该研究报道了通过电化学反应无催化剂合成6-芳基菲啶和酰胺。通过阴极还原由苯胺和亚硝酸烷基酯形成的原位形成的重氮离子进行偶联反应。由异氰酸酯偶联生成的芳基自由基重氮鎓离子以良好的收率提供了所需的产物。该级联反应在室温下以n Bu 4 NBF 4作为电解质在配备有RVC作为阳极且Pt作为阴极的不分隔电池中进行。还进行了一系列详细的机理研究,包括自由基时钟实验和循环伏安法分析。
Rapid synthesis of polysubstituted phenanthridines from simple aliphatic/aromatic nitriles and iodo arenes <i>via</i> Pd(<scp>ii</scp>) catalyzed domino C–C/C–C/C–N bond formation
An efficient and straightforward method has been developed for the synthesis of polysubstituted phenanthridines from simple aryl iodides and alkyl/aryl nitriles via the palladium-catalyzed nucleophilic addition of aryl iodides to nitriles followed by cascade formation of C–C and C–N bonds viz. in situ generated imine directed sequential two fold C–H activation.
A One-Pot Access to 6-Substituted Phenanthridines from Fluoroarenes and Nitriles via 1,2-Arynes
作者:Jan Pawlas、Mikael Begtrup
DOI:10.1021/ol026197c
日期:2002.8.1
[reaction: see text] A one-pot, t-BuLi-induced synthesis of 6-substitutedphenanthridines from fluoroarenes and nitriles via 1,2-arynes is reported. Aryl- and hetaryl nitriles, cyanamides, and trimethylacetonitrile gave phenanthridineproducts. The method was extended to provide bisphenanthridine 10 by a one-pot bis-cyclization, using 1,3-dicyanobenzene and PhF in 1:5 ratio. Reaction of 1-fluoronaphthalene
Trifluoroacetic acid-mediated facile construction of 6-substituted phenanthridines
作者:So Won Youn、Joon Hyung Bihn
DOI:10.1016/j.tetlet.2009.05.071
日期:2009.8
The trifluoroacetic acid-mediated reaction of 2-arylanilines with arylaldehydes has been developed to give a variety of 6-substituted phenanthridines. This is a very simple and convenient one-pot process for library construction. (C) 2009 Elsevier Ltd. All rights reserved.