Chemo-enzymatic process for the preparation of escitalopram
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A process for preparing an intermediate for synthesizing escitalopram and the pharmaceutically acceptable salts thereof from 4-(4-dimethylamino)-1-(4′-fluorophenyl)-1-(hydroxybutyl)-3-(acyloxymethyl) benzonitrile is described. The process involves converting said intermediate into the (S+) enantiomer of citalopram by means of enzymatic enantiomeric resolution.