Electrochemically Enabled Chan–Lam Couplings of Aryl Boronic Acids and Anilines
作者:Ryan P. Wexler、Philippe Nuhant、Timothy J. Senter、Zachary J. Gale-Day
DOI:10.1021/acs.orglett.9b01434
日期:2019.6.21
The Chan–Lamreaction remains a highly utilized transformation for C–N bond formation. However, anilines remain problematic substrates due to their lower nucleophilicity. To address this problem, we developed an electrochemically mediated Chan–Lamcoupling of arylboronicacids and amines utilizing a dual copper anode/cathode system. The mild conditions identified have enabled the preparation of a
Visible-Light-Mediated Chan-Lam Coupling Reactions of Aryl Boronic Acids and Aniline Derivatives
作者:Woo-Jin Yoo、Tatsuhiro Tsukamoto、Shū Kobayashi
DOI:10.1002/anie.201500074
日期:2015.5.26
The copper(II)‐catalyzed aerobicoxidativecoupling reaction between aryl boronic acids and aniline derivatives was found to be improved significantly under visible‐light‐mediated photoredox catalysis. The substrate scope of this oxidative Chan–Lam reaction was thus expanded to include electron‐deficient aryl boronic acids as viable starting materials.
Diamines as interparticle linkers for silica–titania supported PdCu bimetallic nanoparticles in Chan–Lam and Suzuki cross-coupling reactions
作者:Babita Jamwal、Manpreet Kaur、Harsha Sharma、Chhavi Khajuria、Satya Paul、J. H. Clark
DOI:10.1039/c8nj05050c
日期:——
The remarkable synergetic effect between Pd and Cu, and basic nitrogen sites on the support effectively stabilize the nanoparticles and enhance the catalytic activity.
Pd和Cu之间的卓越协同效应,以及支撑物上的碱性氮位点有效地稳定了纳米颗粒,并增强了催化活性。
Copper immobilized at a covalent organic framework: an efficient and recyclable heterogeneous catalyst for the Chan–Lam coupling reaction of aryl boronic acids and amines
作者:Yi Han、Mo Zhang、Ya-Qing Zhang、Zhan-Hui Zhang
DOI:10.1039/c8gc02611d
日期:——
inexpensive reagents and was employed as an effective support for heterogeneous copper. It was demonstrated that the obtained Cu@PI-COF is a highly active heterogeneous catalyst which can effectively promote the Chan–Lamcouplingreaction of aryl boronic acids and amines in an open flask without the aid of any base or additive. In addition, the catalyst could be readily recovered from the reaction mixture