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
METHOD FOR PRODUCING FLUORINATED ALKANE, METHOD FOR SEPARATING AND RECOVERING AMIDINE BASE, AND METHOD FOR USING RECOVERED AMIDINE BASE
申请人:Kanto Denka Kogyo Co., Ltd.
公开号:US20180118642A1
公开(公告)日:2018-05-03
The present invention provides: a method for producing a fluorinated alkane represented by the formula (2): R
2
—F, wherein an alcohol having 3 to 5 carbon atoms is fluorinated by a fluorinating agent represented by the formula (1): R
1
SO
2
F in the absence of a solvent, and in the presence of a base selected from the group consisting of an amidine base and a phosphazene base; a method for separating and recovering an amidine base from an amidine base-sulfonate complex represented by the following formula (5); and a method for using a recovered amidine base. In the formula, R
1
represents a methyl group, an ethyl group or an aromatic group, R
2
represents an alkyl group having 3 to 5 carbon atoms, and n is 0 or 2.
Die elektrochemische Fluorierung von Alkansulfonamiden und Alkandisulfonamiden
作者:P. Satori、C. Jünger
DOI:10.1016/0022-1139(96)03478-1
日期:1996.7
Alkane sulphonylamides and disulphonylamides are stable in anhydrous (HF)x and undergo quantitative fission of S-N bonds during electrochemical fluorination. Besides NF3, the corresponding perfluoroalkane sulphonyl fluorides and disulphonyl fluorides are formed.
Flash vacuum pyrolysis of stabilised phosphorus ylides. Part 12.1 Extrusion of Ph3P from sulfonyl ylides and reactivity of the resulting sulfonyl carbenes
作者:R. Alan Aitken、Martin J. Drysdale、George Ferguson、Alan J. Lough
DOI:10.1039/a707948f
日期:——
Twelve sulfonyl stabilised phosphorus ylides have been prepared and their behaviour upon flash vacuum pyrolysis at 600 °C has been examined. Examples with an arylsulfonyl substituent undergo loss of Ph3PO to give intractable products but those with an arylmethylsulfonyl substituent separately lose Ph3P and SO2 to give products consistent with the intermediacy of sulfonyl carbenes. X-Ray structure determinations of one ylide from each series show a more significant P–O non-bonding interaction in the first case, providing some explanation for the different thermal reactivity.
Electrochemical Synthesis of Sulfonyl Fluorides with Triethylamine Hydrofluoride
作者:Lei Zhang、Xu Cheng、Qi‐Lin Zhou
DOI:10.1002/cjoc.202200112
日期:2022.7.15
manufacture diverse fluoro chemicals. The Et3N-3HF complex is a liquid HF with improve safety. In this work, we report electrochemical synthesis of a series of sulfonyl fluoride with Et3N-3HF as fluoride source. The sulfinic salt is a smell-less, non-volatile, and air-stable sulfur source in this reaction. With the combination of Et3N-3HF and aryl/alkyl sulfinic salt, the sulfonyl fluorides are achieved without
氢氟酸是工业上首选的氟化物来源,广泛应用于制造各种含氟化学品。Et 3 N-3HF 复合物是一种提高安全性的液体 HF。在这项工作中,我们报道了以 Et 3 N-3HF 作为氟化物源的一系列磺酰氟的电化学合成。在该反应中,亚磺酸盐是一种无味、不挥发且对空气稳定的硫源。通过 Et 3 N-3HF 和芳基/烷基亚磺酸盐的组合,无需使用外部氧化剂即可获得磺酰氟。此外,我们在涉及 Pd 催化的 C-S 交叉偶联和 S-F 键形成的串联反应中展示了进一步的优势。包括氨基酸、杂环、卤化物在内的多种官能团具有良好的耐受性。