| Abstract
| - cis-{2-[Bis(2-methoxyphenyl)phosphino]benzenesulfonate}palladium(II)(methyl)(pyridine) was found to be a catalyst for the living polymerization of ethene and copolymerization of ethene with carbon monoxide, thereby allowing the synthesis of polyethene-block-poly(ethene-alt-carbon monoxide). Using spectroscopic techniques, it was possible to monitor chain growth by sequential insertions of carbon monoxide and ethene into the palladium−methyl bond.
- We report the first well-defined palladium-basedsystem for the living homopolymerization of ethene, as well asthe living copolymerization of ethene with carbon monoxide.We demonstrate this by the synthesis of polyethene-block-poly(ethene-alt-carbon monoxide). In addition, it has been possibleto monitor chain growth by sequential insertions of carbonmonoxide and ethene into palladium−carbon bonds. Themechanistic studies have also allowed us to pinpoint the hithertonot well-understood reason for the general failure to obtainalkene/carbon monoxide copolymers with low carbon monoxidecontent.
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