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Molecules 2009, 14(9), 3275-3285; https://doi.org/10.3390/molecules14093275

Conversion of Natural Aldehydes from Eucalyptus citriodora, Cymbopogon citratus, and Lippia multiflora into Oximes: GC-MS and FT-IR Analysis

1
Laboratoire de Chimie Organique: Structure et Réactivité; UFR-SEA, Université de Ouagadougou, 03 BP 7021, Ouagadougou 03, Burkina Faso
2
Laboratoire de Chimie Organique, Centre de Spectrométrie de Masse, Université de Mons, Place du Parc 20, B-7000 Mons, Belgium
Dedicated to the memory of Prof. Guy Ourisson, Strasbourg, France (1926-2006), an inspiring mentor.
*
Author to whom correspondence should be addressed.
Received: 20 July 2009 / Revised: 11 August 2009 / Accepted: 26 August 2009 / Published: 31 August 2009
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Abstract

Three carbonyl-containing extracts of essential oils from Eucalyptus citriodora (Myrtaceae), Cymbopogon citratus (Gramineae) and Lippia multiflora (Verbenaceae) were used for the preparation of oximes. The reaction mixtures were analyzed by GC-MS and different compounds were identified on the basis of their retention times and mass spectra. We observed quantitative conversion of aldehydes to their corresponding oximes with a purity of 95 to 99%. E and Z stereoisomers of the oximes were obtained and separated by GC-MS. During GC analysis, the high temperature in the injector was shown to cause partial dehydratation of oximes and the resulting nitriles were readily identified. Based on FT-IR spectroscopy, that revealed the high stability and low volatility of these compounds, the so-obtained oximes could be useful for future biological studies. View Full-Text
Keywords: essential oils; aldehydes; GC-MS; oximes; nitriles essential oils; aldehydes; GC-MS; oximes; nitriles
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Ouédraogo, I.W.; Boulvin, M.; Flammang, R.; Gerbaux, P.; Bonzi-Coulibaly, Y.L. Conversion of Natural Aldehydes from Eucalyptus citriodora, Cymbopogon citratus, and Lippia multiflora into Oximes: GC-MS and FT-IR Analysis . Molecules 2009, 14, 3275-3285.

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