Reaction of Palladium 1,5-Cyclooctadiene Alkyl Chloride with Norbornene Derivatives: Relevance to Metal-Catalyzed Addition Polymerization of Functionalized Norbornenes

The insertions of norbornene, bicyclo[2.2.1]hept-5-ene-endo-2-carboxylic acid ethyl ester, bicyclo[2.2.1]hept-5-ene-exo-2-carboxylic acid ethyl ester, and
bicyclo[2.2.1]hept-5-enyl-endo-2-methyl acetate into the
palladium−methyl bond of (η4-cycloocta-1,5-diene)chloromethylpalladium(II) were found to proceed at similar
rates, with the product in every case being derived from
insertion through the exo face.