Nickel-catalyzed cross-coupling of carboxylic anhydrides with arylboronic acids
作者:Qiang Chen、Xin-Heng Fan、Li-Peng Zhang、Lian-Ming Yang
DOI:10.1039/c4ra11520a
日期:——
A nickel-based catalyst was employed in the cross-coupling of carboxylic anhydrides with arylboronicacids, and the reaction was carried out under mild conditions. This new protocol provides an efficient, cheap and convenient alternative to synthesizing aromatic ketones.
(EN) This application relates to the use as thrombin inhibitors, coagulation inhibitors and thromboembolic disorder agents of diamines of formula (I) as defined herein. It also provides novel compounds of formula (I), processes and intermediates for their preparation, and pharmaceutical formulations comprising the novel compounds of formula (I).(FR) La présente invention concerne l'utilisation, comme inhibiteurs de thrombine, inhibiteurs de coagulation et agents destinés aux désordres de la thromboembolie, de diamines de formule I telle qu'elle est définie dans la description. L'invention concerne aussi des composés nouveaux de formule I, des procédés et des produits intermédiaires pour leur préparation, et des formulations pharmaceutiques comprenant les composés nouveaux de formule I.
Carbonylative Cross-Electrophile Coupling between Aryl Bromides and Aryl Triflates Enabled by Palladium and Rhodium Cooperative Catalysis and CO as Reductant
作者:Gang Chen、Ruoxin Zhou、Xuemei Zhang、Xue Xiao、Søren Kramer、Gui-Juan Cheng、Zhong Lian
DOI:10.1021/acscatal.2c04211
日期:2022.12.2
the most useful functional groups in organic synthesis. Here, we report a carbonylative cross-electrophile coupling reaction that utilizes carbonmonoxide gas as both carbonyl source and reductant. The use of Pd/Rh cooperative catalysis enables the carbonylative coupling of easily accessible aryl triflates and aryl bromides. Unlike previous carbonylative cross-electrophile coupling reactions, the method
酮是有机合成中最有用的官能团之一。在这里,我们报告了一种羰基化交叉亲电偶联反应,该反应利用一氧化碳气体作为羰基源和还原剂。Pd/Rh 协同催化的使用使易于获得的芳基三氟甲磺酸酯和芳基溴化物发生羰基偶联。与以前的羰基化交叉亲电偶联反应不同,该方法不需要添加化学计量的金属还原剂。值得注意的是,密度泛函理论 (DFT) 计算和同位素标记表明 CO 作为还原剂。