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Reaction of (±)-1-(2-furyl) ethanol with an equivalent Ph 2 PCl in the presence of Et 3 N proceeds in dry toluene under an argon atmosphere to give 1-(furan-2-yl)ethyl diphenylphosphinite ( 1 ) in good yield. Mononuclear complexes [dichloro(η 6 - p -cymene)(1-furan-2-ylethyl diphenylphosphinite)ruthenium(II)] ( 2 ), [dichloro(η 6 -benzene)(1-furan-2-ylethyl diphenylphosphinite)ruthenium(II)] ( 3 ), [chloro(η 4 -1,5-cyclooctadiene)(1-furan-2-ylethyl diphenylphosphinite)rhodium(I)] ( 4 ) and [dichloro(η 5 -pentamethylcyclopentadienyl)(1-furan-2-ylethyl diphenylphosphinite)iridium(III)] ( 5 ) were synthesized and characterized by microanalysis, infrared, MS, and NMR spectroscopies. The complexes are employed as catalysts in transfer hydrogenation of aromatic ketones. The complexes catalyzed reduction of a variety of aromatic ketone substrates bearing electron-withdrawing or donating substituents with very high conversion rates (up to 99%);  5  was the most efficient catalyst for the transfer hydrogenation of ketones.

Ketone transfer hydrogenation reactions catalyzed by catalysts based on a phosphinite ligand