期刊
JOURNAL OF CARBOHYDRATE CHEMISTRY
卷 22, 期 1, 页码 9-23出版社
TAYLOR & FRANCIS INC
DOI: 10.1081/CAR-120019010
关键词
phase-transfer glycosylation; scented alcohols; flavorant-release additives
Various conditions for glycosylation (Koenigs-Knorr, Helferich, trichloroacetimidate, Fischer-Raske, phase-transfer methods) of 3-ethoxy-4-hydroxybenzaidehyde (ethyl vanillin), 3-hydroxy-2-methyl-4-pyranone (maltol) and 2,5-dimethyl-4-hydroxy-3(2H)-furanone (furaneol((R))) were evaluated, taking into account yields and ease of preparation (e.g., utilized donor, catalyst, conditions). The best results were achieved employing phase transfer catalysis in a two-phase solvent mixture. To increase water solubility for better applicability, the hitherto unknown maltosides of the corresponding alcohols were synthesized, again proving the value of phase-transfer conditions for glycosylation of phenols.
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