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。
Fluorochemicals from fluorspar via a phosphate-enabled mechanochemical process that bypasses HF
作者:Calum Patel、Emy André-Joyaux、Jamie A. Leitch、Xabier Martínez de Irujo-Labalde、Francesco Ibba、Job Struijs、Mathias A. Ellwanger、Robert Paton、Duncan L. Browne、Gabriele Pupo、Simon Aldridge、Michael A. Hayward、Véronique Gouverneur
DOI:10.1126/science.adi1557
日期:2023.7.21
fluorochemicals—including elemental fluorine and nucleophilic, electrophilic, and radical fluorinating reagents—are prepared from hydrogen fluoride (HF). This highly toxic and corrosive gas is produced by the reaction of acid-grade fluorspar (>97% CaF 2 ) with sulfuric acid under harsh conditions. The use of fluorspar to produce fluorochemicals via a process that bypasses HF is highly desirable but remains
所有含氟化合物(包括元素氟以及亲核、亲电和自由基氟化试剂)均由氟化氢 (HF) 制备。这种剧毒和腐蚀性气体是由酸级萤石(>97% CaF2)在恶劣条件下与硫酸反应。使用萤石通过绕过 HF 的工艺来生产含氟化合物是非常理想的,但由于 CaF 的不溶性,仍然是一个未解决的问题2。受磷酸钙生物矿化的启发,我们在此公开了一种用磷酸氢二钾(K2羟基磷灰石4)在机械化学条件下。该过程提供了由结晶 K 组成的固体3(HPO4)F 和 K2− X 钙 y (采购订单3F) A (采购订单4) 乙 ,被发现适合形成硫-氟和碳-氟键。
Gladschtein et al., Zhurnal Obshchei Khimii, 1958, vol. 28, p. 2107,2110;engl.Ausg.S.2145,2146,2148