FIELD: organic chemistry. SUBSTANCE: product - derivatives of trifluoromethylmercaptan of the formula (I): 
where X - a lower alkyl, possibly substituted with hydroxyphenyl or tetrazole, carboxy-lower alkyl, possibly substituted with naphthalene, carboxy-lower cycloalkyl, 1-tetrazolyl-2-indolylethyl or amino acid residue. Reagent 1: acid chloroanhydride of the formula (II): 
. Reagent 2: amine of the formula (III): H2N-X. Reaction conditions: in the presence of amine or in water-soluble carbodiimide. Intermediate product - compound of the formula (IV): 
. Reagent 3: base. Synthesized compounds are used in the chemistry of organosulfur compounds. EFFECT: improved method of synthesis. 1 tbl
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