The present invention relates to a process for the synthesis of chiral enantiomerically pure .beta.-amino alcohols which are extraordinarily important as therapeutic agents for the treatment of a variety of human disorders and as chiral auxiliaries in organic synthesis. The hydroboration of enamines is a versatile and convenient method for the synthesis of both racemic and enantiomerically pure .beta.-amino alcohols in high yields. This methodology enables the synthesis of virtually any .beta.-amino alcohol. Hydroboration of these enamines with chiral organic borohydrides, e.g. either mono- or diisopinocampheylborane, followed by oxidation with aqueous or solid NaOH/30% H.sub.2 O.sub.2 or Me.sub.3 NO, gives the corresponding chiral .beta.-amino alcohol. Enantiomeric excesses ranged from 60% for reactions run at 25.degree. C. to greater than 99% for reactions run at -25.degree. C.
本发明涉及一种合成手性对映纯的β-
氨基醇的方法,这些β-
氨基醇作为治疗多种人类疾病的治疗剂和有机合成中手性辅助剂具有非常重要的意义。烯胺的氢
硼化是一种多用途、方便的合成方法,可高产率地合成混合和手性对映纯的β-
氨基醇。该方法使得几乎任何β-
氨基醇都可以合成。使用手性有机
硼氢化物(例如单或双异丙基蒎
硼烷)对这些烯胺进行氢
硼化,然后用
水溶性或固体NaOH / 30%
H2O2或Me3NO氧化,得到相应的手性β-
氨基醇。对映体过量范围从在25℃下反应时为60%到在-25℃下反应时大于99%。