Photoredox-Catalyzed Radical–Radical Cross-Coupling of Sulfonyl Chlorides with Trifluoroborate Salts
作者:Sheng-Ping Liu、Yan-Hong He、Zhi Guan
DOI:10.1021/acs.joc.3c01124
日期:2023.8.4
synthesis of sulfone compounds with diverse structures by visible-light-catalyzed radical–radical cross-coupling of sulfonylchlorides and trifluoroborate salts. Allyl, benzyl, vinyl, and aryl trifluoroborates can be successfully cross-coupled with (hetero)aryl and alkyl sulfonylchlorides, respectively. This strategy features redox neutrality, good substrate generality, simple operation, and benign reaction
In the presence of a chiral diamine, the magnesium salt of tolyl sulfone reacts with acetone at the α-carbon to afford the corresponding β-hydroxy adduct in good optical purity.
Highly Reactive Palladium-Catalyzed and Acetonitrile-Mediated Three-Component Reactions for Arylsulfone Synthesis
作者:Muhammad Aliyu Idris、Sunwoo Lee
DOI:10.1021/acs.orglett.2c03430
日期:2022.11.25
Arylsulfone groups play an important role in the synthesis of functionalized molecules. The acetonitrile-mediated three-componentreactions for arylsulfone synthesis were developed in the presence of a 0.00025 mol % palladium catalyst. Arylboronic acids reacted with potassium metabisulfite (K2S2O5) and benzyl bromide in the presence of LiF and a very low concentration of PdCl2 in acetonitrile solvents
芳基砜基团在功能化分子的合成中起着重要作用。乙腈介导的芳基砜合成三组分反应是在 0.00025 mol% 钯催化剂存在下开发的。芳基硼酸与焦亚硫酸钾 (K 2 S 2 O 5 ) 和苄基溴在存在 LiF 和极低浓度 PdCl 2的情况下,在乙腈溶剂中反应,以中等至良好的产率生成相应的苄基芳基砜。与K 2 S 2 O 5反应的各种芳基硼酸和碳亲电试剂在优化条件下生产所需的芳基砜。有人提出乙腈加速了芳基硼酸和 LiF 反应中芳基阴离子物质的产生。