FIELD: chemistry.
SUBSTANCE: invention concerns new process of obtaining 5-[[2(R)-[l(R)-[3,5-bis(trifluoromethyl)phenyl]ethoxy]-3(8)-(4-fluorophenyl)-4-morpholinyl]methyl]-1,2-dihydro-3H-1,2,4-triazole-3-one compound represented by the formula 1: 
including: interaction of hydrochloride of compound represented by the formula 2: 
with compound of formula 3: 
in the presence of inorganic base, toluene and polar aprotic dissolvent resulting in obtaining compound represented by the formula 4: 
; and cyclisation of compound of formula 4 at the temperature of 140 to 150°C resulting in production of compound of formula 1.
EFFECT: more effective and economical process of the compound production with rather high output.
12 cl, 1 ex
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