Synthesis of 2,5-Dimethyl-N-Pyrrole Linalyl Ester and its Application in Unblended Cigarette
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Abstract:
Using 2,5-hexanedione and glycine as raw material and acetic Acid as catalyst, 2,5-dimethyl-N-Pyrrole glycine was synthesized by Pall-Knorr reaction and then reacted with Linalool, giving 2,5-dimethyl-N-pyrrole linalyl ester was synthesized under the dehydration of EDC. The structures of the compounds were confirmed by IR, 1H NMR, 13C NMR and HR MS spectral analysis. Then the applications of the ester in cigarette flavoring were studied. More than 50 kinds of pyrolysis products were authenticated. Most of the pyrolysis products were aroma components. The smoke panel test showed that the new compound could improve the cigarette taste and flavor, reduce smoking irritation of cigarette.