Dehydrogenation, hydrogenolysis, isomerization and hydrogenation of 3-phenylprop-2-en-1-ol with carbonylperchloratobis(triphenylphosphine)iridium(I) and carbonyldihydridoperchloratobis(triphenylphosphine)iridium(III)

Article abstract of DOI:10.1016/0022-328X(88)83154-1

Reaction of 3-phenylprop-2-en-1-ol (1) with Ir(ClO4)(CO)(PPh3)2 (2) under nitrogen at 25 deg C gives 3-phenylprop-2-enal (4), 3-phenylprop-2-ene (5), and 3-phenylpropanal (6).Dehydrogenation of 1 by 2 gives Ir(H)2(ClO4)(CO)(PPh3)2 (3) which reacts with another molecule of 1 to give 5, 2 and H2O.Isomerization of 1 to 6 rapidly occurs and hydrogenation of 6 to 3-phenylpropan-1-ol (12) slowly follows in the presence of 2 under hydrogen at 25 deg C.The catalytically active species for the isomerization under nitrogen seems to be 3.