Iridium and Ruthenium Complexes with Chelating N-Heterocyclic Carbenes: Efficient Catalysts for Transfer Hydrogenation, β-Alkylation of Alcohols, and N-Alkylation of Amines
Organometallics2008Vol. 28(1), pp. 321–325
Citations Over TimeTop 10% of 2008 papers
Dinakar Gnanamgari, Effiette L. O. Sauer, Nathan D. Schley, C. Butler, Christopher D. Incarvito, Robert H. Crabtree
Abstract
Air-stable Ir and Ru complexes of a chelating pyrimidine-functionalized N-heterocyclic carbene were synthesized. The complexes were characterized by NMR spectroscopy and single-crystal X-ray diffraction and were found to be catalytically active for transfer hydrogenation, β-alkylation of secondary alcohols with primary alcohols, and N-alkylation of amines with primary alcohols. Notably, the Ir complexes were found to catalyze the N-alkylation of amines using the mild base NaHCO3.
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