Arenesulfonyl Fluoride Synthesis via Copper-Catalyzed Fluorosulfonylation of Arenediazonium Salts
作者:Yongan Liu、Donghai Yu、Yong Guo、Ji-Chang Xiao、Qing-Yun Chen、Chao Liu
DOI:10.1021/acs.orglett.0c00484
日期:2020.3.20
We report herein a general and practical copper-catalyzed fluorosulfonylation reaction of a wide range of abundant arenediazonium salts to smoothly prepare various arenesulfonylfluorides using the 1,4-diazabicyclo[2.2.2]octane-bis(sulfur dioxide) adduct as a convenient sulfonyl source in combination with KHF2 as an ideal fluorine source and without the need for additional oxidants. Interestingly,
The first metal-free procedure for the synthesis of arylsulfonyl fluorides is reported. Under organo-photoredox conditions, aryl diazonium salts react with a readily available SO2 source (DABSO) to afford the desired product through simple nucleophilic fluorination. The reaction tolerates the presence of both electron-rich and -poor aryls and demonstrated a broad functional group tolerance. To shed
报道了合成芳基磺酰氟的第一个无金属程序。在有机光氧化还原条件下,芳基重氮盐与容易获得的 SO 2源 (DABSO)反应,通过简单的亲核氟化得到所需的产物。该反应耐受富电子和贫电子芳基的存在,并表现出广泛的官能团耐受性。为了阐明反应机理,结合了几种实验技术,包括荧光、核磁共振和 EPR 光谱以及 DFT 计算。
SuFEx-enabled, agnostic discovery of covalent inhibitors of human neutrophil elastase
作者:Qinheng Zheng、Jordan L. Woehl、Seiya Kitamura、Diogo Santos-Martins、Christopher J. Smedley、Gencheng Li、Stefano Forli、John E. Moses、Dennis W. Wolan、K. Barry Sharpless
DOI:10.1073/pnas.1909972116
日期:2019.9.17
We report here a SuFEx-enabled, agnostic approach for the discovery and optimization of covalent inhibitors of human neutrophil elastase (hNE). Evaluation of our ever-growing collection of SuFExable compounds toward various biological assays unexpectedly revealed a selective and covalent hNE inhibitor: benzene-1,2-disulfonyl fluoride. Synthetic derivatization of the initial hit led to a more potent
Pd-Catalyzed Conversion of Aryl Iodides to Sulfonyl Fluorides Using SO<sub>2</sub> Surrogate DABSO and Selectfluor
作者:Ariana L. Tribby、Ismeraí Rodríguez、Shamira Shariffudin、Nicholas D. Ball
DOI:10.1021/acs.joc.7b00051
日期:2017.2.17
conversion of aryl iodide to aryl sulfonyl fluorides using DABSO and Selectfluor has been developed generating aryl sulfonyl fluorides in good to excellent yields. The reaction results in the generation of electronically and sterically diverse sulfonyl fluorides. Additionally, sulfonyl fluorides can be converted to aryl sulfonamides and sulfonic esters using Cs2CO3 under mild conditions.
已开发出使用DABSO和Selectfluor一锅Pd催化的芳基碘化物向芳基磺酰氟的转化,生成芳基磺酰氟的产率非常好。该反应导致产生电子和空间上不同的磺酰氟。另外,可以在温和的条件下使用Cs 2 CO 3将磺酰氟转化为芳基磺酰胺和磺酸酯。