| abstract |
The invention relates to a new method for synthesizing imidazoline group-containing chiral carbene precursor and its metal complex. The synthesis method is simple, and the imidazoline salt reacts with a base to obtain a chiral carbene ligand containing an imidazoline group, which can be widely used in asymmetric catalytic reactions. The imidazoline-containing chiral carbene precursor and metal complex thereof provided by the invention have the following structural formula: In the formula, R 1 , R 2 , R 3 , R 4 and R 5 are independently selected from: hydrogen or C1-C6 linear or branched alkyl, C2-C8 cycloalkyl, C2-C6 alkenyl, alkyne radical, aryl, aralkyl or aralkenyl, aryloxy, alkoxy, halogen, nitro, ester, amido, trifluoromethyl, cyano or C2-C6 alkenyl, alkynyl group, aryl group, aralkyl group or arene group, aryloxy group, alkoxy group, halogen, nitro group, ester group, amide group, trifluoromethyl group, cyano group One of the alkyl groups. M is one of various transition metals Ru, Rh, Pd, Ir, Pt, Cu, Ag, Au. is a chiral structure. |