| 摘要 |
<p>A process for preparing 2-hydroxy-4-methylthiobutanoic acid by hydrolyzing 2-hydroxy-4-methylthiobutanenitrile and/or 2-hydroxy-4-methylthiobutanamide in the presence of sulfuric acid to thereby obtain a reaction fluid containing 2-hydroxy-4- methylthiobutanoic acid, mixing this reaction fluid with a basic alkali metal compound to form a mixed fluid composed of an oil layer containing 2-hydroxy-4-methylthiobutanoic acid and an aqueous layer, and recovering the oil layer from the mixed fluid. This process enables the efficient preparation of 2-hydroxy-4-methylthiobutanoic acid without an organic solvent with good operating properties.</p> |
