Indium-catalyzed annulation of 3-aryl- and 3-heteroarylindoles with propargyl ethers: synthesis and photoluminescent properties of aryl- and heteroaryl[c]carbazoles
C3-Arylation of indoles with aryl ketones <i>via</i> C–C/C–H activations
作者:Zi-Qiong Guo、Hui Xu、Xing Wang、Zhen-Yu Wang、Biao Ma、Hui-Xiong Dai
DOI:10.1039/d1cc03954g
日期:——
C3-Arylation of indoles with aryl ketones is accomplished via palladium-catalyzed ligand-promoted Ar–C(O) cleavage and subsequent C–H arylation of indole. Various (hetero)aryl ketones are compatible in this reaction, affording the corresponding 3-arylindoles in moderate to good yields. Further introduction of an indole moiety into the natural products desoxyestrone and evodiamine demonstrate the synthetic
Modulating Reactivity and Diverting Selectivity in Palladium-Catalyzed Heteroaromatic Direct Arylation Through the Use of a Chloride Activating/Blocking Group
作者:Benoît Liégault、Ivan Petrov、Serge I. Gorelsky、Keith Fagnou
DOI:10.1021/jo902515z
日期:2010.2.19
Through the introduction of an aryl chloride substituent, the selectivity of palladium-catalyzeddirectarylation may be diverted to provide alternative regioisomeric products in high yields. In cases where low reactivity is typically observed, the presence of the carbon−chlorine bond can serve to enhance reactivity and provide superior outcomes. From a strategic perspective, the C−Cl bond is easily
Ascorbic Acid as an Aryl Radical Inducer in the Gold‐Mediated Arylation of Indoles with Aryldiazonium Chlorides
作者:Ignacio Medina‐Mercado、Eric Omar Asomoza‐Solís、Eduardo Martínez‐González、Victor Manuel Ugalde‐Saldívar、Lydia Gabriela Ledesma‐Olvera、José Enrique Barquera‐Lozada、Virginia Gómez‐Vidales、Joaquín Barroso‐Flores、Bernardo A. Frontana‐Uribe、Susana Porcel
DOI:10.1002/chem.201904413
日期:2020.1.13
the development of protocols that facilitate the oxidative addition of gold to access mild cross-coupling processes mediated by this metal has increased. In this context, we report herein that ascorbicacid, a natural and readily accessible antioxidant, can be used to accelerate the oxidative addition of aryldiazoniumchlorides onto AuI . The aryl-AuIII species generated in this way, has been used
Metal-free, C–H arylation of indole and its derivatives with aryl diazonium salts by visible-light photoredox catalysis
作者:Ying-Peng Zhang、Xiao-Long Feng、Yun-Shang Yang、Bi-Xia Cao
DOI:10.1016/j.tetlet.2016.04.051
日期:2016.5
In this Letter, we present the Rhodamine B catalyzed direct C–Harylation of indole with aryl diazonium salts. This method only requires green light and roomtemperature.
Water-medium C–H activation over a hydrophobic perfluoroalkane-decorated metal-organic framework platform
作者:Yuan-Biao Huang、Min Shen、Xusheng Wang、Ping Huang、Ruiping Chen、Zu-Jin Lin、Rong Cao
DOI:10.1016/j.jcat.2015.10.012
日期:2016.1
as a hydrophobic platform to encapsulate ultrafine palladiumnanoparticles (Pd NPs) for C–H activation in water. The resultant Pd NPs stabilized by the perfluoroalkane exhibited high activity and regioselectivity in the direct C–H arylation of indoles in water. The introduction of perfluoroalkane chains into the mesoporous pores of NU-1000 provides hydrophobic surfaces to facilitate access of the reactants