X-ray Structure and Reactivity of (η4-tetraphenylcyclopentadienone)(CO)2Ru(HOCHMe2): Unexpected Stability of the Neutral 2-Propanol−Ruthenium(0) Complex with Respect to β-Hydride Elimination
摘要:
A neutral Ru(0)-alcohol complex, (eta (4)-C4Ph4CO)(CO)(2)Ru(HOCHMe2) (7), was obtained by treating an acetone solution of (eta (4)-C4Ph4CO)Ru(CO)(3) (6) with aqueous Na2CO3 at room temperature, followed by acidification with aqueous NH4Cl at a 0 degreesC. Complex 7 is stable even at 90 degreesC in toluene and showed catalytic activities in the transfer hydrogenation of acetophenone in 2-propanol and the racemization of optically active 1-phenylethanol.