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PROCESS FOR THE PREPARATION OF THE (-)-N-METHYL-N-4-(4-PHENYL-4-ACETYLAMINOPIPERIDIN-1-YL)-2 -(3,4-DICHLOROPHENYL) BUTYL BENZAMINE ANDITS PHARMACEUTICALLY ACCEPTABLE SALTS
PROCESS FOR THE PREPARATION OF THE (-)-N-METHYL-N-4-(4-PHENYL-4-ACETYLAMINOPIPERIDIN-1-YL)-2 -(3,4-DICHLOROPHENYL) BUTYL BENZAMINE ANDITS PHARMACEUTICALLY ACCEPTABLE SALTS
A process is described for the preparation of (+)-2-(3,4-dichlorophenyl)-4-hydroxybutylamine of formula (I) and for the preparation of the (-)-N-methyl-N-¢4-(4-phenyl-4-acetylamino-piperidin-1-yl)-2-(3,4-dichlorophenyl)butyl!benzamide and of its pharmaceutically acceptable salts using the compound of formula (I) as synthesis intermediate.
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