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。
Cs<sub>2</sub>
CO<sub>3</sub>
-Catalyzed Aerobic Oxidative Cross-Dehydrogenative Coupling of Thiols with Phosphonates and Arenes
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。
Cu(II)/Proline-Catalyzed Reductive Coupling of Sulfuryl Chloride and P(O)–H for P–S–C Bond Formation
作者:Xinghua Zhang、Dungai Wang、Duo An、Boshi Han、Xiang Song、Liang Li、Gaoqi Zhang、Lixian Wang
DOI:10.1021/acs.joc.7b02608
日期:2018.2.2
A considerably improved method for the Cu-catalyzed coupling of sulfurylchloride with P(O)–H was described. Using commercially available l-proline as the ligand decreased the precatalyst loading, broadened the substrate scope and greatly promoted the efficiency of the coupling reaction. Moreover, gram-scale preparation, easy-to handle and recyclable catalyst featured this transformation.
Visible‐Light Mediated Arbuzov‐Like Reaction with Thiophenols
作者:Rajjakfur Rahaman、Akshay M. Nair、Chandra M. R. Volla
DOI:10.1002/chem.202201290
日期:2022.9.6
visible light mediated addition of sulfenyl radicals to trialkyl phosphites to access functionalized phosphorothioates. The use of cheap and readily available Eosin Y as a photocatalyst under mild energy efficient conditions bypassing the use of external oxidants forms the chief highlight of the work. The protocol is scalable and mechanistic studies indicate that the reaction proceeds through an ionic-Arbuzov
我们在此公开了一种可见光介导的亚磷酸三烷基酯加成亚硫基自由基来获得功能化的硫代磷酸酯。在温和的节能条件下,绕过使用外部氧化剂,使用廉价且容易获得的曙红 Y 作为光催化剂,这是这项工作的主要亮点。该协议是可扩展的,机械研究表明,该反应通过磷酰基自由基的离子-Arbuzov 样途径进行。