介绍了由相应的(杂)芳基硼酸双催化合成磺酰氟。我们证明了带有双芳基砜配体骨架的有机铋(III)催化剂在催化循环中通过不同的规范有机金属步骤旋转,而不会改变氧化态。所有步骤都已经过验证,包括将 SO 2催化插入Bi-C 键,从而形成结构独特的 O 键亚磺酸铋复合物。该催化方案为各种芳基和杂芳基硼酸提供了出色的收率,显示出广泛的官能团耐受性。
Sulfonyl Fluoride Synthesis through Electrochemical Oxidative Coupling of Thiols and Potassium Fluoride
作者:Gabriele Laudadio、Aloisio de A. Bartolomeu、Lucas M. H. M. Verwijlen、Yiran Cao、Kleber T. de Oliveira、Timothy Noël
DOI:10.1021/jacs.9b06126
日期:2019.7.31
Sulfonylfluorides are valuable synthetic motifs for a variety of applications, among which sulfur(VI) fluoride exchange-based “click chemistry” is currently the most prominent. Consequently, the development of novel and efficient synthetic methods to access these functional groups is of great interest. Herein, we report a mild and environmentally benign electrochemical approach to prepare sulfonyl
One-pot palladium-catalyzed synthesis of sulfonyl fluorides from aryl bromides
作者:Alyn T. Davies、John M. Curto、Scott W. Bagley、Michael C. Willis
DOI:10.1039/c6sc03924c
日期:——
A mild, efficientsynthesis of sulfonyl fluorides fromaryl and heteroaryl bromides utilizing palladium catalysis is described. The process involves the initial palladium-catalyzed sulfonylation of arylbromides using DABSO as an SO2 source, followed by in situ treatment of the resultant sulfinate with the electrophilic fluorine source NFSI. This sequence represents the first general method for the
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。
A study of the reactivity of S<sup>(VI)</sup>–F containing warheads with nucleophilic amino-acid side chains under physiological conditions
作者:H. Mukherjee、J. Debreczeni、J. Breed、S. Tentarelli、B. Aquila、J. E. Dowling、A. Whitty、N. P. Grimster
DOI:10.1039/c7ob02028g
日期:——
Despite numerous examples of the successful deployment of SFs as covalent probe compounds, a detailed exploration of the factors influencing the stability and reactivity of SFs has not yet appeared. In this work we present an extensive study on the influence of steric and electronic factors on the reactivity and stability of the SF and related SVI–F groups. While SFs react rapidly with N-acetylcysteine
磺酰氟(SFs)最近已成为有希望的针对蛋白质的目标共价修饰的战斗部。尽管有许多成功地将SFs用作共价探针化合物的例子,但尚未出现对影响SFs稳定性和反应性的因素的详细探讨。在这项工作中,我们对空间和电子因素对SF和相关的S VI –F组的反应性和稳定性的影响进行了广泛的研究。尽管SF与N-乙酰半胱氨酸快速反应,但发现生成的加合物不稳定,因此SF不适合持久地共价抑制半胱氨酸残基。相反,SFs可以与N-乙酰酪氨酸和N一起提供稳定的加合物。-乙酰赖氨酸;此外,我们表明,可以通过调节弹头的电子特性来预测地调节芳基磺酰氟对这些亲核氨基酸的反应性。当共价反应发生在蛋白质结合口袋中时,这些趋势在很大程度上得以保留。我们还获得了描述ATP类似物5'- O -3-((氟磺酰基)苯甲酰基)腺苷(m-FSBA)。已证明高反应性战斗部在缓冲水溶液中的水解方面不稳定,这表明战斗部的反应性必须仔细调整以提供最佳的蛋白
Arenesulfonyl fluoride synthesis via one-pot copper-free Sandmeyer-type three-component reaction of aryl amine, K2S2O5, and NFSI
作者:Zhanhu Ma、Lingling Shan、Xiaoyu Ma、Xiaojun Hu、Yong Guo、Qing-Yun Chen、Chao Liu
DOI:10.1016/j.jfluchem.2022.109948
日期:2022.2
A one-pot procedure for the synthesis of arenesulfonyl fluorides from arylamine is developed with K2S2O5 and N-fluorobenzenesulfonimide (NFSI) as the sulfur dioxide surrogate and fluorine source, respectively. This method realizes the direct introduction of sulfonyl fluoride groups into arenes from abundant arylamines under transition-metal-free catalysis conditions, and features its mild and practical
采用 K 2 S 2 O 5和 N-氟苯磺酰亚胺 (NFSI) 分别作为二氧化硫替代物和氟源,开发了一种从芳胺合成芳基磺酰氟的一锅法。该方法实现了在无过渡金属催化条件下从丰富的芳胺中直接将磺酰氟基团引入芳烃中,具有条件温和实用、官能团耐受性好的特点。