Heterogeneous aziridination of styrene using N-(p-nitrophenylsulfonyl)imino phenyliodinane as nitrene donor: influence of the reaction parameters on yield and enantioselectivity

John Gullick, Sophia Taylor, Paul McMorn, Donald Bethell, Philip C. Bulman Page, Frederick E. Hancock, Frank King, Graham J. Hutchings

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    Abstract

    The copper-catalysed aziridination of styrene with copper-exchanged zeolite Y (CuHY) and copper(II) triflate (Cu(OTf)(2)) as catalysts is described and discussed. In particular, the effects of reaction conditions on the yield and enantiomeric excess of the aziridine product are described using [N-(p-nitrophenyisulfonyl)imino]phenyliodinane (PhI=NNs) as nitrene donor. By careful control of the styrene:nitrene donor molar ratio and the solvent, an ee of 95% can be obtained for the heterogeneously catalysed bis(oxazoline)-modified zeolite CuHY The ee achieved with the zeolite immobilised catalyst is significantly higher than that achieved for the non-immobilised homogeneous catalyst under comparable reaction conditions. (C) 2002 Elsevier Science B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)571-575
    Number of pages5
    JournalJournal of Molecular Catalysis A: Chemical
    Volume182-183
    DOIs
    Publication statusPublished - 31 May 2002

    Keywords

    • OLEFINS
    • ANISOLE
    • styrene aziridination
    • donors
    • SOLID SOLVENTS
    • ZEOLITE CATALYSTS
    • FINE CHEMICALS SYNTHESIS
    • nitrene
    • bis(oxazoline)-modified CuHY zeolite

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