New Type of 2,6-Bis(imidazo[1,2‑<i>a</i>]pyridin-2-yl)pyridine-Based Ruthenium Complexes: Active Catalysts
for Transfer Hydrogenation of Ketones
- Publication date
- 2015
- Publisher
Abstract
Neutral
and cationic ruthenium(II) complexes bearing a symmetrical 2,6-bis(imidazo[1,2-<i>a</i>]pyridin-2-yl)pyridine were synthesized and structurally
characterized by NMR analysis and X-ray crystallographic determinations.
These complexes have exhibited good catalytic activity in the transfer
hydrogenation of ketones. In refluxing isopropyl alcohol, the conversion
of the substrates reached up to 99%, and a TOF value of 356 400
h<sup>–1</sup> with 0.1 mol % catalyst was achieved