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Trisguanidinate Lanthanide Complexes: Syntheses, Structures, and Catalytic Activity for Mild Amidation of Aldehydes with Amines

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posted on 2009-07-13, 00:00 authored by Cunwei Qian, Xingmin Zhang, Junmei Li, Fan Xu, Yong Zhang, Qi Shen
A series of new trisguanidinate lanthanide complexes including the first THF-solvated trisguanidinate lanthanum complexes were synthesized and fully characterized. The complexes were found to be efficient catalysts for amidation of aldehydes with amines under mild conditions with a wide scope of substrates including pyrrolidine, piperidine, and morpholine, and one of the intermediates for this process, lanthanum amido complex {[(iPrN)CNHiPr(NC6H4p-Cl)]2La(NHC6H5)}2·C7H8, was isolated.

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