Cyclooctadienes homogeneous catalysis

Such diene complexes can be used to prepare homogeneous hydrogenation catalysts in situ, especially where a variable tertiary phosphine/rhodium ratio is required3 or where an asymmetric tertiary phosphine is employed for asymmetric synthesis.4 The cyclooctadiene complex is also the starting point for the preparation a number of complexes of the type [Rh(l, 5-C8H12)L2]+ (L represents a variety of P— and N— donor ligands) of interest in homogeneous catalysis.s... 

Hassan A. Tayim and J. C. Bailar, Jr., Homogeneous Catalysis in the Reactions of Olefinic Substances. VIII. Isomerization of 1,5-Cyclooctadiene with Dichlorobis-(triphenyl-phosphine)platinum(II), J. Am. Chem. Soc. 89 3420 (1967). 

A 4 molar excess of fris-o-tolylphosphite in the presence of the supported nickel—carbonyl catalyst gave a 92% yield in cyclooctadiene, a result identical to that obtained in homogeneous catalysis. Again, the rate is three times lower than... 

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