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
Supported palladium nanoparticles-catalyzed decarboxylative coupling approaches to aryl alkynes, indoles and pyrrolines synthesis
作者:C. Bal Reddy、Richa Bharti、Sandeep Kumar、Pralay Das
DOI:10.1039/c6ra12046f
日期:——
The polystyrene supported palladium (Pd@PS) nanoparticles (NPs) catalyzed decarboxylative coupling (DC) of arylhalides and alkynyl carboxylic acids was developed for the synthesis of diaryl alkynes. Indole and 3-pyrroline heterocycles were also synthesized from 2-iodo anilines/amino benzocycloheptene bromide and alkynyl carboxylic acids, following a domino decarboxylative coupling-cyclization (DCC)
Visible light mediated desilylative C(sp<sup>2</sup>)–C(sp<sup>2</sup>) cross-coupling reactions of arylsilanes with aryldiazonium salts under Au(<scp>i</scp>)/Au(<scp>iii</scp>) catalysis
作者:Indradweep Chakrabarty、Manjur O. Akram、Suprakash Biswas、Nitin T. Patil
DOI:10.1039/c8cc03925a
日期:——
Desilylative C(sp2)–C(sp2) cross-coupling reactions of arylsilanes with aryldiazonium salts under Au(I)/photoredox catalysis have been reported. The addition of Cu-salts as catalysts was found to be crucial for the success of this transformation.
Abstract The cyclization reaction of 2-ethynyl- N -sulfonylanilides proceeded efficiently in water with the presence of a catalytic amount of K 2 CO 3 under transition metal-free condition to give indoles in high yields. The recovery and reusability of the present catalytic system were investigated.
摘要在无过渡金属条件下,在催化量的K 2 CO 3存在下,2-乙炔基-N-磺酰腈在水中的环化反应有效地进行,从而获得了高产率的吲哚。研究了本催化体系的回收率和可重复使用性。