an air-stable dianthracenyl monophosphine ligand (diAnthPhos) which can be prepared in two steps from commercially available anthracene derivatives. The ligand exhibits excellent efficiency for palladium-catalyzed coupling reactions. In particular, Miyaura borylation of heterocycle-containing electrophiles can be facilitated employing the diAnthPhos ligand with a broad substrate scope and low catalyst
Transformations of Aryl Ketones via Ligand‐Promoted C−C Bond Activation
作者:Hanyuan Li、Biao Ma、Qi‐Sheng Liu、Mei‐Ling Wang、Zhen‐Yu Wang、Hui Xu、Ling‐Jun Li、Xing Wang、Hui‐Xiong Dai
DOI:10.1002/anie.202006740
日期:2020.8.17
The coupling of aromatic electrophiles (aryl halides, aryl ethers, aryl acids, aryl nitriles etc.) with nucleophiles is a core methodology for the synthesis of aryl compounds. Transformations of arylketones in an analogous manner via carbon–carbon bond activation could greatly expand the toolbox for the synthesis of aryl compounds due to the abundance of arylketones. An exploratory study of this
studied. A methodical experimental and theoretical analysis of different carbon-based Cu(I) materials in the context of the development of an efficient, general, scalable, and sustainable borylation reaction of aliphatic and aromatic halides has been performed. We have also examined the effect of microwave (MW) radiation in the preparation of these type of materials using sustainable graphite nanoplatelets
碳载催化剂被认为是调节金属催化中心活性的大分子配体。了解属性和控制金属与载体之间相互作用的因素后,可以对催化过程进行微调。尽管已经付出了巨大的努力来理解单原子贵金属的结合能和电荷转移,但是很少研究石墨烯表面与廉价和通用的Cu(I)盐的相互作用。不同碳基铜(I)材料已经在脂族和芳族卤化物的高效,通用,可扩展和可持续的硼化反应的发展中进行了研究。我们还检查了微波(MW)辐射在使用可持续石墨纳米片(GNP)作为载体的这类材料制备中的作用。对溶液中所有可能物种的详细分析表明,催化作用主要归因于有趣的协同Cu 2 O /石墨烯性能,这一点已得到广泛的理论研究的证实。我们通过DFT计算以较高的理论水平证明了石墨烯可增强金属在Cu 2中的反应性O对卤化物衍生物有利于自由基从卤素中脱离。此外,该材料能够稳定自由基中间体,从而提供使用均相Cu(I)催化反应所未观察到的意外途径。最后,我们证明了其他常见的基于
BENZOFURANYL- AND BENZOTHIENYL- PIPERAZINYL QUINOLINES AND METHODS OF THEIR USE
申请人:Venkatesan Aranapakam Mudumbai
公开号:US20090054454A1
公开(公告)日:2009-02-26
Benzofuranyl- and benzothienyl-piperzinyl quinoline derivatives and compositions containing such compounds are disclosed. Methods of using benzofuranyl- and benzothienyl-piperzinyl quinoline derivatives and compositions containing such composition in the treatment and/or prevention of serotonin-related disorders, such as depression and anxiety, are also disclosed. In addition, processes for the preparation of benzofuranyl- and benzothienyl-piperzinyl quinoline derivatives are disclosed.