Synergistic cooperative effect of CF<sub>3</sub>SO<sub>2</sub>Na and bis(2-butoxyethyl)ether towards selective oxygenation of sulfides with molecular oxygen under visible-light irradiation
作者:Kai-Jian Liu、Zheng Wang、Ling-Hui Lu、Jin-Yang Chen、Fei Zeng、Ying-Wu Lin、Zhong Cao、Xianyong Yu、Wei-Min He
DOI:10.1039/d0gc02663h
日期:——
visible-light-initiated oxygenation of sulfides at ambient temperature under transition-metal-, additives-free and minimal solvent conditions. The synergistic catalytic efforts between CF3SO2Na and 2-butoxyethyl ether represents the key promoting factor for the reaction.
一种安全,实用,环保的方法,可在环境温度下,无过渡金属,无添加剂且溶剂最少的条件下,通过可见光引发的硫化物氧合转换合成亚砜和砜。CF 3 SO 2 Na和2-丁氧基乙基醚之间的协同催化作用是反应的关键促进因素。
A Class of Amide Ligands Enable Cu-Catalyzed Coupling of (Hetero)aryl Halides with Sulfinic Acid Salts under Mild Conditions
作者:Jinlong Zhao、Songtao Niu、Xi Jiang、Yongwen Jiang、Xiaojing Zhang、Tiemin Sun、Dawei Ma
DOI:10.1021/acs.joc.8b00888
日期:2018.6.15
The amidederivedfrom 4-hydroxy-l-proline and 2,6-dimethylaniline is a powerful ligand for Cu-catalyzed coupling of (hetero)aryl halides with sulfinic acidsalts, allowing the formation of a wide range of (hetero)aryl sulfones from the corresponding (hetero)aryl halides at considerably low catalytic loadings. The coupling of (hetero)aryl iodides and sodium methanesulfinate proceeds at room temperature
HETEROCYCLIC CARBOXYLIC ACID AMIDE LIGAND AND APPLICATIONS THEREOF IN COPPER CATALYZED COUPLING REACTION OF ARYL HALOGENO SUBSTITUTE
申请人:CE Pharm CO., LTD.
公开号:US20190127337A1
公开(公告)日:2019-05-02
Provided are a heterocyclic carboxylic acid amide ligand and applications thereof in a copper catalyzed coupling reaction. Specifically, provided are uses of a compound represented by formula (I), definitions of radical groups being described in the specifications. The compound represented by formula (I) can be used as the ligand in the copper catalyzed coupling reaction of the aryl halogeno substitute, and is used or catalyzing the coupling reaction for forming the aryl halogeno substitute having C—N, C—O, C—S and other bonds.
revealed as the major pathway. DFT calculations indicate that the formation of a radical anion via nucleophilic addition of alkoxide to the aryl radical is the key step in determining the observed chemoselectivity.
开发了一种新的芳基甲基砜和醇的正式交叉偶联,通过 S RN 1 途径提供烷基芳基醚。使用这种方法作为关键步骤,有效地制备了两种市售的抗结核药物。二甲基阴离子引发的自由基链过程被揭示为主要途径。DFT 计算表明,通过醇盐与芳基的亲核加成形成自由基阴离子是确定观察到的化学选择性的关键步骤。
Palladium-Catalyzed Sulfination of Aryl and Heteroaryl Halides: Direct Access to Sulfones and Sulfonamides
作者:Andrei Shavnya、Steven B. Coffey、Aaron C. Smith、Vincent Mascitti
DOI:10.1021/ol403072r
日期:2013.12.20
A novel palladium-catalyzed sulfination of aryl and heteroaryl halides is described. This reaction operates under mild conditions and provides access to a wide range of aryl and heteroaryl sulfinates, a useful and versatile class of synthetic intermediates. Capitalizing on this sulfination reaction, one-pot protocols allowing direct access to sulfones and sulfonamides have also been developed. The