This paper describes the design and application of new binaphthyl-proline-based chiral ligands bearing imidazoline functional groups. These chiral ligands incorporate the advantages of both the binaphthyl and proline skeletons, they are featured with regulatable electronic and steric properties for the imidazoline functional groups, and form chiral complexes with different metal salts such as cuprous
本文介绍了带有
咪唑啉官能团的新型联
萘脯
氨酸手性
配体的设计和应用。这些手性
配体结合了联
萘和脯
氨酸骨架的优点,具有可调节
咪唑啉官能团的电子和空间性质,并与不同的
金属盐(例如
乙酸亚
铜)形成手性配合物。在适量的手性催化剂存在下,
4-羟基
香豆素或相关亲核试剂与不同的β,γ-不饱和α-
酮酯的对映选择性共轭加成反应很容易进行,得到了高产率(高达99%)和优异的所需产物。对映体过量(高达 99%)。