Studies on the Essential Oils of Tabacco Leaves

Part II Carbonyl Fraction

抄録

This work was undertaken to separate and identify the carbonyl compounds of the essential oil from Virginia tobacco leaves. In this paper, the carbonyl com-pounds were separated by the chromatographic adsorption on silicic acid and celite from petroleum heuzine-ether and-benzen and identified by melting point and infrared spectra. Acetaldehyde, isobutyraldehyde, benzaldehyde, furfural and 5-methylfurfural were identified from the mixture of 2, 4-dinitrophenylhydrazones of carbonyl com-pounds. Furfural formed two isomers of 2, 4-dinitrophenylhydrazones melting at 206°C and 227°C, respectively.