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 language | English |
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Pages (from-to) | 571-575 |
Number of pages | 5 |
Journal | Journal of Molecular Catalysis A: Chemical |
Volume | 182 |
Issue number | 1 |
Publication status | Published - 2002 |
Keywords
- OLEFINS
- ANISOLE
- styrene aziridination
- donors
- SOLID SOLVENTS
- ZEOLITE CATALYSTS
- FINE CHEMICALS SYNTHESIS
- nitrene
- bis(oxazoline)-modified CuHY zeolite