Copper-mediated anomeric <i>O</i>-arylation with organoboron reagents
作者:Victoria Dimakos、Jacklyn J. W. Liu、Zhenlu Ge、Mark S. Taylor
DOI:10.1039/c9ob01022j
日期:——
Copper-mediated couplings of arylboroxines with glycosyl hemiacetals furnish O-aryl glycosides via Csp2-O bond formation. The method enables the anomeric O-arylation of protected pyranose and furanose derivatives, and is tolerant of functionalized arylboroxine partners. Whereas mixtures of anomers are formed from glucopyranose, galactopyranose and arabinofuranose hemiacetals, the α-anomer is generated