acylation of quinolines and isoquinolines is described by use of arylmethanols as the acylating agents through a C–C bondformation via an oxidative cross-dehydrogenativecoupling (CDC) strategy. This C-aroylation reaction was carried out by use of K2S2O8 as oxidant and methyltrioctylammonium chloride (Aliquat 336) as a transfer agent in MeCN at 80 °C under transition-metal-free conditions.
Room Temperature Metal-Catalyzed Oxidative Acylation of Electron-Deficient Heteroarenes with Alkynes, Its Mechanism, and Application Studies
作者:Shweta Sharma、Mukesh Kumar、Ram A. Vishwakarma、Mahendra K. Verma、Parvinder Pal Singh
DOI:10.1021/acs.joc.8b01475
日期:2018.10.19
room-temperature, regioselective Minisci reaction for the acylation of electron-deficient heteroarenes with alkynes. The method has broad functional group compatibility and gives exclusively monoacylated products in good to excellent yields. The mechanistic pathway was analyzed based on a series of experiments confirming the involvement of a radical pathway. The 18O-labeling experiment suggested that water
Metal-, Photocatalyst-, and Light-Free Direct C–H Acylation and Carbamoylation of Heterocycles
作者:Matthew T. Westwood、Claire J. C. Lamb、Daniel R. Sutherland、Ai-Lan Lee
DOI:10.1021/acs.orglett.9b02679
日期:2019.9.6
Direct C-H acylations and carbamoylations of heterocycles can now be readily achieved without requiring any conventional metal, photocatalyst, electrocatalysis, or light activation, thus significantly improving on sustainability, costs, toxicity, waste, and simplicity of the operational procedure. These mild conditions are also suitable for gram-scale reactions and late-stage functionalizations of
Synthesis of quinolinyl and isoquinolinyl phenyl ketones as novel agonists for the cannabinoid CB2 receptor
作者:Bastien Reux、Tapio Nevalainen、Katri H. Raitio、Ari M.P. Koskinen
DOI:10.1016/j.bmc.2009.05.013
日期:2009.7
A series of quinolinyl and isoquinolinyl phenylketones was synthesized and their CB2 receptor-dependent G-protein activities were determined using the [35S]GTPγS binding assay. Both quinoline and isoquinoline derivatives exhibited similar CB2 receptor agonist activity, the most potent ligands being the 2-(Me2N)-phenyl substituted derivatives, which were also full agonists at the CB2-receptor.
Regiospecific Benzoylation of Electron-Deficient <i>N</i>-Heterocycles with Methylbenzenes via a Minisci-Type Reaction
作者:Wajid Ali、Ahalya Behera、Srimanta Guin、Bhisma K. Patel
DOI:10.1021/acs.joc.5b00501
日期:2015.6.5
coupling between electron-deficient N-heterocycles (isoquinoline, quinolines, and quinoxalines) and methylbenzenes leading to regiospecific C–aroylation has been accomplished using AlCl3 as the catalyst in the presence of oxidant TBHP. This protocol is a practical alternative to the classical Minisci reaction.