Free-Radical-Promoted Site-Selective C–H Silylation of Arenes by Using Hydrosilanes
作者:Zhengbao Xu、Li Chai、Zhong-Quan Liu
DOI:10.1021/acs.orglett.7b02717
日期:2017.10.20
silylation using hydrosilane was developed. This cross-dehydrogenative silylation enables both electron-rich and electron-poor aromatics to afford the desired arylsilanes in unique selectivity. A “para-selectivity” was observed by examination of over 54 examples. This exceptional orientation is quite different from that in Friedel–Crafts C–H silylation or transition-metal-catalyzed dehydrogenative silylation
Rhodium(III)‐Catalyzed Redox‐Neutral Coupling of α‐Trifluoromethylacrylic Acid with Benzamides through Directed C−H Bond Cleavage
作者:Risa Yoshimoto、Yoshinosuke Usuki、Tetsuya Satoh
DOI:10.1002/asia.201901776
日期:2020.3.16
A rhodium(III)-catalyzedredox-neutralcoupling of α-trifluoromethylacrylic acid with bezamides proceeds smoothly accompanied by amide-directed C-H bond cleavage to produce β-[2-(aminocarbonyl)phenyl]-α-trifluoromethylpropanoic acid derivatives. One of the products can be transformed to a trifluoromethyl substituted heterocyclic compound. In addition, the redox-neutralcoupling of α-trifluoromethylacrylic
Synthesis of CF<sub>3</sub>-Containing Isoindolinone Derivatives through Rhodium-catalyzed Oxidative Coupling of Benzamides with 2-Trifluoromethylacrylate
The oxidativecoupling of benzamides with methyl 2-trifluoromethylacrylate proceeds smoothly under rhodium(III) catalysis to produce trifluoromethyl-substituted isoindolinone derivatives. The catal...
A phosphine-free Pd catalyst for the selective double carbonylation of aryl iodides
作者:Verónica de la Fuente、Cyril Godard、Ennio Zangrando、Carmen Claver、Sergio Castillón
DOI:10.1039/c2cc17124d
日期:——
The first phosphine-free Pd-catalysed double carbonylation of aryl iodides is reported as a general and practical method, giving excellent conversions and selectivities for a wide range of aryl iodides and amine nucleophiles under atmospheric CO pressure.
Covalent triazine framework-supported palladium as a ligand-free catalyst for the selective double carbonylation of aryl iodides under ambient pressure of CO
Carbonylation of aryl iodides with amines at atmospheric pressure of CO, catalyzed by Pd/CTFs (covalent triazine frameworks) without any specific additives, leads to the highly selective synthesis of [small alpha]-ketoamides.