申请人:Takasago International Corporation
公开号:US05824822A1
公开(公告)日:1998-10-20
A phosphine-phosphinite compound represented by formula (I): ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each represent a substituted or unsubstituted phenyl group or a substituted or unsubstituted naphthyl group, and a process for preparing a 4-\x9b(R)-1'-formylethyl!azetidin-2-one derivative using the compound (I). The compound (I), either in combination, or as a complex, with a transition metal compound, is useful as a catalyst for asymmetric hydroformylation and makes it possible to easily synthesize an important intermediate for carbapenem antibiotics or a precursor thereof at high regioselectivity and diastereo-selectivity.
化合物(I)是一种磷胺-磷酸盐化合物,其化学式为:##STR1##其中R.sup.1和R.sup.2,可以相同也可以不同,每个都代表一个取代或未取代的苯基或一个取代或未取代的萘基,并且使用化合物(I)制备4-\x9b(R)-1'-甲醛基乙基!吲哚啉-2-酮衍生物的方法。化合物(I),无论是单独使用还是与过渡金属化合物形成配合物,都可作为不对称水合甲酰化的催化剂,并能够以高区域选择性和对映选择性轻松合成卡巴比林类抗生素的重要中间体或其前体。