3852-09-3Relevant articles and documents
Dzhemilev et al.
, (1977)
Schilling,Jr.
, p. 1770 (1974)
Synthesis method of methyl 3-methoxypropionate
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Paragraph 0041-0068, (2021/03/13)
The invention relates to a synthesis method of methyl 3-methoxypropionate, which comprises the following steps of carrying out addition reaction on absolute methanol and methyl acrylate under the condition of a catalyst which is a micromolecular tertiary amine catalyst, and after the reaction is finished, rectifying to remove excessive absolute methanol, unreacted methyl acrylate and the catalyst,collecting methyl 3-methoxypropionate with the purity of more than 99.8% as a product, and recycling the collected excessive absolute methanol, unreacted methyl acrylate and the catalyst in the nextreaction. The synthesis method has the advantages of simple synthesis, mild conditions, no need of acid neutralization, few side reactions, no three wastes, high conversion rate, long-term use of thecatalyst, repeated cyclic utilization, no damage, simplified separation process, good product quality, easy obtainment of 99.8% or above of purity, promotion of large-scale production, and facilitation of large-scale application to the photoelectric industry.
Method for preparing 3-methyl methoxypropionate
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Paragraph 0020; 0021; 0022; 0023; 0024; 0025; 0026-0029, (2018/04/03)
The invention relates to a method for preparing 3-methyl methoxypropionate. The method is characterized in that methyl acetate, formaldehyde and methanol are used as raw materials for reaction under the presence of a catalyst, and 3-methyl methoxypropionate is obtained. The catalyst is composed of an active component and a carrier. The active component includes a Cs metal salt, an alkali metal hydroxide and an IVB-group metal oxide. The method has the advantages in that the raw materials are low in cost, the production process is continuous and 3-methyl methoxypropionate is high in yield.
MANUFACTURING METHOD OF β-SUBSTITUTED PROPIONIC ACID AMIDE AND N-SUBSTITUTED (METH)ACRYLAMIDE
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Paragraph 0046; 0048; 0050, (2018/07/03)
PROBLEM TO BE SOLVED: To provide a method for industrially manufacturing β-alkoxy propionic acid amide, β-amino propionic acid amide and N-substituted (meth)acryl amide using (meth)acrylic acid ester as starting material at high yield and high purity. SOLUTION: There is provided a method for obtaining N-substituted (meth)acryl amide represented by target compound formula (7) by conducting an amidation reaction with amine using β-substituted propionic acid ester represented by the formula (1) of a product of a Michael addition reaction of (meth)acrylic acid ester and alcohol or amine in presence of a metal complex as a catalyst to obtain β-substituted propionic acid amide represented by the formula (3) and conducting a thermal decomposition reaction of β-substituted propionic acid amide in presence of the metal complex as the catalyst to eliminate alcohol or amine. A-CH2-C(R1)H-C(=O)-OR2 (1), A-CH2-C(R1)H-C(=O)-N(R3)R4 (3), CH2=C(R1)-C(=O)-N(R3)R4 (7) SELECTED DRAWING: None COPYRIGHT: (C)2018,JPOandINPIT