作者:Fuk Yee Kwong、Qingchuan Yang、Thomas C. W. Mak、Albert S. C. Chan、Kin Shing Chan
DOI:10.1021/jo0159542
日期:2002.5.1
A new optically active and large dihedral angle atropisomeric P,N ligand, pyphos, which contains a tertiary phosphine and pyridine moiety, was prepared and resolved through diastereomeric complexation with chiral palladium amine complexes. The hexafluorophosphate salt of the diastereomers were found to be separable by fractional recyrstallization, while the corresponding chloride salt did not. [Rh(COD)pyphos]PF(6)
制备了一种新的旋光和大二面角的阻转异构体P,N配体,pyphos,它含有叔膦和吡啶部分,并通过与手性钯胺络合物的非对映体络合而拆分。发现非对映异构体的六氟磷酸盐可以通过分级再结晶来分离,而相应的氯化物盐则不能。[Rh(COD)pyphos] PF(6)配合物的合成方法是,将pyphos与[Rh(COD)Cl](2)进行金属化,然后与NH(4)PF(6)进行阴离子交换,并获得优异的目标铑配合物通过单晶X射线晶体学表征。手性阳离子铑配合物用于乙烯基芳烃的对映选择性硼氢化。观察到优异的区域选择性和良好的对映选择性,