Olefins cooligomerization with butadiene

Linear oligomerization and telomerization of butadiene take place with nickel complexes in the presence of a proton source (7). In addition, cooligomerization of butadiene with functionalized olefins such as methacrylate is catalyzed by nickel complexes [Eq. (4)] (12, 13) ... 

Cooligomerization of butadiene with some olefinic compounds has been carried out. Two moles of allene reacted at 120°C with butadiene by the catalysis of Pd(PPh3)2 (maleic anhydride) to give cis- and trans-2-methyl-3-methylene-l,5,7-octatriene (119) in 39% yield (104) ... 

Cooligomerization (hetero-oligomerization) of olefins and acetylenes with butadiene in the presence of nickel complexes prevents the formation of butadiene trimers. During hetero-oligomerization chain and cyclic compounds may be formed see equations (13.87) and (13.88). Dodeca-2,6,10-triene-l,12-diylnickel reacts with allene to give various products. Reaction (13.89) is an example. 

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