Convenient Multigram Scale Glycosylations of Scented Alcohols Employing Phase‐Transfer Reactions
作者:Lars Kröger、Joachim Thiem
DOI:10.1081/car-120019010
日期:2003.1.3
trichloroacetimidate, Fischer–Raske, phase‐transfer methods) of 3‐ethoxy‐4‐hydroxybenzaldehyde (ethyl vanillin), 3‐hydroxy‐2‐methyl‐4‐pyranone (maltol) and 2,5‐dimethyl‐4‐hydroxy‐3(2H)‐furanone (furaneol®) 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