Visible-Light-Mediated Synthesis of <i>C</i>-Alkyl Glycosides via Glycosyl Radical Addition and Aryl Migration
作者:Rui-Qiang Jiao、Ya-Nan Ding、Ming Li、Wei-Yu Shi、Xi Chen、Zhe Zhang、Wan-Xu Wei、Xue-Song Li、Xiao-Ping Gong、Yu-Yong Luan、Xue-Yuan Liu、Yong-Min Liang
DOI:10.1021/acs.orglett.3c01988
日期:2023.8.25
A visible-light-induced glycoarylation of activated olefins has been accomplished. Glycosyl radicals are generated via radical transfer strategies between (TMS)3SiOH and glycosyl bromides. Subsequent radical translocation and rapid 1,4-aryl migration form β-sugar amide derivatives, and eight types of sugars are compatible with this reaction. Further, the cascade reaction produced a quaternary carbon
可见光诱导的活化烯烃糖芳基化已经完成。糖基自由基是通过 (TMS) 3 SiOH 和糖基溴之间的自由基转移策略产生的。随后的自由基易位和快速的1,4-芳基迁移形成β-糖酰胺衍生物,并且八种类型的糖与该反应相容。此外,级联反应在温和条件下产生了具有良好官能团适应性和高区域选择性的季碳中心。