10485-23-1Relevant articles and documents
A low-cost high-safety L - carnitine preparation method (by machine translation)
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Paragraph 0023; 0025-0027; 0033, (2018/07/30)
The invention relates to a kind of vitamin nutrient preparation method, in particular to a low-cost high-safety L - carnitine preparation method. It is to solve the problems of the prior art L - carnitine preparation of unstable product quality, the use of highly toxic chemicals cyanide, in production had a certain amount of risk, and the production cost is higher. The present invention is added in the high-pressure reactor chloro acetyl ethyl acetate and anhydrous ethanol, access trimethylamine gas, and then adding the compound (III), catalyst and methanol times, stir for three times after hydrogen replacement, recovery of catalyst, filtering to obtain the compound (II), in the reactor, (II) compound is added and the sodium hydroxide solution, then stirring under heating to reflux the reaction, after the reaction, to obtain the L - carnitine crude alkali solution, through the cation exchange resin treatment to remove impurities, to obtain an aqueous solution of L - carnitine, concentrated, vacuum drying to obtain L - carnitine (I) works. (by machine translation)