34846-90-7Relevant articles and documents
Research and development of the catalytic oxidation of methylacrylate to 3,3-dimethoxy methyl propionate
Tanaka, Yoshiyuki,Takahara, Jun P.,Lempers, Hans E.B.
, p. 548 - 554 (2009)
A selective synthesis of 3,3-dimethoxy methyl propionate has been developed using a green approach, in which the key step is a palladium-catalyzed oxidation of methylacrylate in methanol using oxygen as oxidant. The relationship between several reaction p
Preparation method of methyl 3-methoxyacrylate
-
Paragraph 0020-0026, (2020/12/10)
The invention relates to a synthetic method of methyl 3-methoxyacrylate. The method is characterized by comprising the following steps that: (1) methyl 3, 3-dimethoxypropionate is synthesized from ketene dimer and trimethyl orthoformate at 25-90 DEG C under the catalytic action of an alkaline substance by taking alcohols as a solvent, and the molar ratio of the ketene dimer to trimethyl orthoformate to the alkaline substance is controlled to be 1: (1.0-5.0): (0.5-5.0); and (2) after the reaction is finished, the methyl 3, 3-dimethoxypropionate is cracked under the action of a catalyst to generate 3-methoxy methyl acrylate, and controlling the molar ratio of the methyl 3, 3-dimethoxypropionate to the catalyst to be 1: (1.0-5.0) and the reaction temperature to be 100-200 DEG C. According tothe method, raw materials are cheap and easy to obtain; the synthesis method is simple to operate; the reaction conditions are mild; requirements on equipment are low; and requirements of industrial large-scale production are met.
Method for preparing E-alkoxyacrylate through one-pot synthesis technology
-
Paragraph 0044; 0050; 0054; 0058; 0062; 0063; 0066; 0070, (2018/07/06)
The invention discloses a method for preparing E-alkoxyacrylate through a one-pot synthesis technology. The method comprises the following steps: S1, carrying out a Friedel-Crafts reaction on alkenylether and oxalyl chloride; S2, decarboxylating a Friedel-Crafts reaction product obtained in step S1 to obtain alkenyl acyl chloride; and S3, esterifying the alkenyl acyl chloride to obtain the E-alkoxyacrylate. The alkenyl ether and oxalyl chloride undergo the Friedel-Crafts reaction at a low temperature under solvent-free and metal catalyst-free conditions, the Friedel-Crafts reaction product undergoes heating decarboxylation to obtain the alkenyl acyl chloride, and the alkenyl acyl chloride is esterified to obtain the E-alkoxyacrylate, so precious metal catalysts and a lot of solvents are not used in the whole technologic route, and severely toxic phosgene and expensive initial raw materials are avoided, thereby the technologic route has the cost advantage in industrial amplified production.
