Silver(I)-Mediated CH Amination of 2-Alkenylanilines: Unique Solvent-Dependent Migratory Aptitude
作者:So Won Youn、Tae Yun Ko、Min Jung Jang、Su San Jang
DOI:10.1002/adsc.201400759
日期:2015.1.12
A highly effective silver(I)‐mediated CHamination of 2‐alkenylanilines has been developed to afford a diverse range of substituted indoles. High functional group tolerance, broad substrate scope, simple/fast/high‐yielding reaction, and recovery/reuse of the inexpensive silver oxidant are noteworthy. Furthermore, an uncommon migratory process of β‐monosubstituted 2‐alkenylanilines with solvent‐dependence
“Quick and click” assembly of functionalised indole rings via metal-promoted cyclative tandem reactions
作者:Francesca Capitta、Lidia De Luca、Andrea Porcheddu
DOI:10.1039/c4ra12000k
日期:——
An efficient and convenient synthesis of a variety of decorated indoles using a three-component tandem metal-catalysed process is described.
描述了一种高效且方便的合成多种修饰吲哚的方法,该方法使用了三组分串联金属催化过程。
Facile Preparation of Indoles and 1,2-Benzothiazine 1,1-Dioxides: Nucleophilic Addition of Sulfonamides to Bromoacetylenes and Subsequent Palladium-Catalyzed Cyclization
Bromine as a double agent: The bromine atom in 1‐bromo‐1‐alkynes works as an electron‐withdrawing group to effect the nucleophilicaddition of sulfonamides. It again plays a pivotal role in the palladium‐catalyzed cyclization of the resultant (Z)‐2‐(sulfonylamino)‐1‐bromoalkenes into nitrogen heterocycles (see scheme).
Unusual 1,2-aryl migration in Pd(<scp>ii</scp>)-catalyzed aza-Wacker-type cyclization of 2-alkenylanilines
作者:So Won Youn、So Ra Lee
DOI:10.1039/c5ob00361j
日期:——
Hegedus aza-Wacker indole synthesis, we were intrigued with the fate of the aminopalladation intermediate if syn β-hydrogen is made inaccessible or unavailable. In contrast to our previously reported β-carbon elimination, cyclization of a variety of 2-alkenylaniline substrates under electrophilic palladium conditions unexpectedly afforded C3-substituted indoles. This unusual 1,2-migratory process was
Direct CH amination for indole synthesis from N-Ts-2-Styrylaniline derivatives catalyzed by copper salt
作者:Di Chen、Han-Jie Mo、Ding-Ben Chen、Jian-Guo Yang
DOI:10.1016/j.cclet.2015.04.020
日期:2015.8
A direct C-H amination reaction of N-Ts-2-Styrylaniline derivatives to realize the synthesis of indole derivatives was developed in the presence of copper salt. A variety of N-Ts-2-Styrylaniline derivatives were transformed into the corresponding indole products in good to excellent yield under mild conditions with the oxidation of potassium persulfate. (C) 2015 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.