Sulfonamide Synthesis via Calcium Triflimide Activation of Sulfonyl Fluorides
作者:Paramita Mukherjee、Cristian P. Woroch、Leah Cleary、Mark Rusznak、Ryan W. Franzese、Matthew R. Reese、Joseph W. Tucker、John M. Humphrey、Sarah M. Etuk、Sabrina C. Kwan、Christopher W. am Ende、Nicholas D. Ball
DOI:10.1021/acs.orglett.8b01520
日期:2018.7.6
A method using calcium triflimide [Ca(NTf2)2] as a Lewis acid to activate sulfonylfluorides toward nucleophilic addition with amines is described. The reaction converts a wide array of sterically and electronically diverse sulfonylfluorides and amines into the corresponding sulfonamides in good yield.
Sulfonic acid fluorides are prepared by reacting sulfonic acid halides with inorganic fluorides in an organic-aqueous phase. The reaction is carried out in the presence of catalytic amounts of an amine or an onium salt.
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。