Selective Dehydrocoupling of Phosphines by Triamidoamine Zirconium Catalysts
摘要:
New zirconium triamidoamine complexes (N3N)ZrR (N3N = N(CH2CH2NSiMe3)(3)(3-); R = Me, < BO > 1 ; PHPh, < BO > 2 ; PHCy, < BO > 4) are effective catalysts for the dehydrocoupling of primary and secondary phosphines and select for the diphosphine product. Mechanistic analysis revealed that metal-catalyzed P-P bond formation occurs via sigma-bond metathesis steps.
C–N Bond formation via ligand-induced nucleophilicity at a coordinated triamidoamine ligand
作者:Annalese F. Maddox、Karla A. Erickson、Joseph M. Tanski、Rory Waterman
DOI:10.1039/c1cc15179g
日期:——
Reaction of (N3N)ZrX complexes (X = amido, Clâ, CH3â) with carbodiimide substrates results in insertion into an ZrâN bond of the triamidoamine ligand rather than the ZrâX bond as has been observed for related (N3N)ZrX complexes (X = PR2â, AsR2â).