| abstract |
The invention provides a phosphine ligand of a 2- (3- (disubstituted phosphino) -N-alkyl-1H-indole-2-yl) -N-alkyl-benzimidazole skeleton, and a preparation method and application thereof. The 2- (3- (two)Phosphine ligands substituted with phosphino) -N-alkyl-1H-indol-2-yl) -N-alkyl-benzimidazole backbones, the structures of which are shown below: wherein, R is 1 、R 2 Independently one of hydrogen radical, C1-10 alkyl, alkoxy, oxyalkyl, phenyl and pyridyl, and R is 3 Is phenyl or alkyl, said R 4 、R 5 Independently is one of hydrogen group, alkyl group, alkoxy group, oxyalkyl group, phenyl group, fluoro group and chloro group. |