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。
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
a transition metal, is described using a novel partner in the Suzuki–Miyaura couplingreaction catalyzed by Pd(OAc)2 and Ruphos as ligands. The products showed good to outstanding yields and broad functional group compatibility under optimal conditions. The sequentialsynthesis of non-symmetric terphenyls and the gram grade process highlight the approach's synthetic utility. DFT calculations have shown
A highly efficient method for the synthesis of aryl sulfonyl fluorides was developed from aryl sulfonyl chlorides using SO2F2 as fluoride source in up to 98% isolated yield under mild conditions. Gram scale experiments were also conducted, revealing the good practicality of this new protocol.
一种高效合成芳基磺酰氟的方法是从芳基磺酰氯中开发的,使用 SO 2 F 2作为氟化物源,在温和条件下分离收率高达 98%。还进行了克级实验,揭示了这种新协议的良好实用性。
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。
Acid-Mediated Imidazole-to-Fluorine Exchange for the Synthesis of Sulfonyl and Sulfonimidoyl Fluorides
作者:Marco T. Passia、Joachim Demaerel、Mostafa M. Amer、Alwin Drichel、Stefanie Zimmer、Carsten Bolm
DOI:10.1021/acs.orglett.2c03546
日期:2022.12.9
Sulfur(VI) fluoride motifs are important entities in organic chemistry. Typically, their syntheses involve the corresponding chlorides, which are often difficult to prepare and characterized by a poor storability due to the inherently weak S–Cl bond. Here, a single-step procedure for the preparation of sulfur(VI) fluorides starting from sulfonyl imidazoles as stable S(VI) reservoirs is described. By