Cobalt-Catalyzed Remote C-4 Functionalization of 8-Aminoquinoline Amides with Ethers via C–H Activation under Visible-Light Irradiation. Access to α-Heteroarylated Ether Derivatives
作者:Tubai Ghosh、Pintu Maity、Brindaban C. Ranu
DOI:10.1021/acs.orglett.7b03955
日期:2018.2.16
A cobalt-catalyzedselective remote C-4alkylation of 8-aminoquinoline amides via C–H activation under irradiation with a CFL lamp in the presence of eosin Y at room temperature has been achieved. A series of pharmaceutically important C-4quinoline amide-substituted ether derivatives has been obtained by this procedure. The C-4 functionalization of quinoline amides with inert ether is of much significance
Iron-Catalyzed Remote C–H Alkylation of 8-Amidoquinolines with Cycloalkanes
作者:Mingbo Wu、Naohiko Yoshikai、Wengang Xu
DOI:10.1055/a-1337-5416
日期:2021.9
An iron-catalyzed, peroxide-mediated cross-dehydrogenative coupling between 8-amidoquinolines and cycloalkanes has been developed for the site-selective alkylation of the quinoline nucleus at the C5 position. The reaction tolerates various substituted N-(quinolin-8-yl)benzamides and N-(quinolin-8-yl)alkylamides, affording the corresponding C5-alkylation products in good yields. On the basis of control
We have developed a synthesis of 1,2‐substituted adamantane carboxylic acids and further bridged cycloalkanes (cage compounds) by palladium acetate‐catalyzed C−H bond oxidation. Acetoxylation of cycloalkane framework was performed using picolylamide as a directing group. Modification of the substrate, ligand design and variation of reaction conditions enabled us to study the mechanism of acetoxylation
The regioselective C−H amination of quinoline amides (C5) and imidazopyridines (C3) under transition-metal-free conditions at room temperature with a high degree of functional group tolerance is reported. The C−H amination promoted by visible light in presence of photo catalyst with wide range of heteroamines makes the present protocal more sustainable.
We have developed an effective approach to 1,2‐disubstituted diamondoids by palladium(II) acetate catalyzed functionalization of CH bond. Selective mono‐arylation of the adamantane framework was achieved using picolylamide as a directing group in yields up to 87 %. Kinetic studies in combination with deuterium labeling experiments, competitive experiments and mass spectrometry contribute to the mechanistic