Synthesis of enantiomerically pure (1R,2S)- and (1S,2R)-2-Amino-1,2-bis(pentafluorophenyl)ethanols
作者:Takashi Sakai、Kazuhiro Kubo、Setsuo Kashino、Kenji Uneyama
DOI:10.1016/0957-4166(96)00221-2
日期:1996.7
Enantiomerically pure (1R,2S)- and (1S,2R)-2-amino-1,2-bis(pentafluorophenyl)-ethanols 1a and 1b have been prepared from (±)-2-(t-butyldimethylsiloxy)-2-(pentafluorophenyl)acetonitrile in three steps involving resolution of (±)-1 by salt formation with D-camphor-10-sulfonic acid. The absolute configuration of 1a was established by X-ray crystallographic analysis after camphorsulfonylation.
对映体纯的(1 R,2 S)-和(1 S,2 R)-2-氨基-1,2-双(五氟苯基)-乙醇1a和1b由(±)-2-(叔丁基二甲基甲硅烷氧基)制备)-2-(五氟苯基)乙腈分三个步骤,涉及通过与D-樟脑10磺酸成盐来拆分(±)-1。樟脑磺酰化后,通过X射线晶体学分析确定1a的绝对构型。