459-80-3Relevant articles and documents
Method for synthesizing aromatic folic acid from methyl heptenone
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Paragraph 0053-0064, (2021/03/13)
The invention provides a method for synthesizing aromatic folic acid from methyl heptenone. The method comprises the following steps: under the actions of a Lewis acid catalyst and a cocatalyst, condensing methyl heptenone and ketene to obtain a beta-propiolactone intermediate, hydrolyzing beta-propiolactone, acidifying and dehydrating to obtain aromatic folic acid. The synthetic route is novel, alarge amount of methyl heptenone and ketene which are easy to obtain and low in price serve as starting materials, the aromatic folic acid is synthesized through two-step reaction, the synthetic route is short, the yield is high, and the cost advantage is good. Secondly, in hydrolysis and dehydration reactions, strong acid resin is used as a catalyst, mixed liquor of ethanol water and the like isused as a solvent, and a tubular reactor is adopted so that continuous hydrolysis and dehydration of beta-propiolactone are realized, the reaction yield is high, and the use amount of the catalyst issmall.
PLANT OR MICROORGANISM-DERIVED CAROTENOID-OXYGEN COPOLYMER COMPOSITIONS, METHODS OF IDENTIFYING, QUANTIFYING AND PRODUCING SAME AND USES THEREOF
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Paragraph 00107, (2017/09/21)
The present invention relates to carotenoid-oxygen copolymers, compositions, methods of identifying and quantifying carotenoid-oxygen copolymers in food and related sources, and methods of producing compositions comprising same. In one aspect the method of identifying and quantifying carotenoid-oxygen copolymers comprises an analysis of a low molecular weight marker compound in said sources. In another aspect the present invention provides a method of preparing compositions comprising said carotenoid-oxygen copolymers and/or enhancing levels of said copolymers in food sources in a sufficient and practically useful concentration to have beneficial effects in animals and humans, including beneficial immunological and health effects.
NOVEL REACTION WITH A GOLD CATALYST
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Page/Page column 27-28, (2009/01/24)
The invention relates to a process for the catalytic conversion of a carbohydrate, an alcohol, an aldehyde or a polyhydroxy compound in the presence of a catalyst containing gold in a solvent.