Minisci aroylation of N-heterocycles using choline persulfate in water under mild conditions
作者:Joydev K. Laha、Ummehani Tinwala、Mandeep Kaur Hunjan
DOI:10.1039/d1nj05068k
日期:——
objective of this work was to develop persulfate mediated oxidative transformations that can be performed nearly at room temperature using water as a solvent. This report describes modified Minisci aroylation of isoquinolines with arylglyoxylic acids using choline persulfate and its pre-composition (choline acetate and K2S2O8) in water at 40 °C. A few other nitrogen heterocycles were also utilized affording
金属过硫酸盐介导的热氧化有机转化总是需要更高的温度并且经常使用有机溶剂。这项工作的目的是开发过硫酸盐介导的氧化转化,它可以在几乎室温下使用水作为溶剂进行。本报告描述了使用过硫酸胆碱及其预组合物(醋酸胆碱和 K 2 S 2 O 8) 在 40 °C 的水中。还使用了一些其他氮杂环,以良好到极好的产率提供各种芳酰化产物。与可能产生金属盐副产物的金属过硫酸盐不同,本文报道的化学的一个关键特征包括使用含有可生物降解胆碱的环境无害的过硫酸胆碱作为抗衡阳离子,Minisci 反应在 40 °C 下作为唯一的溶剂证明,和过硫酸盐的非常规活化。
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.
Acyl Radicals from Terminal Alkynes: Photoredox-Catalyzed Acylation of Heteroarenes
作者:Shaista Sultan、Masood Ahmad Rizvi、Jaswant Kumar、Bhahwal Ali Shah
DOI:10.1002/chem.201801628
日期:2018.7.25
A photoredox‐mediated acylation reaction of electron deficient heteroarenes with terminalalkynes is reported. The method relies on oxidative cleavage of phenylacetylenes for generation of acylradicals as a key enabling feature. The reaction is regioselective with broad substrate scope. Quantum yield investigations support a radical chain mechanism.
Novel total syntheses of oxoaporphine alkaloids enabled by mild Cu-catalyzed tandem oxidation/aromatization of 1-Bn-DHIQs
作者:Bo Zheng、Hui-Ya Qu、Tian-Zhuo Meng、Xia Lu、Jie Zheng、Yun-Gang He、Qi-Qi Fan、Xiao-Xin Shi
DOI:10.1039/c8ra05338c
日期:——
Noveltotalsyntheses of oxoaporphine alkaloids such as liriodenine, dicentrinone, cassameridine, lysicamine, oxoglaucine and O-methylmoschatoline were developed. The key step of these totalsyntheses is Cu-catalyzed conversion of 1-benzyl-3,4-dihydro-isoquinolines (1-Bn-DHIQs) to 1-benzoyl-isoquinolines (1-Bz-IQs) via tandem oxidation/aromatization. This novel Cu-catalyzed conversion has been studied