auxiliary to make multiple equivalents of chiral product and thus minimizing the step- and atom-economy issues associated with auxiliary-mediated synthesis. This concept is demonstrated for the asymmetric hydrogenation of olefins using Oppolzer's sultam, shortening the total reaction time >100 fold compared to batch, and demonstrating formal sub-stoichiometric auxiliary loading with respect to the
描述了三步手性辅助介导的流动转化,包括产物和助剂的连续分离。可以将助剂收集起来供以后再用,也可以直接反馈给过程的开始部分以进行实时回收,从而使每个助剂分子都能制成多个当量的手性产物,从而最大程度地减少了相关的分步和原子经济问题与辅助介导的合成。使用Oppolzer的sultam进行烯烃的不对称氢化证明了这一概念,与批处理相比,该方法缩短了总反应时间> 100倍,并通过在闭环中自动进行辅助循环,证明了该方法的正式亚
化学计量辅助负载。