申请人:Takasago International Corporation
公开号:US06143834A1
公开(公告)日:2000-11-07
A transition metal complex of a polymer of 2'-diarylphosphino-1,1'-biphenylen-2-yloxy(6,6'-divinyl-1,1'-binaphthalene -2,2'-diyloxy)phosphine derivative is disclosed, which is represented by general formula (I): ##STR1## wherein Ar is an optionally substituted phenyl or naphthyl; R.sup.1 and R.sup.2 each independently is a hydrogen atom, a lower alkyl, a lower alkoxy, etc.; and R.sup.3 is a lower alkyl, a lower alkoxy, etc.; provided that R.sup.2 and R.sup.3 may be bonded to each other to form a hydrocarbon ring, which may have one or more substituents selected from lower alkyl groups, halogen atoms, vinyl, etc. Also disclosed are a polymer having structural units derived from the phosphine derivative and a transition metal complex obtained by causing a transition metal compound to act on the phosphine derivative or the polymer. A novel polymer-supported ligand is provided which, when used as a catalyst for asymmetric syntheses, gives satisfactory results concerning catalytic activity, enantiomer excess, etc.
本发明揭示了一种2'-二芳基膦基-1,1'-联苯并-2-氧基(6,6'-二乙烯基-1,1'-联萘并-2,2'-二氧基)膦衍生物的聚合物的过渡金属配合物,其通式表示为(I):##STR1## 其中Ar是可选取代的苯基或萘基;R.sup.1和R.sup.2各自独立地是氢原子、低碳基、低烷氧基等;R.sup.3是低碳基、低烷氧基等;前提是R.sup.2和R.sup.3可以连接在一起形成一个碳氢环,该碳氢环可以具有一个或多个从低碳基团、卤素原子、乙烯等中选择的取代基。还揭示了一种由膦衍生物衍生的结构单元的聚合物以及通过使过渡金属化合物作用于膦衍生物或聚合物而获得的过渡金属配合物。提供了一种新型的聚合物支持的配体,当用作不对称合成的催化剂时,具有令人满意的催化活性、对映异构体过量等结果。