Pd/Cu-Catalyzed aerobic oxidative aromatic C–H bond activation/N-dealkylative carbonylation towards the synthesis of phenanthridinones
作者:Renyi Shi、Huiying Niu、Lijun Lu、Aiwen Lei
DOI:10.1039/c6cc08701a
日期:——
A straightforward Pd/Cu-catalyzed oxidative C–H bond activation/N-dealkylative carbonylation of tertiary [1,1′-biphenyl]-2-anilines towards the synthesis of various biologically important phenanthridin-6(5H)-ones has been developed. A wide range of functional groups are well tolerated in this transformation.
sequential borane‐mediated C(sp2)−H borylation and intramolecular N‐demethylation. The conveniently in situ generated Piers’ borane from a borinic acid reacts with a series of N,N‐dimethyl‐1,1′‐biphenyl‐2‐amines in the presence of PhSiH3 to afford six‐membered amine‐borane adducts bearing a C(sp2)−B bond at the C2′‐position. These species undergo an intramolecular N‐demethylation with a B(C6F5)3 catalyst to
本文描述了通过连续的硼烷介导的C(sp 2)-H硼化和分子内N-去甲基化从1,1'-联苯胺获得BN-多芳族化合物的空前途径。在PhSiH 3存在下,由硼酸方便地就地生成的Piers'硼烷与一系列N,N-二甲基-1,1'-联苯-2-胺反应,得到六元胺-硼烷加合物在C2'位置的C(sp 2)-B键。这些物种通过B(C 6 F 5)3进行分子内N-去甲基化提供多芳族化合物的BN-等排体的催化剂。根据计算研究,提出了逐步的离子途径。所产生的BN-杂芳烃的光物理特征表明它们与全碳类似物具有显着差异。