A method for the preparation of S-citalopram comprising reaction of a compound of Formula (IV), ##STR1## wherein R is C.sub.1-6 alkyl, acyl, C.sub.1-6 alkylsulfonyl or arylsulfonyl, with 3-(N,N-dimethylamino)-propyl magnesium halide, to prepare citalopram.

Un metodo per la preparazione di S-citalopram che contiene reazione un residuo della formula (iv), ## del ## STR1 in cui la R รจ alchile C.sub.1-6, acilico, alkylsulfonyl C.sub.1-6 o arylsulfonyl, con 3-(N, alogenuro N-dimethylamino)-propilico del magnesio, per preparare citalopram.

 
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