Practical syntheses of chiral trans-3, 4-disubstituted piperidines and the intermediates

   
   

A new method for the preparation of chiral 4-substituted 2-piperidinones, trans-3,4-disubstituted 2-piperidinones, and trans-3,4-disubstituted piperidines is invented. Chiral paroxetine can be obtained from a chiral trans-3,4-disubstituted piperidine intermediate in high purity and good selectivity.

Eine neue Methode für die Vorbereitung der chiralen 4-substituted 2-piperidinones, trans-3,4-disubstituted 2-piperidinones und trans-3,4-disubstituted Piperidine wird erfunden. Chirales paroxetine kann von einem chiralen trans-3,4-disubstituted Piperidinvermittler im hohen Reinheitsgrad und in der guten Selektivität erreicht werden.

 
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