Asymmetrical cyclic phosphite and phosphinite ligands of a novel type bearing either trifluoromethyl or pentafluorophenyl group were synthesized using >PCl or >PN< species and racemic fluorinated alcohols. The P-ligands were converted to complexes of RhIII(L)(Cp∗)Cl2 type (where L = phosphite or phosphinite) and, in two instances, their stereostructures were evaluated by X-ray analysis. These complexes
使用> PCl或> PN <物质和外消旋氟化醇合成了带有三氟甲基或五氟苯基的新型新型不对称环状亚磷酸酯和次膦酸酯配体。将P-配体转化为Rh III(L)(Cp ∗)Cl 2型(其中L =亚磷酸酯或次亚膦酸酯)的配合物,在两种情况下,通过X射线分析评估了它们的立体结构。这些配合物与由Rh(CO)2(acac)前体和相应配体形成的原位系统一起在苯乙烯的加氢甲酰化中进行了测试。两种系统在100°C时均具有出色的加氢甲酰化活性。使用Rh I 在原位系统中,分别在100和40°C下获得对分支醛(2-苯基-丙醛)的中等和高区域选择性。