Patent ID: 11192846

Abstract:
A preparation method of substituted primary amine is disclosed. The preparation method uses cyanophenyl and a derivative thereof as raw materials, nanoporous palladium as a catalyst, and H2 as a hydrogen source, and conducts selective hydrogenation to prepare the substituted primary amine. The molar concentration of the cyanophenyl and the derivative thereof in the solvent is 0.01-2 mmol/mL, and the molar ratio of the cyanophenyl to the derivative thereof to the catalyst is 1:0.01-1:0.5. The size of a pore framework of the nanoporous palladium is 1 nm-50 nm. The pressure of the H2 is 0.1-20.0 MPa. The obtained product has high selectivity; the present invention has mild reaction conditions, does not need any additive, and has simple operation and post-processing and good catalyst reproducibility. After repeatedly used, the catalytic activity of the present invention is not significantly reduced, thereby providing the possibility of realizing industrialization.