Deoxy-Arylation of Amides via a Tandem Hydrosilylation/Radical– Radical Coupling Sequence
作者:Nicholas J. Venditto、Jeffrey A. Boerth
DOI:10.1021/acs.orglett.4c01121
日期:——
for single electron reduction to generate α-amino radicals. Leveraging the ability to generate α-amino radicals from these hemiaminals, we describe a two-step, one-pot, deoxy-arylation of amides utilizing iridium-catalyzed hydrosilylation and photoredox catalysis. This transformation can be tailored toward the late-stage functionalization of biologically relevant molecules, with drug discovery applications
Vaska 的配合物是酰胺氢化硅烷化的重要催化剂。在这些过程中形成的O-甲硅烷基半缩醛胺中间体已被证明是用于亲核加成的亲电子试剂。最近,这些中间体已被证明适合单电子还原生成 α-氨基自由基。利用这些半缩醛胺生成α-氨基自由基的能力,我们描述了利用铱催化的硅氢加成和光氧化还原催化的酰胺的两步、一锅脱氧芳基化。这种转变可以针对生物相关分子的后期功能化进行定制,并可用于药物发现应用,如 NPY Y2 抑制剂的简化合成所示。