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  • Title: Highly regioselective isomerization-hydroformylation of internal olefins to linear aldehyde using rh complexes with tetraphosphorus ligands.
    Author: Yu S, Chie YM, Guan ZH, Zhang X.
    Journal: Org Lett; 2008 Aug 21; 10(16):3469-72. PubMed ID: 18616258.
    Abstract:
    A series of new pyrrole-based tetraphosphorus ligands were synthesized and used for Rh-catalyzed isomerization-hydroformylation of internal olefins. It was found that the substituents at the 3,3',5,5'-positions of the biphenyl greatly effected the linear selectivity, and the alkyl-substituted tetraphosphorus ligands gave the best results (for 2-octene, n: i up to 207, for 2-hexene, n: i up to 362).
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