The mono-Boc-protected 1,4-phenylenediamine (I) was acylated with 1,2,3-thiadiazole-4-carbonyl chloride (II) to produce amide (III). After Boc group cleavage in (III) by means of trifluoroacetic acid, the resultant amine (IV) was condensed with 3,5-bis(trifluoromethyl)phenyl isothiocyanate (V) to afford the title thiourea.