2144-53-8Relevant articles and documents
Synthesis of fluorinated block copolymers and their application as novel polymerisation surfactants in supercritical carbon dioxide
Yong, Tuck-Mun,Hems, William P.,Van Nunen, Johanna L. M.,Holmes, Andrew B.,Steinke, Joachim H. G.,Taylor, Philip L.,Segal, John A.,Griffin, David A.
, p. 1811 - 1812 (1997)
Screened anionic copolymerisation of methyl methacrylate with the perfluoroalkyl methacrylates 2 affords well-defined AB block copolymers 4-6, which serve as effective surfactants in the dispersion polymerisation of methyl methacrylate in supercritical carbon dioxide.
METHOD FOR PRODUCING FLUORINE-CONTAINING (METH) ACRYLATE
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Paragraph 0043-0047; 0059, (2021/03/13)
To provide a method for producing fluorine-containing (meth) acrylate that allows a reaction to proceed under a mild condition and can be conducted conveniently and industrially.SOLUTION: A method for producing a fluorine-containing (meth) acrylate includes a process in which: a fluorine-containing alkyl iodide represented by general formula (1) and a (meth) acrylic acid metal salt are reacted with each other in a mixed solvent of organic solvent and water in the presence of a phase transfer catalyst. Rf-(CH2)n-I (1) (where, Rf is a C1-16 fluorinated aliphatic hydrocarbon group, n is an integer of 1-4).SELECTED DRAWING: None
Cyanide-Free One-Pot Synthesis of Methacrylic Esters from Acetone
Koyama, Minoru,Kawakami, Takafumi,Okazoe, Takashi,Nozaki, Kyoko
, p. 10913 - 10917 (2019/08/02)
Methacrylic esters, represented by methyl methacrylate (MMA), are widely used as commodity chemicals. Here, the one-pot synthesis of methacrylic esters from acetone, a haloform and alcohols in the presence of an organic base is described. Using DBU as the organic base for the reaction of acetone, chloroform and methanol in acetonitrile afforded MMA in 66 % yield. When the solvent was replaced by benzonitrile, the product MMA was successfully purified by distillation. Applicability of this process to various alcohols was also investigated to show ethyl, phenyl, CF3CH2, and n-C6F13CH2CH2 esters were obtained in moderate yields. The use of bromoform instead of chloroform resulted in the improvement of the yield, for example, methyl and n-C6F13CH2CH2 esters up to 81 and 70 %, respectively. The reaction with deuterated starting materials acetone-d6 and MeOH-d4, with DBU in acetonitrile afforded deuterated MMA (MMA-d8) in 70 % yield.
Dehydrogenative Silylation of Alkenes for the Synthesis of Substituted Allylsilanes by Photoredox, Hydrogen-Atom Transfer, and Cobalt Catalysis
Yu, Wan-Lei,Luo, Yong-Chun,Yan, Lei,Liu, Dan,Wang, Zhu-Yin,Xu, Peng-Fei
supporting information, p. 10941 - 10945 (2019/07/17)
A synergistic catalytic method combining photoredox catalysis, hydrogen-atom transfer, and proton-reduction catalysis for the dehydrogenative silylation of alkenes was developed. With this approach, a highly concise route to substituted allylsilanes has been achieved under very mild reaction conditions without using oxidants. This transformation features good to excellent yields, operational simplicity, and high atom economy. Based on control experiments, a possible reaction mechanism is proposed.
METHOD FOR PRODUCING UNSATURATED ACID AND/OR UNSATURATED ACID ESTER
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Paragraph 0110-0111, (2015/07/02)
The present invention relates to a method for producing an unsaturated acid and/or an unsaturated acid ester, containing a process A of reacting a compound (1) represented by the following formula (1) at a temperature of 0° C. to 350° C. in the presence of a Br?nsted acid catalyst and/or a Lewis acid catalyst, to prepare a compound (2) represented by the following formula (2); in which each of R1, R2 and R4 independently represents a hydrogen atom, a deuterium atom or an alkyl group; each of R3 and R5 independently represents a hydrogen atom or a deuterium atom; R6 represents a hydrogen atom, a deuterium atom, or an alkyl group or an aryl group; and X represents a chlorine atom, a fluorine atom, a bromine atom, or an iodine atom.
PROCESS FOR PRODUCING ESTER COMPOUND
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Page/Page column 15, (2010/12/31)
PROBLEM To provide an environmentally-friendly method for producing industrially an ester compound. SOLUTION The present invention is a method for producing an ester compound which comprises subjecting a carboxylic acid and an alcohol to dehydration-condensation reaction using an involatile acid catalyst and then removing the residual acid catalyst by bringing a weak basic substance into contact with the residual acid catalyst.
Process for producing a polyfluoroalkyl (meth)acrylate
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Page 5; 6, (2008/06/13)
A process for producing a polyfluoroalkyl (meth)acrylate, which comprises isolating, from a reaction mixture containing a polyfluoroalkyl (meth)acrylate obtained by reacting a polyfluoroalkyl iodide of the formula CnF2n+1(CH2)mI (wherein n is an integer of from 2 to 7, and m is an integer of from 1 to 4) with a metal (meth)acrylate in tert-butanol, said polyfluoroalkyl (meth)acrylate by the following steps (1) to (3):(1) a step of taking out a crude liquid from the reaction mixture by solid-liquid separation;(2) a step of distilling the crude liquid to separate it into compound group A of compounds having a lower boiling point than the polyfluoroalkyl (meth)acrylate and compound group B of the polyfluoroalkyl (meth)acrylate and compounds having a higher boiling point than the polyfluoroalkyl (meth)acrylate; and(3) a step of distilling and purifying the polyfluoroalkyl (meth)acrylate from the compound group B in the presence of a polymerization inhibitor.
Synthesis and characterization of semifluorinated polymers via group transfer polymerization
Krupers, Maarten J.,Moeller, Martin
, p. 119 - 124 (2007/10/03)
Group transfer polymerization (GTP) was used to prepare semifluorinated polymers based on acrylic and methacrylic monomers. In the first case, electrophilic catalyzed GTP was applied with 1-methoxy-2-methyl-1-trimethylsilyloxy-1-propene (MMTP) as initiator, zinc iodide as catalyst and 1H,1H,2H,2H-perfluorooctyl acrylate as monomer. In this way it has been possible to obtain oligomers. Higher molecular weight polymers were prepared by means of the nucleophilic tetrabutylammonium benzoate as catalyst. With MMTP as initiator, 1H,1H,2H,2H-perfluoroalkyl methacrylates, F(CF2)m(CH2)2OCOC(CH3)=CH2, were polymerized to molecular weights > 4.5 kg mol-1. The polydispersity was found to depend strongly on the length of the perfuoroalkyl side chain, i.e. Mw/Mn decreases with increasing m.