We successfully synthesized a novel P-chirogenic diaminophosphine oxide 4, which was applied to catalytic enantioselective construction of quaternary carbon centers using Pd-catalyzed asymmetric allylic substitution with various beta-keto esters (up to 99% yield, 94% ee). Preliminary mechanistic studies indicated that two molecules of 8 coordinate to the Pd metal in a monodentate fashion, resulting
我们成功合成了一种新型的 P-chirogenic 二
氨基氧化膦 4,其用于使用 Pd 催化的不对称烯丙基取代与各种 β-
酮酯(产率高达 99%,94% ee)催化对映选择性构建季碳中心。初步的机理研究表明,两个 8 分子以单齿方式与 Pd
金属配位,导致形成 Pd 配合物 9 (Pd:8 = 1:2),其作为活性物质发挥作用。