| 简介 |
The invention relates to homoleptic, ortho-metalated, chelate-stabilized benzylamine complexes of the rare earth elements. The rare earth elements are selected from the group including Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu. At least one benzylic proton of the benzylamine ligand in the complexes according to the invention is replaced by an alkyl or aryl group. The preferred complexes are complexes in which both benzylic protons of the benzylamine ligand are replaced by alkyl or aryl groups. The complexes according to the invention are produced by reacting chelate-stabilized rare earth halides with ortho-lithiated aryl ligands at room temperature in a protective atmosphere. The complexes according to the invention are thermostable and are suitable as catalysts for the hydroamination of olefins. |
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