PURPOSE: To obtain 2-chloropropionic acid at a low cost, by using a rhenium compound, a ruthenium compound or a rhodium compound as a catalyst in a liquid-phase oxidation of 2-chloropropionaldehyde with oxygen or an oxygen- containing gas.
CONSTITUTION: The objective 2-chloropropionic acid having wide applications as an intermediate for industrial chemicals and agricultural chemicals is produced by oxidizing 2-chloropropionaldehyde with oxygen or an oxygen-containing gas in liquid phase in the presence of at least one kind of metallic compound catalyst selected from a rhenium compound, a ruthenium compound and a rhodium compound preferably at 20W120°C, especially at 40W80°C. The objective compound can be easily produced in high purity and efficiency in an environment having little corrosivity under an easily controllable oxidation condition while suppressing the by-production of peracid, etc.
KASUGA TAKAHARU
KIYONO SHINJI
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