Aromatic methyl ketones and cyclic asymmetric ketones underwent hydrophosphorylation with P-stereogenic H–P species in the presence of potassium carbonate to produce P,C-stereogenic tertiary α-hydroxyl phosphinates in excellent yields with up to 99 : 1 dr. The diastereoselectivity was induced by a reversible conversion of less stable stereomer of product to that of a more stable one via an equilibrium
在
碳酸钾存在下,芳香族甲基酮和环状不对称酮与P-立体异构H-P物种进行加氢
磷酸化反应,以高达99:1 dr的高产率生产P,C-立体异构叔α-羟基
次膦酸酯。非对映选择性是通过平衡使产物的较不稳定的立体异构体可逆转化为较稳定的立体异构体而可逆转化的,这通过醛/酮交换反应得到证实。为了进行交换,脂族或醛羰基分别比芳族或酮羰基更具活性。两种非对映异构体之间的稳定性差异是由连接
磷或α-碳的取代基的大小控制的。