Coupling of 4-allyloxy-3-trifluoromethoxybenzoic acid (I) with D-serine methyl ester (II) using HATU/HOAt affords amide (III). Subsequent treatment of the benzoyl serine derivative (III) with diethylaminosulfur trifluoride gives rise to the oxazoline (IV). Finally, displacement of the methyl ester group of (IV) with hydroxylamine in the presence of NaOMe produces the title racemic hydroxamic acid