A Practical Strategy for the Structural Diversification of Aliphatic Scaffolds through the Palladium-Catalyzed Picolinamide-Directed Remote Functionalization of Unactivated C(sp3)H Bonds
作者:Gang He、Gong Chen
DOI:10.1002/anie.201100984
日期:2011.5.23
Hats off to the director: High levels of regio‐ and stereoselectivity were observed for a broad range of amine substrates with aryl and vinyl iodide coupling partners in the title reaction. The synthetic utility of this strategy was highlighted by the ready preparation from threonine of 1, with a removable picolinamide auxiliary PAr, and its coupling with 2 in a concise formal synthesis of (+)‐obafluorin
指导者:对标题反应中具有芳基和乙烯基碘化物偶联伙伴的多种胺底物观察到高水平的区域选择性和立体选择性。该策略的合成效用突出显示了苏氨酸1的制备,可移动的吡啶甲酰胺辅助PAr以及其与2的偶合,从而简化了(+)-氧氟硼烷的形式化合成。TBS =叔丁基二甲基甲硅烷基。