The title reaction is shown to exhibit a high level of “anti” diastereofacial selection, in contrast to the “syn” selection observed for the reaction with the dilithium enolate of the chiral ester. Mechanistic grounds for the “anti” stereoselection are discussed.
与在与手性酯的二
锂烯醇盐反应中观察到的 "同步 "选择相反,标题反应显示出高度的 "反 "非对映选择。讨论了 "反 "立体选择的机理依据。