| abstract |
The chiral ligands of the oxazolamine amino group of the present invention form an enantioselectivity catalyst in asymmetric reactions with transition metals. The structure of the achiral ligands corresponds to the general formula (I), (II) (III) or (IV), wherein R, R 1, R 2, R 3, R 4, R 5, R 6 and R 7 are each independently hydrogen, alkyl, aryl, substituted alkyl or substituted aryl. wherein any two substituents of R 1, R 2, R 3 and R 4 may be linked to each other by a ring structure and wherein any of R 5, R 6 and R 7 may be linked to each other by a ring structure and has a value of 1 or 2. According to the invention, the asymmetric reaction-enhanced enantioselectivity catalyst is prepared. imidate ester is reduced with chiral alcohol. HE |