Cyclocopolymerization of functionalized dienes with ethylene and α-olefins by Pd catalysts

Sehoon Park*, Daisuke Takeuchi, Kohtaro Osakada

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review


Pd complexes with diimine ligands promote cyclopolymerization of diallylmalonates to afford a polymer having cyclopentane group. Herein we report the copolymerization of I with ethylene and a-olefins promoted by the Pd complexes. The copolymerization proceeds smoothly to give the polymer having trans- 1,2-disubstituted cyclopentane repeating unit. Content of I unit in the copolymer varies from 3 to 42% depending on the reaction conditions. The polyethylene with high content of I is linear, while decrease of I content renders the polymer branched. The copolymerization of I with propylene also proceeded to afford the copolymer with increased content of I. The copolymer of I with ethylene or propylene is rich in random sequence, and that with 1-hexene or 1-decene is of block structure. Other dienes such as diethyl diallylmalonate and N.N-diallyl sulfonamides also undergo copolymerization with ethylene and α-olefin in the presence of palladium catalysts to afford the copolymer having trans-l,2-disubstituted cyclopentane repeating unit.

Original languageEnglish
Number of pages1
StatePublished - 2006
Externally publishedYes
Event55th SPSJ Annual Meeting - Nagoya, Japan
Duration: 24 May 200626 May 2006


Conference55th SPSJ Annual Meeting


  • Copolymerization
  • Cyclopolymerization
  • Ethylene
  • Pd catalyst
  • α,ω-Dienes
  • α-Olefin


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