Palladium(II)-catalyzed alternating copolymerization of allene with carbon monoxide and the synthesis of terpolymer with alt-allene-carbon monoxide and alt-ethene-carbon monoxide blocks. Synthetic and mechanistic aspects

Smita Kacker, Ayusman Sen

Research output: Contribution to journalArticle

54 Scopus citations

Abstract

The alternating copolymerization of 3,3-dimethylallene with carbon monoxide was achieved using [Pd(PPh3)2(MeCN)2](BF4)2 as the catalyst. The use of bidentate phosphines resulted in drastically reduced yields. In order to gain insight into the copolymerization mechanism, the stepwise successive insertions of 3,3-dimethylallene and carbon monoxide into palladium-carbon bonds in the complexes, Pd(PPh3)2(Me)(Cl), [Pd(PPh3)2(C(O)-C6H4-Me-p)(MeCN)](BF4), and [Pd[(Dppp)(Me)(MeCN)](BF4) (Dppp: 1,3-bis(diphenylphosphino)propane), were studied. These studies, in turn, led to a novel living catalytic system which was used to synthesize a terpolymer with alt-allene-carbon monoxide and alt-ethene-carbon monoxide blocks.

Original languageEnglish (US)
Pages (from-to)10028-10033
Number of pages6
JournalJournal of the American Chemical Society
Volume119
Issue number42
DOIs
StatePublished - Jan 1 1997

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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