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US 10,501,409 B2Granted
Method for producing methionine and/or 2-hydroxy-4-(methylthio) butanoic acid
AssigneeSumitomo Chemical Company, Limited
InventorMasayuki Ikeguchi
Life of this patent
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Abstract
An object of the invention is to provide a simple method for producing methionine and/or 2-hydroxy-4-(methylthio)butanoic acid at a high yield using 3-(methylthio)propionaldehyde as a raw material. An oxide catalyst containing cerium, 3-(methylthio)propionaldehyde, a compound containing cyanide ion, ammonia or a compound containing ammonium ion, and water are contacted with each other to produce methionine and/or 2-hydroxy-4-(methylthio)butanoic acid.
Claims8
A method for producing methionine and 2-hydroxy-4-(methylthio)butanoic acid, comprising contacting
- an oxide catalyst containing cerium,
- 3-(methylthio)propionaldehyde,
- a compound containing cyanide ion, ammonia or a compound containing ammonium ion, and
- water
- with each other,
- wherein the amount of the oxide catalyst containing cerium is, in a cerium amount, 0.02 to 1.5 moles, per mole of 3-(methylthio)propionaldehyde.
3 more elements
Dependencies are inferred from the claim text.