作者:Yizhao Chen、Mark D Smith、Ken D Shimizu
DOI:10.1016/s0040-4039(01)01482-4
日期:2001.10
Described is the preparation, resolution, and absolute configuration of a new axially chiral monodentate phosphine ligand. The chirality of the ligand is derived from restricted rotation about a central NimideCaryl bond, resulting in enantiomeric atropisomers that are stable and separable up to >120°C. Finally, the ability of the new axially chiral phosphine ligand is demonstrated in a Pd-catalyzed allylic
描述了一种新的轴向手性单齿膦配体的制备,拆分和绝对构型。配体的手性来自围绕中心N酰亚胺C芳基键的受限旋转,从而导致对映异构的阻转异构体在超过> 120°C的温度下是稳定且可分离的。最后,在Pd催化的烯丙基烷基化反应中证明了新的轴向手性膦配体的能力。