The invention discloses a preparation method of chiral
sertraline hydrochloride. The method comprises the steps that cis-
sertraline hydrochloride and alkali of
alkali metal salt containing D-mandelicacid are mixed and stirred in a
solvent, after
dehydration, inorganic salt is filtered out, a filtrate is cooled and crystallized, and
solid-liquid separation is carried out; coarse D-mandelic acidsertraline is recrystallized, and
solid-liquid separation is carried out; refined D-
mandelic acid sertraline reacts with inorganic alkali in a mixed
solvent of water and the
organic solvent, and
dehydration,
crystallization and
solid-liquid separation are carried out; a filtrate and
hydrogen chloride are mixed and stirred in an
organic solvent, after salification is completed, solid-liquid separation, washing and
drying are carried to obtain the chiral
sertraline hydrochloride. The preparation method of the chiral
sertraline hydrochloride has the advantages that the
alkali metal salt of the D-
mandelic acid is taken as a resolving agent, the yield of cis-(1S,4S)-
hydrochloride sertraline is high, the single
organic solvent can be adopted in the entire process, the
recovery rate of the alkalimetal salt of the D-
mandelic acid and
solvent is high, the
alkali metal salt and the solvent can be recycled, and the preparation method is simple in operation, safe,
environmentally friendly and suitable for industrial production.