Regiocontroled Palladium-Catalysed Direct Arylation at Carbon C2 of Benzofurans using Benzenesulfonyl Chlorides as the Coupling Partners
作者:Lenka Loukotova、Kedong Yuan、Henri Doucet
DOI:10.1002/cctc.201301077
日期:2014.3.10
products together with C2,C3 diarylation products. We found that the use of benzenesulfonylchlorides instead of aryl halides as the coupling partner allows for controlling the regioselectivity of the palladium‐catalysed arylation of benzofurans in favour of carbon C2. This method tolerates a variety of substituents on the benzenesulfonyl derivative.
Visible light mediated desilylative C(sp<sup>2</sup>)–C(sp<sup>2</sup>) cross-coupling reactions of arylsilanes with aryldiazonium salts under Au(<scp>i</scp>)/Au(<scp>iii</scp>) catalysis
作者:Indradweep Chakrabarty、Manjur O. Akram、Suprakash Biswas、Nitin T. Patil
DOI:10.1039/c8cc03925a
日期:——
Desilylative C(sp2)–C(sp2) cross-coupling reactions of arylsilanes with aryldiazonium salts under Au(I)/photoredox catalysis have been reported. The addition of Cu-salts as catalysts was found to be crucial for the success of this transformation.
Eco-Friendly Solvents for Palladium-Catalyzed Desulfitative CH Bond Arylation of Heteroarenes
作者:Anoir Hfaiedh、Kedong Yuan、Hamed Ben Ammar、Bechir Ben Hassine、Jean-François Soulé、Henri Doucet
DOI:10.1002/cssc.201403429
日期:2015.5.22
Herein, we report the Pd‐catalyzed regioselective direct arylation of heteroarenes in which benzenesulfonyl chlorides are used as coupling partners through a desulfitative cross‐coupling that can be performed in diethyl carbonate (DEC) or cyclopentyl methyl ether (CPME) as green and renewable solvents or even in neat conditions instead of dioxane or dimethylacetamide (DMA). Under these solvent conditions
Sulfonyl benzofurans and benzothiophenes having coronary vasodilator
申请人:SmithKline Corporation
公开号:US04117128A1
公开(公告)日:1978-09-26
The compounds are sulfonyl benzofurans and benzothiophenes having pharmacological activity, in particular, coronary vasodilator activity useful for the treatment of angina pectoris.
这些化合物是具有药理活性的磺酰基苯并呋喃和苯并噻吩,特别是具有冠状动脉扩张活性,可用于治疗心绞痛。
Direct α-Arylation of Benzo[<i>b</i>]furans Catalyzed by a Pd<sub>3</sub> Cluster
作者:Jian Yao、Lili Shao、Xi Kang、Manzhou Zhu、Xiaohong Huo、Xiaoming Wang
DOI:10.1021/acs.joc.3c02428
日期:2024.2.2
organic transformations and mechanistic investigations is still largely unexploited. Herein, we disclose the use of trinuclear palladium (Pd3Cl) species as an active catalyst for the direct C–H α-arylation of benzo[b]furans with aryl iodides to afford 2-arylbenzofurans in good yields under mild conditions. With this method, broad substrate adaptability was observed, and several drug intermediates were