economical phosphorylation of thiols has been achieved via halogen- and metal-free K2CO3-promoted aerobic oxidative cross-coupling of trialkyl phosphites, dimethyl phenylphosphonite, or methyl diphenylphosphinite with thiophenols using air as the oxidant at room temperature. This transformation provides a straightforward route to the construction of phosphorus–sulfur bonds with wide functional group compatibility
通过在室温下使用空气作为氧化剂,通过无卤和无金属的K 2 CO 3促进亚磷酸三烷基酯,二甲基苯基亚膦酸酯或甲基二苯基亚膦酸酯与硫代苯酚的需氧氧化交叉偶联,实现了硫醇的便捷,实用和经济的磷酸化。这种转变为构建具有广泛官能团相容性的磷硫键提供了一条简单的途径,该方法可提供高达94%的收率的硫代磷酸酯。
Electrochemically driven synthesis of phosphorothioates from trialkyl phosphites and aryl thiols
作者:Lingmin Zhao、Xin Liu、Shuxian Shi、Zengzhi Wu、Xiaqun Guo、Zhenlu Shen、Meichao Li
DOI:10.1016/j.electacta.2021.138748
日期:2021.9
elegant protocol for synthesis of phosphorothioates from trialkyl phosphites and aryl thiols via indirect electrochemical oxidation mediated by KI has been successfully developed. KI as a redox mediator, enabled the reaction of trialkyl phosphites and aryl thiols effectively at low potential. Cyclic voltammetry and in situ FTIR were applied to investigate the electrocatalytic activity of KI for the cross-coupling
通过 KI 介导的间接电化学氧化从亚磷酸三烷基酯和芳基硫醇合成硫代磷酸酯的简便而优雅的方案已被成功开发。KI 作为氧化还原介质,可以在低电位下有效地实现亚磷酸三烷基酯和芳基硫醇的反应。应用循环伏安法和原位FTIR 来研究 KI 对亚磷酸三烷基酯与芳基硫醇交叉偶联的电催化活性。在最佳条件下以良好到极好的收率获得了多种硫代磷酸酯。该策略为构建具有良好官能团兼容性和广泛底物范围的 P-S 键提供了便利。
Magnetically recyclable Cu-BTC@Fe<sub>3</sub>O<sub>4</sub> composite-catalyzed C<sub>(aryl)</sub>–S–P bond formation using aniline, P(O)H compounds and sulfur powder
Cu-BTC@Fe3O4 composite was prepared and exhibited good catalytic activity toward the synthesis of S-aryl phosphorothioates. This three-component reaction involved the coupling of in situ generated aryl diazonium salts from aniline, R2P(O)H, and sulfur powder, allowing the facile and direct formation of C(aryl)-S-P bonds. A broad scope of substrates survived the reaction conditions to afford the corresponding
An efficient Cs2CO3‐catalyzedoxidativecoupling of thiols with phosphonates and arenes that uses molecular oxygen as the oxidant is described. These reactions provide not only a novel alkali metal salt catalyzed aerobic oxidation, but also an efficient approach to thiophosphates and sulfenylarenes, which are ubiquitously found in pharmaceuticals and pesticides. The reaction proceeds under simple and
描述了使用分子氧作为氧化剂的高效Cs 2 CO 3催化的硫醇与膦酸酯和芳烃的氧化偶联。这些反应不仅提供了一种新颖的碱金属盐催化的好氧氧化反应,而且提供了一种在制药和农药中普遍发现的硫代磷酸盐和亚硫基芳烃的有效方法。该反应在简单温和的反应条件下进行,可耐受各种官能团,适用于生物活性分子的后期合成和修饰。