A process produces an optically active amine or its salt and includes the steps of reacting a ketone of Formula (1a):
1
wherein R
1
is typically an unsubstituted or substituted hydrocarbon group; and R
2a
is typically a hydrocarbon group having at least one oxo group and optionally having other substituent, with an optically active amine of Formula (2):
2
wherein R
3
is an unsubstituted or substituted aryl group; R
4
is an unsubstituted or substituted lower alkyl group; and C
1
is an asymmetric carbon atom, in the presence of an organic acid to thereby yield a corresponding optically active imine, hydrogenating the imine in the presence of a catalyst to yield a corresponding amine, subjecting the amine or its salt to hydrogenolysis in the presence of a catalyst, and reducing the hydrogenolyzed product with a reducing agent.
该过程生产出一种旋光性胺或其盐,包括以下步骤:在有机酸存在下,将式(1a)的酮与式(2)的旋光性胺反应,其中式(1a)中R1通常是未取代或取代的碳氢基团;R2通常是具有至少一个氧代基和可选的其他取代基的碳氢基团;式(2)中R3是未取代或取代的芳基团;R4是未取代或取代的低碳基团;C1是一个不对称碳原子,从而得到相应的旋光性
亚胺,将
亚胺在催化剂存在下氢化,得到相应的胺,将胺或其盐在催化剂存在下进行氢解,然后用还原剂还原氢解产物。