Abstract
Two triphenylphosphine (PPh3)-cyclometallated iridium(III) pyrimidine complexes Ir(NDMP)2PPh3Cl 1 and Ir(NDMP)(PPh3)2Cl22 (NDMP = 2-(2-naphthyl)-4,6- dimethyl-pyrimidine) were synthesized and characterized by NMR, IR, ESI-MS, and elemental analysis. Additionally, their detailed structures have been determined by X-ray single-crystal diffraction. The complex 1 was a PPh3-biscyclometalated Ir(III) complex, while 2 was a PPh3-monocyclometalated Ir(III) complex. These complexes were found to be efficient catalysts for α-alkylation of ketones with alcohols.
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