Method for producing 2-Hydroxy-4-Methylthiobutanoic Acid
AssigneeSumitomo Chemical Company, Limited
InventorsKenji Ikudome, Tetsuya Shiozaki
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Abstract
A method for producing a 2-hydroxy-4-methylthiobutanoic acid is provided, the method comprising the steps of: hydrolyzing a 2-hydroxy-4-methylthiobutanenitrile and/or a 2-hydroxy-4-methylthiobutanamide in the presence of a sulfuric acid to obtain a reaction mixture containing a 2-hydroxy-4-methylthiobutanoic acid; mixing the reaction mixture with a basic alkaline metal compound to obtain a mixture comprising an oil layer containing the 2-hydroxy-4-methylthiobutanoic acid and a water layer; and separating the oil layer containing the 2-hydroxy-4-methylthiobutanoic acid from the mixture. In accordance with the present invention, a 2-hydroxy-4-methylthiobutanoic acid is obtained with excellent operability and efficiency without using an organic solvent.
Claims5
A method for producing a 2-hydroxy-4-methylthiobutanoic acid, the method comprising the steps of:
- (A) hydrolyzing at least one selected from a 2-hydroxy-4-methylthiobutanenitrile and a 2-hydroxy-4-methylthiobutanamide in the presence of a sulfuric acid to obtain a reaction mixture containing a 2-hydroxy-4-methylthiobutanoic acid;
- (B) mixing the reaction mixture obtained in step (A) with a basic alkaline metal compound to obtain a mixture comprising an oil layer containing the 2-hydroxy-4-methylthiobutanoic acid and a water layer;
- and
- (C) separating the oil layer containing the 2-hydroxy-4-methylthiobutanoic acid from the mixture obtained in step (B).
Dependencies are inferred from the claim text.