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1.9.1.5 Incubation by Impurities; Dormant States

DOI: 10.1055/sos-SD-201-00223

van Leeuwen, P. W. N. M.Science of Synthesis: Stereoselective Synthesis, (20111414.

Irreversible decomposition of ligands (and thus catalysts) is discussed elsewhere, while this section is only concerned with temporary poisoning of the catalyst. Dienes and alkynes are well-known poisons for many alkene processes. In polyalkene manufacture they must be carefully removed as they deactivate the catalyst completely. Insertion of conjugated dienes is much more rapid than insertion of ethene and propene. The resulting π-allyl species are inactive as catalysts.

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