Cross coupling of benzylammonium salts with boronic acids using a well-defined N-heterocyclic carbene–palladium(<scp>ii</scp>) precatalyst
作者:Tao Wang、Jiarui Guo、Xiaojuan Wang、Han Guo、Dingli Jia、Hengjin Wang、Lantao Liu
DOI:10.1039/c8ra10439e
日期:——
N-heterocyclic carbene–palladium(II)-catalyzed cross-coupling of benzylammonium salts with arylboronic acids for the synthesis of diarylmethane derivatives via C–Nbondactivation has been developed. Notably, in the presence of the easily prepared and bench-stable Pd-PEPPSI precatalyst, the Csp3–N bondactivation of the benzylammonium salt even proceeded smoothly in isopropanol at room temperature.
N-杂环卡宾-钯( II )催化苄基铵盐与芳基硼酸的交叉偶联,通过C-N键活化合成二芳基甲烷衍生物。值得注意的是,在易于制备且工作稳定的 Pd-PEPPSI 预催化剂存在下,苄基铵盐的 Csp 3 -N 键活化甚至在异丙醇中在室温下顺利进行。
Synthesis of benzyl thioether derivatives via N-heterocyclic carbene palladium(II)-catalyzed cross coupling of benzylammonium salts with thiophenols
作者:Tao Wang、Jiarui Guo、Yongli Xu、Xiaobo Wang、Yan Wang、Dandan Feng、Lantao Liu
DOI:10.1016/j.jorganchem.2021.122176
日期:2022.1
A new route to benzyl thioether derivatives has been developed via the N-heterocyclic carbene palladium(II)-catalyzed cross coupling of benzylammonium salts with thiophenols. Under the optimal conditions, different benzylammonium salts could be well tolerated. Meanwhile, various kinds of aryl thiophenols and heteroaryl thiophenols could be used as efficient substrates, generating broad array of benzyl
通过 N-杂环卡宾钯 (II) 催化的苄基铵盐与苯硫酚的交叉偶联,开发了一种新的苄基硫醚衍生物途径。在最佳条件下,可以很好地耐受不同的苄基铵盐。同时,各种芳基苯硫酚和杂芳基苯硫酚可作为有效底物,在数小时内以良好到高产率生成广泛的苄基硫醚。
A novel benzyl cation-triggered site-selective sp2C—H phosphorylation and etherification was developed. This reaction was conducted under the transition metal-free conditions through cation migration via dearomatization. Under the reaction conditions, the derivatives of naphthalenes, benzofurans and benzo[b]thiophenes all can be transformed into the corresponding products in good to excellent yields