Bi(OTf)3 and SiO2-Bi(OTf)3 are found to effectively catalyze the Ferrierrearrangement of tri-O-acetyl glycals with different alcohols providing an effective routeto 2,3-unsaturated O-glycosides with good anomeric selectivity and good to excellentyields after short reaction times.
经发现,Bi(OTf)3 和 SiO2-Bi(OTf)3 能有效催化三-O-乙酰基
糖类的Ferrier重排反应,在不同的醇作用下,提供了一条有效合成2,3-不饱和O-糖苷的途径,具有良好的异头选择性和良好的至极佳的产率,且反应时间短。