作者:Annegret Tillack、Manfred Michalik、Dieter Fenske、Helmut Goesmann
DOI:10.1016/0022-328x(94)88188-x
日期:1994.11
no-4-phenylamino-pyrrolin-2,5-dion (12) has been determined by X-ray crystallography. The pyrrolin-2,5-diones have been applied as planar, chiral N,N-ligands to modify the [Rh(COD)Cl]2 catalyst in the asymmetric hydrosilylation reaction of acetophenone. However, the optical induction observed for this reaction are poor for N,N-ligands as compared to the corresponding P,P-ligands.
二氯马来酰亚胺与光学活性胺的反应得到手性吡咯啉-2,5-二酮。二胺通过13 C-NMR光谱表征。另外,通过X射线晶体学测定了1-(R)-薄荷基-3-(R)-薄荷基氨基-4-苯基氨基-吡咯啉-2,5-dion(12)的分子结构。吡咯啉2,5-二酮已被用作平面手性N,N配体,以修饰苯乙酮的不对称氢化硅烷化反应中的[Rh(COD)Cl] 2催化剂。然而,与相应的P,P-配体相比,对于该反应,观察到的N,N-配体的光感应差。