dx.doi.org/10.1139/v07-149.

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In the presence of a catalytic amount of bismuth triflate, 2-alkoxycarbonyl-substituted allyl vinyl ethers as a mixture of enol ether double bond isomers were smoothly converted into the β,γ-alkyl-substituted α-keto esters. The isomerization reaction proceeded rapidly to afford smoothly the α-keto esters in good to excellent yields using catalytic amounts of Bi(OTf)3·4H2O (1 mol%). (Z,Z)-2-iso-Propyloxycarbonyl-substituted allyl vinyl ethers 3Z,Z afforded the corresponding β,γ-alkyl-substituted α-keto esters 4 with very good syn diastereoselectivity.Key words: bismuth; bismuth(III) triflate; Claisen rearrangement; allyl vinyl ethers.

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8

YUMINOV, V. S. "ChemInform Abstract: Polyfluoroalkyl Vinyl Ethers. Part 2. Synthesis of Perfluorocyclohexylmethyl Vinyl Ether." ChemInform 27, no. 22 (August 5, 2010): no. http://dx.doi.org/10.1002/chin.199622098.

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9

Namikoshi, Takeshi, Tamotsu Hashimoto, and Michio Urushisaki. "Synthesis of poly(vinyl ether) plastics for optical use by cationic copolymerization of tricyclodecyl vinyl ether withn-butyl vinyl ether." Journal of Polymer Science Part A: Polymer Chemistry 45, no. 18 (2007): 4389–93. http://dx.doi.org/10.1002/pola.22205.

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10

Confortini, Ondine, and Filip E. Du Prez. "Functionalized Thermo-Responsive Poly(vinyl ether) by Living Cationic Random Copolymerization of Methyl Vinyl Ether and 2-Chloroethyl Vinyl Ether." Macromolecular Chemistry and Physics 208, no. 17 (September 5, 2007): 1871–82. http://dx.doi.org/10.1002/macp.200700205.

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11

Han, Dandan, Haijie Cao, Yanhui Sun, Ruilian Sun, and Maoxia He. "Mechanistic and kinetic study on the ozonolysis of n-butyl vinyl ether, i-butyl vinyl ether and t-butyl vinyl ether." Chemosphere 88, no. 10 (August 2012): 1235–40. http://dx.doi.org/10.1016/j.chemosphere.2012.03.078.

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12

Lievens, Serge S., and Eric J. Goethals. "Poly(methyl vinyl ether-b-octadecyl vinyl ether): a New Non-ionic Surfactant." Polymer International 41, no. 4 (December 1996): 437–41. http://dx.doi.org/10.1002/(sici)1097-0126(199612)41:4<437::aid-pi634>3.0.co;2-5.

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13

Jakoubková, Marie, and Josef Pola. "CO2 laser induced decomposition of propylene oxide." Collection of Czechoslovak Chemical Communications 55, no. 10 (1990): 2455–59. http://dx.doi.org/10.1135/cccc19902455.

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The continuous-wave (cw) CO2 laser induced decomposition of propylene oxide yields propanal, propanone and methyl vinyl ether as primary isomerization products. The absence of allylol and great amounts of ethene among products of ensuing fragmentation of primary products make the reaction different from conventional thermal decomposition of propylene oxide. CW CO2 laser induced decomposition of methyl vinyl ether affords propanal as isomerization product and shows thermal interconvertibility of propylene oxide and methyl vinyl ether.

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14

Kuang, Chen, Sahar Qavi, and Reza Foudazi. "Double-stage phase separation in dynamically asymmetric ternary polymer blends." RSC Advances 6, no. 94 (2016): 92104–14. http://dx.doi.org/10.1039/c6ra17274a.

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In this work, the phase separation behavior of ternary blends of polystyrene/poly(vinyl methyl ether)/polyisoprene, PS/PVME/PI, and polystyrene/poly(vinyl methyl ether)/poly(ethyl methacrylate), PS/PVME/PEMA are investigated.

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15

Lund, Elizabeth A., Isaac A. Kennedy, and Alex G. Fallis. "Dihydrofurans from α-diazoketones due to facile ring opening – cyclization of donor–acceptor cyclopropane intermediates." Canadian Journal of Chemistry 74, no. 12 (December 1, 1996): 2401–12. http://dx.doi.org/10.1139/v96-269.

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A series of α-diazoketones, 8, 25, 28, 31, and 34, have been synthesized and their reaction with ethyl vinyl ether examined under various reaction conditions. In the presence of metal salts (Rh2(OAc)4, Pd(OAc)2, CuCl) the ethoxy-dihydrofurans 12, 37, 39, 41, and 43 are produced. Sensitized irradiation of the α-diazoketone 8 afforded the dihydrofuran 12 plus cyclobutanone 7, while direct photolysis of α-diazoketones 8, 25, 28, 31, and 34 gave the cyclobutanones 7, 38,40,42, and 44, respectively. A sample of the cyclopropylketone 45 was isolated from the rhodium(II) acetate mediated reaction of 34 and its facile rearrangement to dihydrofuran 43 demonstrated. Collectively, these results indicate that the initial product from the reaction of an α-diazoketone with an electron-rich alkene such as ethyl vinyl ether is a cyclopropylketone. The donnor–acceptor substitution pattern of this intermediate results in spontaneous rearrangement to a dihydrofuran. Thus a direct dipolar cycloaddition mechanism is not involved when α-diazoketones react with enol ethers under metal-mediated conditions. Instead, these reactions follow a cyclopropanation rearrangement or, more accurately, cyclopropanation – ring opening – cyciization pathway. Key words: diazoketone, rhodium acetate, dihydrofuran, cyclopropylketone, vinyl ether.

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16

Merlic, Craig, David Winternheimer, and Ryan Shade. "Methods for Vinyl Ether Synthesis." Synthesis 2010, no. 15 (July 12, 2010): 2497–511. http://dx.doi.org/10.1055/s-0030-1258166.

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17

Zhang, Hongmin, and Eli Ruckenstein. "Dendritic polymers from vinyl ether." Polymer Bulletin 39, no. 4 (October 1997): 399–406. http://dx.doi.org/10.1007/s002890050165.

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18

Okamoto, Yoshihisa, Philip Klemarczyk, and Susan Levandoski. "Novel vinyl ether thermosetting resins." Polymer 34, no. 4 (February 1993): 691–95. http://dx.doi.org/10.1016/0032-3861(93)90349-f.

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19

K. Boeckman, Jr., Robert, Jayaram R. Tagat, and Brian H. Johnston. "The Chemistry of Cyclic Vinyl Ethers 4: Cyclization of Unsaturated Cyclic Vinyl Ether Epoxides." HETEROCYCLES 25, no. 1 (1987): 33. http://dx.doi.org/10.3987/s-1987-01-0033.

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20

Guo, Kun Peng, Bo Liu, Gui Xing Jian, Hong Jiang, and Wu Biao Duan. "Study on Application of Vinyl Methyl Ether in MTO Reaction." Advanced Materials Research 830 (October 2013): 306–9. http://dx.doi.org/10.4028/www.scientific.net/amr.830.306.

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MTO is the core technology of the coal-to-olefins process. Vinyl methyl ether was added to the reaction feed to investigate the infulence of methoxy group concentration in MTO reaction. Several series of metal-modified ZSM-5 were synthesized to investigate the effect of metal element in the progress methoxy group involved. The reaction results indicated that both the addition of vinyl methyl ether and the metal modification on catalyst led to an increase in C2~C3 olefins yield. The highest C2~C3 olefins yield was obtained using methanol with 5wt% vinyl methyl ether as feed and ZSM-5 with 3wt% Ba modified as catalyst.

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21

Kresge, A. J., and M. Leibovitch. "Vinyl ether hydrolysis. XXIII. Solvent isotope effect on the reaction of divinyl ether catalyzed by the hydronium ion." Canadian Journal of Chemistry 68, no. 12 (December 1, 1990): 2129–30. http://dx.doi.org/10.1139/v90-326.

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Rates of hydrolysis of divinyl ether (CH2=CHOCH=CH2), measured in dilute H2O and D2O solutions of perchloric acid at 25 °C, provide the catalytic coefficients kH+ = 0.0084 M−1 s−1 and kD+ = 0.0028 M−1 s−1, and these lead to the isotope effect kH/kD = 3.0. The magnitude of this isotope effect indicates that this reaction occurs by rate-determining hydron transfer from catalyst to substrate and thus follows the conventional mechanism for vinyl ether hydrolysis. Keywords: divinyl ether, vinyl ether hydrolysis, solvent isotope effect.

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22

Jones, J., and A. J. Kresge. "Vinyl ether hydrolysis XXVIII. The mechanism of reaction of methyl α-(2,6-dimethoxyphenyl)vinyl ether." Canadian Journal of Chemistry 71, no. 1 (January 1, 1993): 38–41. http://dx.doi.org/10.1139/v93-006.

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The acid-catalyzed hydrolysis of methyl α-(2,6-dimethoxyphenyl)vinyl ether in aqueous solution at 25 °C occurs with the hydronium ion catalytic coefficient [Formula: see text] and gives the solvent isotope effect [Formula: see text] this indicates that reaction occurs by rate-determining proton transfer from the catalyst to the substrate to generate an alkoxycarbocation intermediate. An oxygen-18 tracer study shows further that, despite the steric hindrance provided by its two ortho substituents, this cation then reacts by addition of water to the cationic carbon atom to generate a hemiacetal, and not by nucleophilic attack of water on the methyl group remote from the carbocationic center:[Formula: see text]

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23

Li, Ming, Li-fen Zhang, Mei-xia Tao, Zhen-ping Cheng, and Xiu-lin Zhu. "Photo-induced living cationic copolymerization of isobutyl vinyl ether and vinyl ether with carbazolyl groups." Chinese Journal of Polymer Science 32, no. 11 (September 25, 2014): 1564–74. http://dx.doi.org/10.1007/s10118-014-1540-8.

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24

Han, Dandan, Haijie Cao, Yanhui Sun, and Maoxia He. "Mechanistic and kinetic study on the ozonolysis of ethyl vinyl ether and propyl vinyl ether." Structural Chemistry 23, no. 2 (October 20, 2011): 499–514. http://dx.doi.org/10.1007/s11224-011-9899-4.

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25

Verdonck, Beatrice, Eric J. Goethals, and Filip E. Du Prez. "Block Copolymers of Methyl Vinyl Ether and Isobutyl Vinyl Ether With Thermo-Adjustable Amphiphilic Properties." Macromolecular Chemistry and Physics 204, no. 17 (November 2003): 2090–98. http://dx.doi.org/10.1002/macp.200350069.

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26

Hashimoto, Tamotsu, Takeshi Namikoshi, Satoshi Irie, Michio Urushisaki, Toshikazu Sakaguchi, Takashi Nemoto, and Seiji Isoda. "Synthesis and microphase-separated structure of poly(tricyclodecyl vinyl ether)-block-poly(n-butyl vinyl ether)-block-poly(tricyclodecyl vinyl ether): New triblock copolymer as thermoplastic elastomer composed solely of poly(vinyl ether) backbones." Journal of Polymer Science Part A: Polymer Chemistry 46, no. 5 (2008): 1902–6. http://dx.doi.org/10.1002/pola.22503.

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27

Bongiovanni, R., M. Sangermano, G. Malucelli, A. Priola, A. Leonardi, B. Ameduri, A. Pollicino, and A. Recca. "Fluorinated vinyl ethers as new surface agents in the photocationic polymerization of vinyl ether resins." Journal of Polymer Science Part A: Polymer Chemistry 41, no. 18 (August 4, 2003): 2890–97. http://dx.doi.org/10.1002/pola.10896.

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28

SASANO, Mikio, and Tadatomi NISHIKUBO. "Selective polymerization of glycidyl vinyl ether." KOBUNSHI RONBUNSHU 47, no. 7 (1990): 597–604. http://dx.doi.org/10.1295/koron.47.597.

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29

Wang, Lei, Maofa Ge, and Weigang Wang. "Kinetic study of the reactions of chlorine atoms with ethyl vinyl ether and propyl vinyl ether." Chemical Physics Letters 473, no. 1-3 (April 2009): 30–33. http://dx.doi.org/10.1016/j.cplett.2009.03.047.

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30

Nurkeeva, Zauresh S., Al-Sayed Abdel Aal, Vitaliy V. Khutoryanskiy, Grigoriy A. Mun, and Aida G. Beksyrgaeva. "Radiation grafting from binary monomer mixtures. I. Vinyl ether of monoethanolamine and vinyl ether of ethyleneglycol." Radiation Physics and Chemistry 67, no. 6 (August 2003): 717–22. http://dx.doi.org/10.1016/s0969-806x(03)00149-x.

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31

Jabbari, Esmaiel, and Nikolaos A. Peppas. "Comparison of interdiffusion at polystyrene–poly(vinyl methyl ether) and polystyrene–poly(isobutyl vinyl ether) interfaces." Polymer International 38, no. 1 (September 1995): 65–69. http://dx.doi.org/10.1002/pi.1995.210380108.

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32

Laus, Michele, Maria Chiara Bignozzi, Marco Fagnani, Annino Sante Angeloni, Giancarlo Galli, Emo Chiellini, and Oriano Francescangeli. "Liquid Crystalline Poly(vinyl ether)s and Block Copoly(vinyl ether)s by Living Cationic Polymerization†." Macromolecules 29, no. 15 (January 1996): 5111–18. http://dx.doi.org/10.1021/ma951641v.

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33

Leppla, Cindy, Elena N. Rezanova, and Rüdiger N. Lichtenthaler. "Thermodynamic Excess Properties for Ternary Mixtures 1-Butanol + (Butyl Vinyl Ether or Isobutyl Vinyl Ether) + Heptane." Journal of Chemical & Engineering Data 45, no. 6 (November 2000): 1019–26. http://dx.doi.org/10.1021/je000135k.

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34

Liu, Bin, Jiangying Kuang, Leishan Shao, Xinyuan Che, Fei Wang, and Yinghan Wang. "Porous membranes based on poly(ether imide)-graft-poly(vinyl acetate) as a scaffold for cell growth." Journal of Bioactive and Compatible Polymers 33, no. 2 (August 18, 2017): 178–94. http://dx.doi.org/10.1177/0883911517723038.

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A series of poly(ether imide)-graft-poly(vinyl acetate) copolymers with different molecular weights were synthesized successfully and characterized using Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, proton nuclear magnetic resonance, gel permeation chromatography, differential scanning calorimeter, thermogravimetric analysis, and X-ray photoelectron spectroscopy analyses. These copolymers were used to fabricate honeycomb-structured porous films using the breath figure templating technique. The surface topology and composition of the highly ordered pattern film were further characterized using a scanning electron microscopy. The results indicated that the poly(ether imide)-graft-poly(vinyl acetate) graft molecular weight ratio influenced the breath figure film surface topology. A model was proposed to elucidate the stabilization process of the poly(ether imide)-graft-poly(vinyl acetate)-aggregated architecture on the water droplet–based templates. In addition, cell viability has been investigated via 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide test, and the cell morphology on the honeycomb-structured poly(ether imide)-graft-poly(vinyl acetate) porous film has been evaluated using a fluorescence microscope. This porous film is shown to be suitable as a matrix for cell growth.

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35

Liu, Di, and Christopher W. Bielawski. "Post-polymerization modification of poly(vinyl ether)s: a Ru-catalyzed oxidative synthesis of poly(vinyl ester)s and poly(propenyl ester)s." Polymer Chemistry 7, no. 1 (2016): 63–68. http://dx.doi.org/10.1039/c5py01409c.

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36

Pinhey, JT, and PT Xuan. "The Thermal ortho-Substitution of Phenols by Vinyl Ethers." Australian Journal of Chemistry 41, no. 1 (1988): 69. http://dx.doi.org/10.1071/ch9880069.

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Pyrolysis of a mixture of phenol and 3,4-dihydro-2H-pyran (6) at 150- 180°C resulted in the formation of 2-(tetrahydro-2H-pyran-2-yl)phenol (3a) in moderate yield. This selective ortho-substitution reaction has been investigated for a range of phenols and a number of vinyl ethers. While it was found to be a fairly general reaction for phenols, only with the vinyl ether (6) and 2,3-dihydrofuran (28a) was the reaction found to be regioselective. Aluminium phenylate strongly catalyses the reaction of phenol with (6), which proceeded under these conditions at room temperature. An ene -type mechanism is proposed for the reaction.

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37

Chiang, Yvonne, Robert Eliason, Gary H. X. Guo, and A. Jerry Kresge. "Vinyl ether hydrolysis. XXIX. 1-Methoxy-1,3-butadiene: reaction mechanism and implication for hydrolysis of the mutagen fecapentaene-12." Canadian Journal of Chemistry 72, no. 7 (July 1, 1994): 1632–36. http://dx.doi.org/10.1139/v94-205.

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The hydrolysis of cis- and trans-1-methoxy-1,3-butadiene in aqueous solution occurs by hydron transfer to the δ-carbon atom with little or no β-hydronation to give crotonaldehyde as essentially the sole aldehyde product. The reaction gives appreciable hydronium-ion isotope effects in the normal direction [Formula: see text] and shows general acid catalysis; five carboxylic acid catalytic coefficients for hydrolysis of the trans isomer give a good Brønsted relation with the exponent α = 0.59. This is taken as evidence that these reactions occur by the conventional mechanism for vinyl ether hydrolysis involving rate-determining hydron transfer to substrate carbon followed by rapid formation and decomposition of a hemiacetal intermediate. Comparison of the reactivity of the present dienyl ethers with that of their monoenyl analog, methyl vinyl ether, shows that introduction of the second double bond decreases reactivity considerably: the hydronium-ion catalytic coefficient is reduced by a factor of 8.3 for the trans isomer and by a factor of 160 for the cis isomer. This reduction supports a hypothesis advanced to explain the occurrence of reaction by a different mechanism recently discovered in the hydrolysis of the strongly mutagenic polyenyl ether, fecapentaene-12.

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38

He, Xin, Xin Wen, Ke Wu, and Haichao Liu. "Sustainable synthesis of vinyl methyl ether from biomass-derived ethylene glycol dimethyl ether over solid base catalysts." Green Chemistry 23, no. 17 (2021): 6625–31. http://dx.doi.org/10.1039/d1gc02277f.

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39

Caló, Enrica, Joao M. S. de Barros, Mar Fernández-Gutiérrez, Julio San Román, Lucy Ballamy, and Vitaliy V. Khutoryanskiy. "Antimicrobial hydrogels based on autoclaved poly(vinyl alcohol) and poly(methyl vinyl ether-alt-maleic anhydride) mixtures for wound care applications." RSC Advances 6, no. 60 (2016): 55211–19. http://dx.doi.org/10.1039/c6ra08234c.

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40

Piri, Farideh, Mina Behrouzi Fard Moghaddama, and Babak Karimi. "Palladium Catalyzed Reactions of 2-Nitroaniline with Vinylethers." E-Journal of Chemistry 4, no. 4 (2007): 519–22. http://dx.doi.org/10.1155/2007/962515.

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A new method for the synthesis of hemiaminal ether have been suggested. The reactions of 2-nitro aniline with vinyl ether in the presence of PdCl2(CH3CN)2produces hemiaminal ether compounds. The resulting products have been identified by spectral data.

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41

Qu, Chengke, Zhenhua Li, and Junpo He. "Synthesis of copolymers with an exact alternating sequence using the cationic polymerization of pre-sequenced monomers." Polymer Chemistry 9, no. 25 (2018): 3455–60. http://dx.doi.org/10.1039/c8py00626a.

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42

Verma, A., A. Nielsen, J. E. Mcgrath, and J. S. Riffle. "Synthesis of a Model Triblock for Novel Thermoplastic Elastomers." Rubber Chemistry and Technology 64, no. 4 (September 1, 1991): 601–9. http://dx.doi.org/10.5254/1.3538575.

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Abstract Thus far, we have been successful in preparing novel diblock and triblock copolymers comprised of poly(methyl methacrylate) and poly(butyl vinyl ether). Future work will focus on studying the morphology of both the diblock and triblock copolymers. Moreover, we are also interested in synthesizing triblocks with long poly(butyl vinyl ether) segments and short PMMA segments, since these polymers have the potential for exhibiting good elastomeric properties.

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43

Fujita, T., S. Watanabe, T. Sotoguchi, K. Ogawa, and K. Sugahara. "Reaction of 2-(6-Hydroxyspiro[4.5]Dec-6-Yl)-Alkanoic Acids With Aldehydes." Australian Journal of Chemistry 39, no. 5 (1986): 799. http://dx.doi.org/10.1071/ch9860799.

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The acid- catalysed reaction of aldehydes or ethyl vinyl ether with β- hydroxy acids containing a spiro ring is described. For example, 7,9- dioxadispiro [4.0.5.4]pentadecan-10-one was obtained in 90% yield from the reaction of (6-hydroxyspiro[4.5]dec-6-yl)acetic acid and 1,3,5- trioxan and 8-methyl-7,9-dioxadispiro[4.0.5.4]pentadecan-10-one was obtained in 72% yield from (6-hydroxyspiro[4.5]dec-6-yl)acetic acid and ethyl vinyl ether.

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44

Lubnin, Alexander V., and Joseph P. Kennedy. "Living carbocationic polymerization of isobutyl vinyl ether and the synthesis of poly[isobutylene-b-(isobutyl vinyl ether)]." Journal of Polymer Science Part A: Polymer Chemistry 31, no. 11 (October 1993): 2825–34. http://dx.doi.org/10.1002/pola.1993.080311120.

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Field, Nathan D., and Chi Li. "Conversion of solid poly(methyl vinyl ether-alt-maleimide) to poly(methyl vinyl ether-alt-maleic anhydride)." Journal of Polymer Science: Polymer Chemistry Edition 23, no. 7 (July 1985): 2017–22. http://dx.doi.org/10.1002/pol.1985.170230716.

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46

Vitale, Alessandra, Maëva Cominotti, Bruno Ameduri, and Roberta Bongiovanni. "Semi-interpenetrating polymer networks by cationic photopolymerization: Fluorinated vinyl ether chains in a hydrogenated vinyl ether network." European Polymer Journal 82 (September 2016): 122–31. http://dx.doi.org/10.1016/j.eurpolymj.2016.07.009.

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47

Finnveden, Maja, Sara Brännström, Mats Johansson, Eva Malmström, and Mats Martinelle. "Novel sustainable synthesis of vinyl ether ester building blocks, directly from carboxylic acids and the corresponding hydroxyl vinyl ether, and their photopolymerization." RSC Advances 8, no. 44 (2018): 24716–23. http://dx.doi.org/10.1039/c8ra04636k.

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48

Teator, A. J., and F. A. Leibfarth. "Catalyst-controlled stereoselective cationic polymerization of vinyl ethers." Science 363, no. 6434 (March 28, 2019): 1439–43. http://dx.doi.org/10.1126/science.aaw1703.

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Abstract:

The tacticity of vinyl polymers has a profound effect on their physical properties. Despite the well-developed stereoselective methods for the polymerization of propylene and other nonpolar α-olefins, stereoselective polymerization of polar vinyl monomers has proven more challenging. We have designed chiral counterions that systematically bias the reactivity and chain-end stereochemical environment during cationic polymerization. This approach overrides conventional chain-end stereochemical bias to achieve catalyst-controlled stereoselective polymerization. We demonstrate that this method is general to vinyl ether substrates, providing access to a range of isotactic poly(vinyl ether)s with high degrees of isotacticity. The obtained materials display the tensile properties of commercial polyolefins but adhere more strongly to polar substrates by an order of magnitude, indicating their promise for next-generation engineering applications.

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Julinda, Marisa, Taufik Sumarsongko, and Gian Nur Alamsyah. "Comparison of the retentive ability on incisal bite force between aloe vera and poly(methyl-vinyl-ether) adhesive materials in complete acrylic denture measured by modified pressure transducer." Padjadjaran Journal of Dentistry 33, no. 1 (March 31, 2021): 81. http://dx.doi.org/10.24198/pjd.vol33no1.23907.

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Abstract:

Introduction: Patients with acrylic complete denture, usually have a confidence issue in using their complete dentures to chew and speak, because of concern about detached of the denture from its place and pain on the alveolar ridge. Application denture adhesive material ordinarily can solve the problem. Mostly, denture adhesives in the market are made from synthetic material poly(methyl-vinyl-ether) but nowadays aloe vera extract is believed to be a substitute to synthetic denture adhesive material. The purpose of this study was to compare the retentive ability of the prothesis which applied incisal bite forces among the complete denture applied by denture adhesive poly(methyl-vinyl-ether), aloe vera extract and and without denture adhesive as control. Methods: This true-experimental research used 10 samples from patients who used acrylic complete denture and meet suitable criteria. Samples were tested in three different interventions, the first one applied by denture adhesive made from poly(methyl-vinyl-ether), the second one applied by denture adhesive made from aloe vera extract and the third one as a control group, sample was tested without any application of denture adhesive. Retentive ability on incisal bite forces was measured by modified pressure transducer with integrated software. Data was analysis using ANOVA method. Results: Anterior bite force as control 20,98 N, aloe vera 23,42 N, poly (methyl-vinyl-ether) 21,25 N and without denture adhesive as control. Significant differences in the incisal bite force dislodgement of dentures that were applied with Aloe vera-based denture adhesive s with p-value of 0.0088. Conclusion: Denture adhesive made from Aloe vera extract had the highest adhesiveness incisal bite force value compared to denture adhesive made from poly(methyl-vinyl-ether) and without denture adhesive.

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Shaikhutdinov, Y. M., S. Kh Khussain, N. Zh Seitkaliyeva, A. Zh Zhenissova, and Z. G. Akkulova. "Surface - Active and Complexforming Copolymers of Sodium 2-acrylamido-2-methylpropanesulfonate with Ethyleneglycol Vinyl Ether." Eurasian Chemico-Technological Journal 15, no. 4 (November 3, 2015): 313. http://dx.doi.org/10.18321/ectj237.

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Abstract:

<p>A new water-soluble polyelectrolyte - the copolymer of sodium 2-acrylamido-2-methylpropanesulfonate and ethylene glycol vinyl ether has been synthesized by free-radical copolymerization in aqueous medium. Synthesis of the linear structure water-soluble copolymer of sodium 2-acrylamido-2-methylpropanesulfonate (Na-AMPS) and ethylene glycol vinyl ether (EGVE) has been confirmed by IR spectroscopy method, potentiometric titration and viscometer. The concentration behavior of the reduced viscosity of copolymer solutions that is typical for polyelectrolytes has been revealed. The reactivity ratios for the copolymerization of the monomers estimated by the Mayo–Lewis method have indicated lower reactivity of ethylenglycol vinyl ether in comparison with sodium 2-acrylamido-2-methylpropanesulfonate. Also it was shown the decrease of reaction’s relative rate with an increase of molar fraction of EGVE in the initial mixture of monomers. Adsorption at the air-water solution interface was studied by measure of surface tension (σ) in order to determine the surface properties of new copolymers of ethyleneglycol vinyl ethers – sodium 2-acrylamido-2-methylpropanesulfonate. It was shown that copolymers of sodium 2-acrylamido-2-methylpropanesulfonate and ethylenglycol vinyl ether have higher surface activity compared to sodium 2-acrylamido-2-methylpropanesulfonate homopolymer. The isotherm of copolymer’s surface tension based on equilibrium value of σ was constructed together with the isotherm of surface tension water solution poly- Na-AMPS. Based on isotherms the surface activity on Rebinder (G<sub>Re</sub>) for poly- Na-AMPS and copolymer Na-AMPS-EGVE was determined. The values of polymer’s standard free energy of adsorption (Δ<sub>ads</sub>G<sup>0</sup><sub>298</sub>) were calculated in order to identify the causes and mechanism of change in surface activity and adsorption. Results show that the gain in standard free energy adsorption in the transition from homopolymer to copolymer Na-AMPS-EGVE is about 4 kJ/base-mole. Interpolymer reaction of the Na-AMS–EGVE copolymer with poly- <em>N,N</em>-dimethyl-<em>N,N</em>-diallylammonium chloride (PMAAC) has been studied. Higher surface activity of mixtures of copolymer and PMAAC than of individual polyelectrolytes was discovered. This effect testified to the formation of interpolymer complex of the Na-AMS–EGVE copolymer with polycations due to electrostatic interactions.</p>

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