Nickel-catalyzed C–N bond activation: activated primary amines as alkylating reagents in reductive cross-coupling
作者:Huifeng Yue、Chen Zhu、Li Shen、Qiuyang Geng、Katharina J. Hock、Tingting Yuan、Luigi Cavallo、Magnus Rueping
DOI:10.1039/c9sc00783k
日期:——
Nickel-catalyzed reductive cross coupling of activated primaryamines with aryl halides under mild reaction conditions has been achieved for the first time. Due to the avoidance of stoichiometric organometallic reagents and external bases, the scope regarding both coupling partners is broad. Thus, a wide range of substrates, natural products and drugs with diverse functional groups are tolerated. Moreover
作者:Haitao Qin、Wangshui Cai、Shuang Wang、Ting Guo、Guigen Li、Hongjian Lu
DOI:10.1002/anie.202107356
日期:2021.9.13
Examples are provided of deletion of nitrogen from natural products, synthesis of chiral O-heterocycles from commercially available chiral β-aminoalcohols, formal inert C−H functionalization through a sequence of N-directed C−H functionalization and N-atom deletion reactions in which the N-atom can serve as a traceless directing group.
切除仲胺中的氮并将两个残留片段偶联起来是一种骨架编辑策略,可用于构建具有新骨架的分子,但在很大程度上尚未被探索。在这里,我们报告了一种从 N-杂环中切除 N-原子的通用方法。该过程使用容易获得的 N-杂环作为底物,并通过 N-磺酰叠氮作用进行,然后氨磺酰叠氮化物中间体的重排,提供各种环状产物。提供了从天然产物中删除氮、从市售手性 β-氨基醇合成手性 O-杂环、通过一系列 N 导向的 CH 官能化和 N 原子缺失反应的形式惰性 CH 官能化的例子其中 N 原子可以作为一个无痕导向群。