the first time as a renewable medium for Pd(OAc)2‐catalysed Suzuki–Miyaura cross‐coupling at room temperature. This method offers a simple and sustainable synthesis of biaryls from aryl halides and arylboronicacids under ligand‐ and external base‐free aerobic and ambient conditions. This method has been found effective for both activated and unactivated aryl halides in the production of biaryls with
An Improvement of Nickel Catalyst for Cross-coupling Reaction of Arylboronic Acids with Aryl Carbonates by Using a Ferrocenyl Bisphosphine Ligand
作者:Ryoichi Kuwano、Ryosuke Shimizu
DOI:10.1246/cl.2011.913
日期:2011.9.5
Aryl carbonates work as electrophilic substrates for the Suzuki–Miyaura reaction in the presence of the nickel catalyst, which is generated from [Ni(cod)2] and ferrocenyl bisphosphine, DCyPF. The nickel catalyst allowed the cross-coupling reaction of arylboronic acids with non-benzo-fused aryl carbonates as well as naphthyl substrates.
Suzuki–Miyaura Cross-Coupling of 1,8-Diaminonaphthalene (dan)-Protected Arylboronic Acids
作者:Yuichiro Mutoh、Kensuke Yamamoto、Shinichi Saito
DOI:10.1021/acscatal.9b03667
日期:2020.1.3
Suzuki–Miyaura cross-coupling reaction of 1,8-diaminonaphthalene (dan)-protected arylboronicacids in the presence of KOt-Bu, which does not require the removal of the dan moiety. Notably, the use of aryl-B(dan) in the Suzuki–Miyaura reaction provides a complementary solution to the protodeboronation problems. The base KOt-Bu plays a crucial role for the promotion of these cross-coupling reactions as
我们报道了在存在KO t -Bu的情况下1,8-二氨基萘(dan)保护的芳基硼酸的Suzuki-Miyaura交叉偶联反应,该反应不需要去除dan部分。值得注意的是,在Suzuki-Miyaura反应中使用芳基-B(dan)可为原脱硼问题提供补充解决方案。碱KO t -Bu在促进这些交叉偶联反应中起着至关重要的作用,因为它能够形成硼酸盐。该反应方案扩展到了4-[((pin)B] C 6 H 4 -B(dan)的一锅顺序Suzuki-Miyaura交叉偶联反应,其中“反应性较低”的芳基-B(dan)部分优先交叉耦合。
Practical One-Pot Preparation of Magnesium Di(hetero)aryl- and Magnesium Dialkenylboronates for Suzuki-Miyaura Cross-Coupling Reactions
作者:Benjamin A. Haag、Christoph Sämann、Anukul Jana、Paul Knochel
DOI:10.1002/anie.201103022
日期:2011.8.1
Mg for B: An atom‐economical one‐potsynthesis by direct magnesium insertion in the presence of B(OBu)3 and LiCl allows a broad range of functionalized (hetero)aryl and alkenyl bromides to be converted into magnesium diorganoboronates 2, which undergo Suzuki–Miyauracross‐couplingreactions with various aryl (pseudo)halides (see scheme). Both aryl groups of 2 are transferred and furnish the products
Phosphine oxides as stabilizing ligands for the palladium-catalyzed cross-coupling of potassium aryldimethylsilanolates
作者:Scott E. Denmark、Russell C. Smith、Steven A. Tymonko
DOI:10.1016/j.tet.2007.02.017
日期:2007.6
The palladium-catalyzed cross-coupling reaction of potassium (4-methoxyphenyl) dimethylsilanolate (K(+)1(-)) with aryl bromides has been demonstrated using triphenylphosphine oxide as a stabilizing ligand. Unsymmetrical biaryls can be prepared from a variety of aryl bromides in good yield with short reaction times. Qualitative kinetic studies compared effects of different phosphine oxides on the rate of cross-coupling and established the beneficial effect of these ligands in the reaction of electron-rich arylsilanolates. The improved yield and reproducibility of the cross-coupling of several bromides was demonstrated by direct comparison of reactions performed with and without triphenylphosphine oxide under non-rigorous exclusion of oxygen. (C) 2007 Elsevier Ltd. All rights reserved.