A phosphine-phosphinite compound represented by formula (I) :
wherein R1 and R2, 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-[(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.
式 (I) 所代表的膦-膦化合物:
其中 R1 和 R2 可以相同或不同,各自代表取代或未取代的苯基或取代或未取代的
萘基,以及使用该化合物(I)制备 4-[(R)-1'-甲酰乙基]氮杂
环丁烷-2-酮衍
生物的工艺。化合物 (I) 与过渡
金属化合物结合或作为复合物,可用作不对称加氢甲酰化反应的催化剂,并能以高区域选择性和非对映选择性轻松合成碳青霉烯类抗生素的一种重要中间体或其前体。