Selective hydroformylation of 1-hexene to branched aldehydes using rhodium complex of modified bulky phosphine and phosphite ligands

Aasif A. Dabbawala, Raksh V. Jasra, Hari C. Bajaj

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    27 Scopus citations

    Abstract

    The selective hydroformylation of 1-hexene to branched aldehydes was investigated using rhodium complex of tri-1-naphthylphosphine PNp3 and tri-1-naphthylphosphite P(ONp)3. The PNp3 and P(ONp)3 ligands having more steric nature than PPh3 enhanced the formation of branched aldehydes at 110 °C and 4.0 MPa syngas pressure. The branched aldehyde selectivity increased remarkably (82%) by adding P(ONp)3 as auxiliary ligand in Rh/PNp3 catalyzed hydroformylation of 1-hexene. The high selectivity for the branched aldehydes is due to rapid alkene isomerization producing internal alkenes followed by hydroformylation to yield branched aldehydes.

    Original languageBritish English
    Pages (from-to)403-407
    Number of pages5
    JournalCatalysis Communications
    Volume12
    Issue number6
    DOIs
    StatePublished - 10 Feb 2011

    Keywords

    • 1-Hexene
    • Hydroformylation
    • Monodentate bulky phosphine
    • Phosphite
    • Selectivity to branched aldehydes

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