C2-Symmetric bis-thioglycosides as new ligands for palladium-catalyzed allylic substitutions
作者:Noureddine Khiar、Cristina S Araújo、Eleuterio Alvarez、Inmaculada Fernández
DOI:10.1016/s0040-4039(03)00568-9
日期:2003.4
A new divergent design for the synthesis of optically pure bis-thioglycoside type I is reported. In only two steps a common chiral intermediate with up to eight free alcohols: two primary and six secondary is obtained. From this common intermediate a large number of ligands can be synthesized. A positional scanning like strategy has permitted the rapid discovery of an efficient catalyst for the palladium-catalyzed