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 three-component reaction of arenediazonium tetrafluoroborates, Na2S2O5, and N-fluorobenzenesulfonimide (NFSI). The reaction proceeds through a radical tandem process, affording various arenesulfonylfluorides in moderate to high yields. This protocol not only provides a complement to the previous fluorosulfonylation reactions, but also extends the applications of Sandmeyer reaction.
通过四氟硼酸壬二唑鎓,Na 2 S 2 O 5和N-氟苯磺酰亚胺(NFSI)的三组分反应,实现了无过渡金属的Sandmeyer型氟磺酰化反应。该反应通过自由基串联过程进行,以中等至高产率提供各种芳烃磺酰氟。该方案不仅为以前的氟磺酰化反应提供了补充,而且扩展了桑德迈尔反应的应用。
One-pot fluorosulfurylation of Grignard reagents using sulfuryl fluoride
作者:Cayo Lee、Nicholas D. Ball、Glenn M. Sammis
DOI:10.1039/c9cc08487h
日期:——
Herein, we report a new method for the one-pot syntheses of sulfonyl fluorides. Addition of an alkyl, aryl, or heteroaryl Grignard to a solution of sulfuryl fluoride at ambient temperature affords the desired sulfonyl fluorides in 18-78% yield. Furthermore, this method is applicable for in situ sequential reactions, whereby the Grignard reagent can be converted to the corresponding diarylsulfone, sulfonate
Liganding Functional Tyrosine Sites on Proteins Using Sulfur–Triazole Exchange Chemistry
作者:Jeffrey W. Brulet、Adam L. Borne、Kun Yuan、Adam H. Libby、Ku-Lung Hsu
DOI:10.1021/jacs.0c00648
日期:2020.5.6
LG for activating nucleophilic substitution reactions on tyrosine sites of proteins. Here, we probed tunability of SuTEx for fragment-based liganddiscovery by modifying the adduct group (AG) and LG with functional groups of differing electron-donating and -withdrawing properties. We discovered the sulfur electrophile is highly sensitive to the position of modification (AG versus LG), which enabled both
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。