T. Hanaoka et al., COLLOIDAL RHODIUM-CATALYZED PHOTO TRANSFER HYDROGENATION OF 1,5-CYCLOOCTADIENE, Journal of molecular catalysis. A, Chemical, 98(3), 1995, pp. 157-160
Colloidal rhodium particles, photochemically generated from Rh-4(CO)(1
2), via transfer hydrogenation, photochemically catalyzed the transfor
mation of 1,5-cyclooctadiene (1,5-COD) to cyclooctene (COE) and then t
o cyclooctane (COA) in the presence of acetone, a triplet sensitizer,
and 2-propanol, a hydrogen donor. The hydrogenation rate of 1,5-COD wa
s faster than that of COE by a factor of 4.3. Maximum selectivity of C
OE was found to be 85%.