Abstract
A chiral ruthenium catalyst bound to a mesoporous SBA-15 material [Ru-SBA-15/(R,R)-DPEN, 1] was prepared by the postgrafting method. The hydrogenation of aromatic ketones was carried out with the catalyst 1 to give the corresponding ethanols in >99% yield and 98.4-99.9% ee (5 examples). In the reaction of acetophenone, the catalyst was recovered by filtration and reused seven times. The eighth recycling run gave (R)-1-phenyl-1-ethanol in >99% yield with 93.6% ee.
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