Visible-Light Copper Nanocluster Catalysis for the C–N Coupling of Aryl Chlorides at Room Temperature
作者:Arunachalam Sagadevan、Atanu Ghosh、Partha Maity、Omar F. Mohammed、Osman M. Bakr、Magnus Rueping
DOI:10.1021/jacs.2c02218
日期:2022.7.13
bond-forming reactions of aryl chlorides under visible-light irradiation at room temperature. A range of N-heterocyclic nucleophiles and electronically and sterically diverse aryl/hetero chlorides react in this new Cu61NC-catalyzed process to afford the C–Ncoupling products in good yields. Mechanistic studies indicate that a single-electron-transfer (SET) process between the photoexcited Cu61NC complex and aryl
在交叉偶联反应中活化芳基氯是有机合成中长期存在的挑战,工业界对此非常感兴趣。超小(<3 nm)、原子级精确的纳米团簇(NCs)由于其高表面积和不饱和的活性位点而被认为是最有前途的催化剂之一。在此,我们介绍了一种基于铜纳米团簇的催化剂 [Cu 61 (S t Bu) 26 S 6 Cl 6 H 14 ] (Cu 61 NC),它能够在可见光照射下使芳基氯化物发生 C-N 键形成反应。室内温度。范围为N-杂环亲核试剂和电子和空间上不同的芳基/杂氯化物在这种新的 Cu 61 NC 催化过程中反应,以良好的收率提供 C-N 偶联产物。机理研究表明,光激发的 Cu 61 NC 配合物和芳基卤化物之间的单电子转移 (SET) 过程能够实现 C-N-芳基化反应。
[EN] 1,2,4-TRIS-SUBSTITUTED BENZENE COMPOUND AND METHOD FOR PRODUCING SAME, AND ORGANIC ELECTROLUMINESCENT ELEMENT<br/>[FR] COMPOSÉ BENZÉNIQUE TRISUBSTITUÉ EN POSITIONS 1, 2 ET 4 ET SON PROCÉDÉ DE PRODUCTION, ET ÉLÉMENT ÉLECTROLUMINESCENT ORGANIQUE
Aryl Methyl Sulfone Construction from Eco‐Friendly Inorganic Sulfur Dioxide and Methyl Reagents
作者:Ming Wang、Jiaoyan Zhao、Xuefeng Jiang
DOI:10.1002/cssc.201802919
日期:2019.7.5
for the construction of significant functional methylsulfones, in which introduction of sulfur dioxide at the last stage was successfully achieved in one step. Inorganic sodium metabisulfite was used as an eco‐friendly sulfur dioxide source. Green dimethyl carbonate was employed as methyl reagent in this transformation. Diverse functional methylsulfones were obtained from various readily available