reaction comprises two chronological meticulously-designed catalytic cycles: 1) rhodium-catalyzed formation of sulfonium ylide; 2) Brønsted acid-catalyzed formation of sulfonium ion. This protocol highlight-ed an effective and robust tactic to prepare glycosyl sulfonium ion from glycosyl sulfonium ylide precursor amenable for glycosylation.
在此,我们报道了一种高效的糖基化反应,包括两个按时间顺序精心设计的催化循环:1)
铑催化形成锍叶立德;2) Brønsted 酸催化形成锍离子。该协议强调了一种有效且稳健的策略,可从适合糖基化的糖基锍叶立德前体制备糖基锍离子。