| abstract |
A type of optically pure diamides, which have the general formula as follows. The configuration is L or D, wherein Het represents 4-8 membered heterocycles contaning nitrogen atom on the backbone; each of R1, R2, R3 is hydrogen, hydrocarbonyl, substituted hydrocarbonyl, hydrocarbonyl containing heteratom or hydrocarbonyl containing heteratom in substituted group; R1 and R2, or R2 and R3 link together to form 3-8 membered heterocycles, X is hydrogen or oxygen, Y is carbonyl, sulfonyl or phosphoryl; R4 is hydrocarbonyl, substituted hydrocarbonyl, hydrocarbonyl containing heteratom or ZR4(wherein Z is hydrogen or oxygen). The compounds of the present invention can be used as catalysts in selective catalytic hydrogen transfer reduction of imines. And the preparation of the type of the compounds. |