Alkylation of methyl thioglycolate (I) with n-octyl bromide (II) gave the octyl thioether (III). The sulfide group was then oxidized to the sulfoxide (IV) by using either hydrogen peroxide in the presence of ammonium molybdate or m-chloroperbenzoic acid. The target amide was finally obtained by ammonolysis of the methyl ester function of (IV).