Reductive C(sp<sup>2</sup>)–N Elimination from Isolated Pd(IV) Amido Aryl Complexes Prepared Using H<sub>2</sub>O<sub>2</sub> as Oxidant
作者:Elikplim Abada、Peter Y. Zavalij、Andrei N. Vedernikov
DOI:10.1021/jacs.6b12648
日期:2017.1.18
ketone (dpk)-supported amidoarylpallada(II)cycles derived from various 2-(N-R-amino)biphenyls (R = H, Me, CF3CO, MeSO2, CF3SO2) react with hydrogen peroxide in MeOH, THF, MeCN or AcOH to form the corresponding C-N coupled products, N-R-substituted carbazoles, in 82-98% yield. For R = MeSO2 and CF3SO2, the corresponding reaction intermediates, amidoaryl Pd(IV) complexes were isolated and characterized by
衍生自各种 2-(NR-氨基) 联苯 (R = H, Me, CF3CO, MeSO2, CF3SO2) 的二-2-吡啶基酮 (dpk) 支持的酰胺芳基钯 (II) 环与过氧化氢在 MeOH、THF、MeCN 中反应或 AcOH 形成相应的 CN 偶联产物,NR 取代的咔唑,产率为 82-98%。对于 R = MeSO2 和 CF3SO2,相应的反应中间体,酰胺芳基 Pd(IV) 配合物被分离出来,并通过单晶 X 射线衍射和/或核磁共振光谱进行表征。首次详细研究了从分离的酰胺芳基 Pd(IV) 配合物中的 C(sp2)-N 还原消除。