Copper-Catalyzed Asymmetric Allylic Alkylation of Racemic Cyclic Substrates: Application of Dynamic Kinetic Asymmetric Transformation (DYKAT)
作者:Jean-Baptiste Langlois、Alexandre Alexakis
DOI:10.1002/adsc.200900790
日期:2010.2.15
The copper-catalyzed asymmetric allylic alkylation (AAA) is of great interest in organic synthesis. This reaction was extensively studied using a broad range of substrates, ligands and organometallic reagents. However, the use of racemic substrates was still limited. Although some processes of kinetic resolution are reported in the literature, no examples of quantitative deracemization are described
铜催化的不对称烯丙基烷基化(AAA)在有机合成中非常重要。使用各种各样的底物,配体和有机金属试剂对这一反应进行了广泛的研究。但是,外消旋底物的使用仍然受到限制。尽管在文献中报道了一些动力学拆分方法,但是没有描述定量脱氨的实例,如Pd催化的烯丙基烷基化的情况。在此,我们将通过在铜催化的AAA中开发这种方法的第一个实例来全面介绍我们的研究。本文报道了高对映选择性(高达99%ee),反应范围和机理考虑。