The present invention relates to a method of enantioselective addition to imines, including: reacting R
2
CH═NY with R
3
ZnR
4
in the presence of a compound represented by the following formula (I),
in which Y, R
1
, R
2
, R
3
and R
4
are defined the same as the specification. Accordingly, the present invention can prepare secondary amines in high yields and enantiomeric excess by the above-mentioned method.
本发明涉及一种对
亚胺进行对映选择性加成的方法,包括:在以下化合物的存在下,将R2CH═NY与R3ZnR4反应,其中该化合物由以下式(I)表示,其中Y、R1、R2、R3和R4的定义与规范相同。因此,本发明可以通过上述方法高产率和对映过量地制备二级胺。