catalytic asymmetric hydrophosphination of ortho-quinone methides with H-phosphine oxides is established. A chiral bifunctional squaramide is superior to catalyze this enantioselective carbon–phosphorus bond formation, delivering optically active α-arylmethyl phosphine oxides in high yields with high enantioselectivities (up to 94% yield, 99:1 er). Additionally, employing in situ-generated o-QMs for this
的有效催化不对称hydrophosphination邻与H-膦氧化物-quinone甲基化物被建立。手性双官能
方酸酰胺具有更好的催化这种对映选择性碳-
磷键形成的能力,可以高收率和高对映选择性(高达94%的收率,99:1 er)提供光学活性的α-芳基
甲基膦氧化物。另外,将原位产生的o - QM用于该加氢
磷酸化步骤可经济地提供具有相当产率和对映选择性的相应氧化膦。