Photo-induced electron-transfer reaction of aryl perfluoroalkanesulfonates with anilines
作者:Qing-Yun Chen、Zhan-Ting Li
DOI:10.1016/0022-1139(93)02901-p
日期:1994.1
Irradiation of mixtures of aryl perfluoroalkanesulfonates (RfSO3C6H4X-p, X = H, Cl and Me) (1) and aniline (2a), N,N-dimethylaniline (2b) or N,N-dimethylaniline (2c) results in the formation of 2-coupling products 3 and 4-coupling products 4. However, in the reactions of 2b and 2c, in addition to 3 and 4, arenes 5 and N-methylaniline (6a) or N-ethylaniline (6b) are also detected. The presence of p-dinitrobenzene
辐照芳基全氟链烷磺酸盐(R f SO 3 C 6 H 4 X- p,X = H,Cl和Me)(1)和苯胺(2a),N,N-二甲基苯胺(2b)或N,N-二甲基苯胺的混合物(2c)导致形成2-偶合产物3和4-偶合产物4。但是,在2b和2c的反应中,除了3和4外,还有芳烃5和N-甲基苯胺(6a)或N-乙基苯胺(6b)也被检测到。存在p -dinitrobenzene,卜吨2 NO和氢醌显著抑制反应。提出了一种光致电子转移机理。
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。