One-pot synthesis of sulfonyl (E)-stilbenes by nitrobenzene-mediated dimerizative desulfonation of benzylic sulfones
摘要:
A facile one-pot synthetic route for preparing sulfonyl (E)-stilbenes 4 is developed. The efficient route is realized by a nitrobenzene (PhNO2)-mediated dimerizative desulfonation of benzylic sulfones 3 in the presence of sodium hydride (NaH) in good yields. Some synthetic investigations of sulfonyl stilbenes 4 are also examined. (C) 2014 Elsevier Ltd. All rights reserved.
Application of Fundamental Organometallic Chemistry to the Development of a Gold-Catalyzed Synthesis of Sulfinate Derivatives
作者:Miles W. Johnson、Scott W. Bagley、Neal P. Mankad、Robert G. Bergman、Vincent Mascitti、F. Dean Toste
DOI:10.1002/anie.201400037
日期:2014.4.22
The development of a gold(I)‐catalyzed sulfination of aryl boronic acids is described. This transformation proceeds through an unprecedented mechanism which exploits the reactivity of gold(I)–heteroatom bonds to form sulfinate anions. Further in situ elaboration of the sulfinate intermediates leads to the corresponding sulfones and sulfonamides, two pharmacophores routinely encountered in drug discovery
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。
Photoinduced Synthesis of Bis‐Sulfonyl γ‐Arylated Ketones via DMAP/DDQ‐Mediated Stereogenic Conjugated Addition of α‐Sulfonyl Chalcones with Benzylic Sulfones
作者:Nai‐Chen Hsueh、Meng‐Yang Chang
DOI:10.1002/adsc.202201347
日期:2023.2.21
The DMAP/DDQ-mediated stereochemical conjugated addition of sulfonyl chalcones and benzylic sulfones under photolytic irradiation produces diverse bis-sulfonyl γ-arylated ketones with three contiguous stereogenic centers in a yield of 79%–92%. Herein, a plausible mechanism is proposed and discussed.