- Preparation method of bio-derived isobornyl (meth) acrylate
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The invention belongs to the technical field of photocatalytic organic synthesis, and discloses a preparation method of bio-derived isobornyl (meth) acrylate. The method comprises the following steps:adding camphene, (methyl) acrylic acid, a polymerization inhibitor and a catalyst into a transparent reactor, uniformly mixing, placing under UV light irradiation, carrying out a stirring reaction, and carrying out reduced pressure rotary evaporation after the reaction is finished to obtain isobornyl acrylate and isobornyl methacrylate. According to the method, isobornyl (meth) acrylate is prepared by adopting a photocatalysis method, wherein the reaction conditions are mild, the reaction time is short, side reactions and byproducts are avoided, the conditions of high temperature, high pressure and the like are not needed, the separation and purification are simple and easy to operate, and the isobornyl (meth) acrylate can be obtained. According to the invention, isobornyl (meth) acrylateis prepared from a natural renewable resource camphene, so that a new application direction is opened up for the natural renewable resource vegetable oil, the economic value of the vegetable oil is improved, and the method has a good popularization effect on the development of agriculture and forestry economy.
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Paragraph 0029-0032; 0037-0040; 0045-0048
(2021/01/15)
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- Metal-free transesterification catalyzed by tetramethylammonium methyl carbonate
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Environmentally benign metal-free tetramethylammonium methyl carbonate is effective as a catalyst for the chemoselective, scalable, and reusable transesterification of various esters and alcohols in common organic solvents. In situ-generated highly active species, tetramethylammonium alkoxides, can greatly avoid self-decomposition at ≤110 °C, and are reusable. In particular, chelating substrates, such as amino alcohols, diols, triols, sugar derivatives, alkaloids, α-amino acid esters, etc., which deactivate conventional metal salt catalysts, can be used. A 100 gram scale biodiesel production was also demonstrated.
- Hatano, Manabu,Tabata, Yuji,Yoshida, Yurika,Toh, Kohei,Yamashita, Kenji,Ogura, Yoshihiro,Ishihara, Kazuaki
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supporting information
p. 1193 - 1198
(2018/03/27)
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- Acrylate monomer preparation using alkali metal alkoxides as ester interchange catalysts
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The present invention relates to a process to prepare alkyl (meth)acrylate esters from corresponding alkyl/methacrylate esters using an alkali metal alkoxide as an ester interchange catalyst to produce an alkyl (meth)acrylate ester monomer product C The present invention further relates to the use of bromide and iodide salts as free radical polymerization inhibitors. The present invention further relates to the use of a noninterfering alcohol or polyol that prevents anionic polymerization reactions of reactant ester B and/or alkyl (meth)acrylate product C. The present invention further relates to a process for inhibiting polymerization of (meth)acrylates being synthesized in a transesterification or ester-ester interchange reaction system
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- Method for synthesis and process inhibition of isobornyl (meth)acrylate
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Isobornyl (meth)acrylate is synthesized by a two-stage one-pot process, wherein isobornyl acetate is converted to isoborneol followed by transesterification with (meth)acrylic acid methyl ester, without isolation of the intermediates or purification of the product.
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- Engineering reactions in crystalline solids: Radical pairs in crystals of dialkyl 1,3-acetonedicarboxylates
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(Equation presented) Crystalline dialkyl 1,3-acetonedicarboxylates give dialkyl succinates in high chemical yields by combination of α-carbonyl radical pairs produced by photochemical decarbonylation. It is proposed that the solid-state reaction depends on the exothermicity of two consecutive bond cleavage processes. It is also suggested that the efficiency of radical formation in the solid state is determined by the effect of substituents on bond dissociation energies and radical-stabilization abilities.
- Yang, Zhe,Garcia-Garibay, Miguel A.
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p. 1963 - 1965
(2007/10/03)
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- Acrylate monomer preparation using alkali metal alkoxides as ester interchange catalysts and bromide salt polymerization inhibitors
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The present invention relates to a process to prepare alkyl (meth)acrylate esters from corresponding alkyl/methacrylate esters using an alkali metal alkoxide as an ester interchange catalyst to produce an alkyl (meth)acrylate ester monomer product C STR1 The present invention further relates to the use of bromide and iodide salts as free radical polymerization inhibitors. The present invention further relates to the use of a noninterfering alcohol or polyol that prevents anionic polymerization reactions of reactant ester B and/or alkyl (meth)acrylate product C. The present invention further relates to a process for inhibiting polymerization of (meth)acrylates being synthesized in a transesterification or ester-ester interchange reaction system.
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- Process for the preparation of isobornyl (meth) acrylate
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This process for the preparation of isobornyl (meth)acrylate by reaction of (meth)acrylic acid with camphene consists in blending the reactants in a blending tank and in placing the mixture in contact with the catalyst in a cartridge which is separate from the blending tank. Single figure.
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- Method of manufacturing isobornyl (meth)acrylate
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The subject invention pertains to a method of manufacturing isobornyl acrylate or isobornyl methacrylate by reacting camphene with acrylic acid or methacrylic acid, respectively, in the presence of a molybdenum heteropolyacid as a catalyst.
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- Disinfectant polymeric coatings for hard surfaces
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Liquid disinfectant compositions are disclosed which can be used to surface-coat substrates with polymeric films which are adherent, water-resistant and which can impart prolonged germicidal properties to the treated surfaces.
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