The action of sodium cyanide on 1 : 1 : l-trifluoroacetone afforded the corresponding racemic cyanohydrin which was converted into the racemic a-hydroxy-a-trifluoromethylpropionic acid. Certain derivatives of the latter product were made, and fractional crystallisation of its brucine salt enabled the dextro-and the Zwo-acid to be isolated.
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