申请人:Zhang Xumu
公开号:US20050137403A1
公开(公告)日:2005-06-23
A chiral ligand represented by the formula and its enantiomer:
wherein A, X, Y and Z are as defined in the specification is provided. Also provided is a process of making the chiral ligands and catalysts prepared from these ligands and a transition metal, a salt thereof or a complex thereof. In addition, a method of preparing an asymmetric compound by a transition metal catalyzed asymmetric reaction, such as, hydrogenation, hydride transfer reaction, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, hydrocarboxylation, allylic alkylation, epoxidation, cyclopropanation, Diels-Alder reaction, Aldol reaction, ene reaction, Heck reaction and Michael addition is provided.
提供了一种由以下公式表示的手性配体及其对映体:其中A、X、Y和Z如规范中定义。还提供了一种制备手性配体和由这些配体和过渡金属、其盐或其配合物制备的催化剂的方法。此外,还提供了一种通过过渡金属催化的不对称反应制备不对称化合物的方法,例如氢化、氢化物转移反应、硅氢化反应、硼氢化反应、乙烯基化反应、甲醛羧化反应、烯丙基烷基化反应、环氧化反应、环丙烷化反应、Diels-Alder 反应、Aldol 反应、ene 反应、Heck 反应和Michael 加成。