Methacrylate insertion into cationic diimine palladium(II)-alkyl complexes and the synthesis of poly(alkene-mocfc-alkene/carbon monoxide) copolymers

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Abstract

The reaction of cationic Pd(II) diimine complex [(N∧N)Pd(Me)(L)] [B(Arf)4] ((N∧N) = 2,3-bis(2,6-di- isopropylphenylimino)butane, Arf -3,5-(CF3) 2C6H3, L = Et2O) with methyl methacrylate results in 1,2-insertion regiochemistry that is opposite ofthat observed with methyl aery late. The enthalpy of activation for MMA insertion is 4 kcal/mol higher than that for the corresponding MA insertion. The MMA-inserted complex can be employed for ethene or 1-hexene homopolymerization and their alternating copolymerization with carbon monoxide. Further, the quasi-living nature of the polymerizations allows the synthesis of poly(hexene-b-hexeneZCO) and poly(ethene-bethene/CO) copolymers.

Original languageEnglish (US)
Pages (from-to)4711-4714
Number of pages4
JournalOrganometallics
Volume26
Issue number19
DOIs
StatePublished - Sep 10 2007

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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