Substrate‐Controlled Cyclopropanation Reactions of Glycals with Aryl Diazoacetates
作者:Yujing Guo、Chao Pei、Rene M. Koenigs
DOI:10.1002/cctc.202000569
日期:2020.8.20
Cyclopropanation reactions of d‐glucal and d‐galactal derivatives with aryldiazoacetates can be conducted in a substrate‐controlled, stereoselective fashion using simple Rh(II) catalysts, which is further supported by DFT studies. Following this methodology, sugar‐derived, donor‐acceptor cyclopropanes can be accessed that allow stereoselective O‐glycosylation reactions.
环丙烷化反应,d -glucal和d -galactal与aryldiazoacetates衍生物可以使用简单的Rh(II)催化剂的基板控制,立体选择性的方式,这是由DFT研究进一步支持下进行。按照这种方法,可以访问糖衍生的供体受体环丙烷,从而实现立体选择性的O糖基化反应。