Journal of the American Chemical Society, Vol.129, No.22, 7002-7002, 2007
Cyclopolymerization of 1,6-heptadienes catalyzed by iron and cobalt complexes: Synthesis of polymers with trans- or cis-fused 1,2-cyclopentanediyl groups depending on the catalyst
The Fe and Co complexes with a bis(imino)pyridine ligand promote the polymerization of 1,6-heptadienes with quantitative cyclization to yield polymers containing five-membered rings. The polymers composed of cis-fused five-membered rings and trans-fused rings are obtained selectively by choosing the catalyst.