Triflic Imide‐Catalyzed Glycosylation of Disarmed Glycosyl
<i>ortho</i>
‐Isopropenylphenylacetates and
<i>ortho</i>
‐Isopropenylbenzyl Thioglycosides
作者:Zhi Qiao、Peng Wang、Jingxuan Ni、Dongwei Li、Yao Sun、Tiantian Li、Ming Li
DOI:10.1002/ejoc.202101367
日期:2022.1.17
ortho-isopropenylphenylacetates and ortho-isopropenylbenzyl thioglycosides has been established. Mechanistically, the reaction involves the preferential protonation of the isopropenyl group, the generation of reactive glycosylating species by the cation-triggering intramolecular cyclization, and the ensuing glycosylation event.
已经建立了 Tf 2 NH 催化去武装糖基邻-异丙烯基苯乙酸酯和邻-异丙烯基苄基硫苷的糖基化的有效方案。从机理上讲,该反应涉及异丙烯基的优先质子化,通过阳离子触发的分子内环化产生反应性糖基化物质,以及随后的糖基化事件。