760-93-0Relevant academic research and scientific papers
Synthesis of 2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl methacrylates
Krivonogov,Chernyshenko,Kozlova,Yakovleva,Spirikhin,Abdrakhmanov,Plechev,Sivkova,Battalov
, p. 141 - 143 (2005)
2,4-Dioxo-1,2,3,4-tetrahydropyrimidin-5yl methacrylates were synthesized for the first time by reaction of 5-hydroxyuracil derivatives with methacrylic anhydride. 5-Hydroxyuracil derivatives are involved in this reaction in the dioxo form. 2005 Pleiades Publishing, Inc.
Multicatalytic Transformation of (Meth)acrylic Acids: a One-Pot Approach to Biobased Poly(meth)acrylates
Fouilloux, Hugo,Placet, Vincent,Qiang, Wei,Robert, Carine,Thomas, Christophe M.
supporting information, p. 19374 - 19382 (2021/07/21)
Shifting from petrochemical feedstocks to renewable resources can address some of the environmental issues associated with petrochemical extraction and make plastics production sustainable. Therefore, there is a growing interest in selective methods for transforming abundant renewable feedstocks into monomers suitable for polymer production. Reported herein are one-pot catalytic systems, that are active, productive, and selective under mild conditions for the synthesis of copolymers from renewable materials. Each system allows for anhydride formation, alcohol acylation and/or acid esterification, as well as polymerization of the formed (meth)acrylates, providing direct access to a new library of unique poly(meth)acrylates.
METHOD FOR PRODUCING (METH)ACRYLIC ACID ANHYDRIDE
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Paragraph 0032-0040, (2021/05/28)
PROBLEM TO BE SOLVED: To provide an industrially useful method for producing a (meth)acrylic acid anhydride capable of producing a (meth)acrylic acid anhydride with high yield and high purity. SOLUTION: There is provided a method for producing a (meth)acrylic acid anhydride by reacting a (meth)acrylic acid alkali metal salt and sulfonyl chloride in an organic solvent. The (meth)acrylic acid alkali metal salt includes lithium (meth)acrylate, sodium (meth)acrylate, potassium (meth)acrylate or the like. Among these (meth)acrylic acid alkali metal salts, preferable are sodium acrylate, potassium acrylate, sodium methacrylate and potassium methacrylate in consideration of market feedability, reactivity and easiness of treatment after the reaction. In addition, the sulfonyl chloride includes benzenesulfonyl chloride, p-toluenesulfonyl chloride and methanesulfonyl chloride. SELECTED DRAWING: None COPYRIGHT: (C)2021,JPOandINPIT
Method for preparing N-hydroxyethylmethacrylamide
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Paragraph 0019; 0020; 0021, (2017/10/07)
The invention discloses a method for preparing N-hydroxyethylmethacrylamide. Methacrylic anhydride moderately reacts with aminoethanol under low temperature. A generated byproduct methacrylic acid can be separated from a product through a distillation manner, and a production process is simple and feasible. The N-hydroxyethylmethacrylamide obtained by the method disclosed by the invention has high purity and high yield.
METHOD FOR PRODUCING CARBOXYLIC ACID ANHYDRIDE AND METHOD FOR PRODUCING CARBOXYLIC ACID ESTER
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Paragraph 0075, (2017/04/18)
Provided is a production method whereby corresponding carboxylic acid anhydrides and carboxylic acid esters can be obtained at high yield from various carboxylic acids even without a solvent and near room temperature. A method for producing a carboxylic acid anhydride represented by formula (II), the method comprising reacting a compound represented by formula (I) and a carboxylic acid in the presence of a Group II metal compound having an ionic ligand containing an oxygen atom. A method for producing a carboxylic acid ester, the method comprising reacting a carboxylic acid anhydride produced by the aforementioned method and an alcohol. In formula (I), R1 represents a C1-20 hydrocarbon group. In formula (II), R2 represents a C1-20 hydrocarbon group.
SYNTHESIS OF (METH) ACRYLIC ANHYDRIDE BY TRANSANHYDRIZATION
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Paragraph 0100; 0101; 0102; 0103; 0104, (2016/12/01)
The invention relates to a method for producing a (meth)acrylic anhydride A-C(═O)—O—(O═)C-A, comprising the following steps: a) a step of reacting an anhydride B—C(═O)—O—(O═)C—B with an acid A-COOH, resulting in the formation of mixed anhydride A-C(═O)—O—(O═)C—B and acid B—COOH; and b) a step of reacting the mixed anhydride with A-COOH, resulting in the (meth)acrylic anhydride. According to the invention, reaction steps (a) and (b) are carried out in the presence of hydrated triflic acid, and the anhydride A-C(═O)—O—(O═)C-A is isolated from the reaction medium produced in step (b) as follows: e1) heavy compounds having a volatility less than or equal to that of the anhydride A-C(═O)—O—(O═)C-A are separated from the reaction medium, said compounds including the anhydride and the hydrated triflic acid; e2) the anhydride is separated from the heavy compounds by difference in volatility.
Synthesis of (meth)acrylic anhydride by transanhydrization
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Paragraph 0107-0108, (2016/05/19)
The present invention relates to a process for preparing an anhydride of formula A-C(═O)—O—(O═)C-A, where A is —CR═CH2 and R is —H or —CH3, comprising: a) a step of reacting an anhydride B—C(═O)—O—(O═)C—B with an acid A-COOH, A being as defined above, wherein the step results in the formation of an anhydride A-C(═O)—O—(O═)C—B and of an acid B—COOH, A and B being such that said acid B—COOH is more volatile than said acid A-COOH, and b) a step of reacting said anhydride A-C(═O)—O—(O═)C—B with the acid A-COOH under conditions such that the amount of acid B—COOH is less than the amount of acid A-COOH, resulting in the formation of the anhydride A-C(═O)—O—(O═)C-A, in which said reaction steps are carried out in the presence of an acid catalyst which is more volatile than said anhydride A-C(═O)—O—(O═)C-A.
Α, β-unsaturated carboxylic acid manufacturing method
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Paragraph 0060; 0061; 0062; 0063; 0064; 0065, (2016/12/16)
PROBLEM TO BE SOLVED: To obtain high selectivity of α,β-unsaturated carboxylic acid which is an objective product, when producing the α,β-unsaturated carboxylic acid by subjecting alcohol, olefin or α,β-unsaturated aldehyde to liquid phase oxidation by molecular oxygen.SOLUTION: When producing the α,β-unsaturated carboxylic acid by subjecting alcohol, olefin or α,β-unsaturated aldehyde to liquid phase oxidation by molecular oxygen, a catalyst containing palladium is used, and after starting reaction of the liquid phase oxidation, supply of a molybdenum compound into a reaction system is started.
Synthesis of (meth)acrylic anhydride by transanhydrization
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Paragraph 0107-0108, (2015/07/27)
The present invention relates to a process for preparing an anhydride of formula A-C(═O)—O—(O═)C-A, where A is —CR═CH2 and R is —H or —CH3, comprising: a) a step of reacting an anhydride B—C(═O)—O—(O═)C—B with an acid A-COOH, A being as defined above, wherein the step results in the formation of an anhydride A-C(═O)—O—(O═)C—B and of an acid B—COOH, A and B being such that said acid B—COOH is more volatile than said acid A-COOH, and b) a step of reacting said anhydride A-C(═O)—O—(O═)C—B with the acid A-COOH under conditions such that the amount of acid B—COOH is less than the amount of acid A-COOH, resulting in the formation of the anhydride A-C(═O)—O—(O═)C-A, in which said reaction steps are carried out in the presence of an acid catalyst which is more volatile than said anhydride A-C(═O)—O—(O═)C-A.
Multi-scale promoting effects of lead for palladium catalyzed aerobic oxidative coupling of methylacrolein with methanol
Han, Junxing,Zhang, Suojiang,Li, Yuchao,Yan, Ruiyi
, p. 2076 - 2080 (2015/04/14)
A highly efficient Pd2Pb8/alumina catalyst was prepared, which provided the highest turnover number (TON) of 302 for aerobic oxidative coupling of methylacrolein with methanol. The enhanced catalytic efficiency could be attributed to the multi-scale (micron, nano and atom scales) promoting effects of the pre-loaded Pb species. This journal is
