J . Am. Chem. Sot. 1992, 114, 1502-1503
1502
The isomerization of allyl alcohols can also be readily carried out at 25 OC using such complexes as catalysts, the stable and easily prepared M O O ~ ( O B U '(5)5 ) ~ serving conveniently as the M solution catalyst precursor. For instance, using a 2.8 X of 5 in CD,C12, 50 equiv of Me2C=CHCH20H is converted in 2.5 h into the equilibrium mixture of this alcohol with CH2= CHCMe20H (ca. 37:63), at an initial rate of 35 turnovers/h. We have shown by 'H N M R that in the presence of excess Me2C= C H C H 2 0 H the initial replacement of OBu' ligands and the displacement of rearranged ligand CH2=CHCMe20 by Me2C=CHCH20is rapid (
