申请人:E. I. Du Pont de Nemours and Company
公开号:US04990668A1
公开(公告)日:1991-02-05
Described is a process for preparing a racemic or chiral aryloxypropanolamine (1) or arylethanolamine (2) of the formula ##STR1## wherein Ar is aryl, substituted aryl, heteroaryl, or aralkyl and R is alkyl, substituted alkyl, aralkyl, or WB wherein W is a straight or branched chain alkylene of from 1 to about 6 carbon atoms and wherein B is --NR.sub.2 COR.sub.3, --NR.sub.2 CONR.sub.3 R.sub.4, --NR.sub.2 SO.sub.2 R.sub.3, --NR.sub.2 SO.sub.2 NR.sub.3 R.sub.4, or --NR.sub.2 COOR.sub.5, where R.sub.2, R.sub.3, R.sub.4, and R.sub.5 may be the same or different and may be hydrogen, alkyl, alkoxyalkyl, alkoxyaryl, cycloalkyl, alkenyl, alkynyl, aryl, heteroaryl, or aralkyl, except that R.sub.3 and R.sub.5 are not hydrogen when B is --NR.sub.2 SO.sub.2 R.sub.3 or --NR.sub.3 COOR.sub.5, or R.sub.3 and R.sub.4 may together with N form a 5- to 7-membered heterocyclic group. The process can be used to prepare beta-blocking agents, useful in the treatment of cardiac conditions.
描述了一种制备具有以下结构的外消旋或手性芳基氧
丙醇胺(1)或芳基
乙醇胺(2)的过程
其中Ar为芳基、取代芳基、杂环芳基或芳基烷基,R为烷基、取代烷基、芳基烷基或WB,其中W为由1至约6个碳原子组成的直链或支链烷基,B为--NR.sub.2 COR.sub.3、--NR.sub.2 CONR.sub.3 R.sub.4、--NR.sub.2 SO.sub.2 R.sub.3、--NR.sub.2 SO.sub.2 NR.sub.3 R.sub.4或--NR.sub.2 COOR.sub.5,其中R.sub.2、R.sub.3、R.sub.4和R.sub.5可能相同也可能不同,可以是氢、烷基、烷氧基烷基、烷氧基芳基、环烷基、烯基、炔基、芳基、杂环芳基或芳基烷基,但当B为--NR.sub.2 SO.sub.2 R.sub.3或--NR.sub.3 COOR.sub.5时,R.sub.3和R.sub.5不是氢,或者R.sub.3和R.sub.4可以与N一起形成5至7元杂环基团。该过程可用于制备β-阻滞剂,用于治疗心脏疾病。