申请人:Bayer Aktiengesellschaft
公开号:US04990669A1
公开(公告)日:1991-02-05
The invention relates to new optically active .alpha.-amino aldehydes of the formulae ##STR1## in which R.sub.1 represents an optionally substituted alkyl, alkenyl, aralkyl or aryl radical, and R.sub.2 and R.sub.3, independently of one another, denote an optionally substituted alkyl, alkenyl, cycloalkyl or aralkyl group, together form an optionally substituted phenylene-(1,2)-bis-methylene radical, or R.sub.2 is an optionally substituted, alkyl, cycloalkyl or aralkyl radical, and R.sub.3 forms together with R.sub.1 a 1,3-propylene radical. a process for the preparation thereof, and the use thereof for the stereoselective preparation of optically active .beta.-amino alcohols.
该发明涉及新的光学活性α-氨基醛,其化学式为##STR1##其中R.sub.1代表可选择地取代的烷基、烯基、芳基烷基或芳基基团,而R.sub.2和R.sub.3分别独立地表示可选择地取代的烷基、烯基、环烷基或芳基烷基团,或者一起形成可选择地取代的苯基-(1,2)-双亚甲基基团,或者R.sub.2是可选择地取代的烷基、环烷基或芳基烷基基团,而R.sub.3与R.sub.1一起形成1,3-丙二基基团。一种制备方法,以及用于立体选择性制备光学活性β-氨基醇的用途。