Synthesis of 3-Pyridinecarboxylic Acid Leaf Alcohol Esters and its Application in Cigarette
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Abstract:
In order to develop new cigarette flavors, synthetic novel pyridine compounds were added to cigarettes to supplement the aroma, and improve the smoking quality of cigarette. 3-Pyridine carboxylic acid was used as a raw material and 3-pyridine carbonyl chloride hydrochloride was obtained through acylation reaction with thionyl chloride. Then the same volume of leaf alcohol was added, pyridine as solvent and catalyst, and reacted for 12 h at 6 0 ℃ to synthetize 3-pyridine carboxylic acid leaf alcohol ester. The structure of the compound was confirmed by 1H NMR, 13C NMR, IR and HRMS spectra. And then its thermal stabilities and cracking behaviors at 300 ℃, 600 ℃ and 900 ℃ were studied. Fifty kinds of pyrolysis products were authenticated and most of them were aroma components. The smoke panel test showed that 3-pyridine carboxylic acid leaf alcohol ester could improve the aroma quality, increase the aroma quantity, harmonize the aroma, clean the after-taste and reduce offensive odor of cigarettes. At concentration of 1.50‰, it showed the most appropriate flavoring effect.
