Palladium-Catalyzed <i>ortho</i>-C–H Glycosylation/<i>ipso</i>-Alkenylation of Aryl Iodides
作者:Ya-Nan Ding、Wei-Yu Shi、Ce Liu、Nian Zheng、Ming Li、Yang An、Zhe Zhang、Cui-Tian Wang、Bo-Sheng Zhang、Yong-Min Liang
DOI:10.1021/acs.joc.0c01392
日期:2020.9.4
This report describes the first example of palladium-catalyzed ortho-C–H glycosylation/ipso-alkenylation of aryl iodides, and the easily accessible glycosyl chlorides are used as a glycosylation reagent. The reaction is compatible with the functional groups of the substrates, and a series of C-aryl glycosides have been synthesized in good to excellent yield and with excellent diastereoselectivity.
该报告描述了钯催化芳基碘化物邻位-C-H糖基化/ ipso-烯基化的第一个例子,并且易于获得的糖基氯被用作糖基化试剂。该反应与底物的官能团相容,并且已经以良好至优异的产率和优异的非对映选择性合成了一系列C-芳基糖苷。发现廉价的5-降冰片烯-2-腈作为瞬时介体可以有效地促进该反应。此外,IPSO -arylation和氰化还通过战略来实现。