Conversion of natural aldehydes from Eucalyptus citriodora, Cymbopogon citratus, and Lippia multiflora into oximes: GC-MS and FT-IR analysis.
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.
Laboratoire de Chimie Organique: Structure et Réactivité; UFR-SEA, Université de Ouagadougou, 03 BP 7021, Ouagadougou 03, Burkina Faso.
Igor W
IW
Ouédraogo
Michael
M
Boulvin
Robert
R
Flammang
Pascal
P
Gerbaux
Yvonne L
YL
Bonzi-Coulibaly
D000447:Aldehydes / Q000737:chemistry*; D031743:Cymbopogon / Q000737:chemistry*; D005052:Eucalyptus / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D032411:Lippia / Q000737:chemistry*; D009570:Nitriles / Q000737:chemistry; D010091:Oximes / Q000032:analysis* / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013997:Time Factors; D014835:Volatilization
D000447:Aldehydes; D009570:Nitriles; D010091:Oximes; D010936:Plant Extracts