This invention provides a stereospecific process for the synthesis of (S)-(+)-N,N-dimethyl-3-(1-naphthalenyloxy)-3-(2-thienyl)propanamine, a key intermediate in the synthesis of duloxetine, comprising
reacting (S)-(-)-N,N-dimethyl-3-(2-thienyl)-3-hydroxypropanamine with sodium hydride, a potassium compound chosen from potassium benzoate or potassium acetate, and 1-fluoronaphthalene in an organic solvent.
(S)-(+)-N,N-dimethyl-3-(1-naphthalenyloxy)-3-(2-thienyl) propanamine,phosphoric acid salt is also an aspect of the invention.
本发明提供了一种合成(S)-(+)-N,N-二甲基-3-(1-
萘氧基)-
3-(2-噻吩基)丙胺(合成
度洛西汀的关键中间体)的立体特异性工艺,包括
将(S)-(-)-N,N-二甲基-3-(2-
噻吩基)-
3-羟基丙胺与氢化
钠、选自
苯甲酸钾或
醋酸钾的
钾化合物和
1-氟萘在有机溶剂中反应。
(S)-(+)-N,N-二甲基-3-(1-
萘氧基)-
3-(2-噻吩基)丙胺磷酸盐也是本发明的一个方面。