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US 2013/0158292 A1Published application
Method for producing methionine
AssigneeSumitomo Chemical Company, Limited
InventorsKoji HAGIYA, Kazuyasu TANI
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Abstract
A novel method capable of producing methionine without using hydrogen cyanide as a raw material has been desired. The present invention relates to a method for producing methionine including Step A of oxidizing 4-methylthio-2-oxo-1-butanal in the presence of an alcohol, and Step B of reductively aminating 4-methylthio-2-oxo-butyrate obtained in Step A. It is preferable that Step A is carried out by reacting 4-methylthio-2-oxo-1-butanal, the alcohol and an oxidizing agent in the presence of a carbene catalyst.
Claims9
A method for producing methionine comprising:
- Step A of oxidizing 4-methylthio-2-oxo-1-butanal in the presence of an alcohol;
- and
- Step B of reductively aminating 4-methylthio-2-oxo-butyrate obtained in Step A.
Dependencies are inferred from the claim text.