Acenaphthoimidazolylidene Gold Complex-Catalyzed Alkylsulfonylation of Boronic Acids by Potassium Metabisulfite and Alkyl Halides: A Direct and Robust Protocol To Access Sulfones
作者:Haibo Zhu、Yajing Shen、Qinyue Deng、Jiangbo Chen、Tao Tu
DOI:10.1021/acscatal.7b00860
日期:2017.7.7
A robust acenaphthoimidazolylidene gold complex is demonstrated as a highly efficient catalyst in the direct alkylsulfonylation of boronic acids. Remarkably, a wide range of highly reactive and unreactive C-electrophiles were well-tolerated to produce various (hetero)aryl-alkyl, aryl-alkenyl, and alkenyl-alkyl sulfones in satisfactory yields with 5 mol % catalyst loading. Along with the steric properties
Multicomponent Reductive Cross‐Coupling of an Inorganic Sulfur Dioxide Surrogate: Straightforward Construction of Diversely Functionalized Sulfones
作者:Yingying Meng、Ming Wang、Xuefeng Jiang
DOI:10.1002/anie.201911449
日期:2020.1.13
oxidants. Now, a multicomponent reductive cross-coupling involving an inorganic salt (sodium metabisulfite) for the straightforward construction of sulfones is disclosed. Both intramolecular and intermolecular reductive cross-couplings were comprehensively explored, and diverse sulfones were accessible from the corresponding alkyl and aryl halides. Intramolecular cyclic sulfones were systematically obtained
作者:Alex S. Deeming、Claire J. Russell、Alan J. Hennessy、Michael C. Willis
DOI:10.1021/ol403122a
日期:2014.1.3
The addition of Grignardreagents or organolithiumreagents to the SO2-surrogate DABSO generates a diverse set of metal sulfinates, suitable for direct conversion to sulfone products. The metal sulfinates can be trapped in situ with a wide range of C-electrophiles, including alkyl, allyl, and benzyl halides, epoxides, and (hetero)aryliodoniums.
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。