Palladium(II)-Catalyzed Oxidative C−H/C−H Cross-Coupling of Heteroarenes
作者:Peihua Xi、Fan Yang、Song Qin、Dongbing Zhao、Jingbo Lan、Ge Gao、Changwei Hu、Jingsong You
DOI:10.1021/ja909807f
日期:2010.2.17
of unsymmetrical biheteroaryl molecules has been developed via Pd(II)-catalyzed oxidative C-H/C-H cross-coupling of heteroarenes. An inversion in reactivity and selectivity has been achieved successfully to perform the desired heterocoupling. This process allows the heterocoupling of not only electron-rich N-containing heteroarenes (e.g., xanthines, azoles, and indolizines) but also electron-poor pyridine
已经通过 Pd(II) 催化的杂芳烃氧化 CH/CH 交叉偶联开发了一种合成不对称二杂芳基分子的有效方法。已成功实现反应性和选择性的反转以进行所需的异源偶联。该过程不仅允许富电子的含氮杂芳烃(例如黄嘌呤、唑类和吲哚嗪)杂偶联,而且允许贫电子的吡啶 N 氧化物与各种噻吩或呋喃杂偶联。
Oxygen as an oxidant in palladium/copper-cocatalyzed oxidative C-H/C-H cross-coupling between two heteroarenes
作者:Yang Shi、Zhen Wang、Yangyang Cheng、Jingbo Lan、Zhijie She、Jingsong You
DOI:10.1007/s11426-015-5386-x
日期:2015.8
The palladium/copper-cocatalyzed oxidative C-H/C-H cross-coupling between two heteroarenes by using molecular oxygen as an oxidant instead of metal oxidants has been developed for the first time to construct biheteroaryl motifs. A relatively broad range of thiophenes, furans and indoles can smoothly couple with various N-heteroarenes in satisfactory yields. This catalytic system with O2 as the terminal oxidant offers clear advantages of economically feasible and eco-friendly processes.
An efficient labeling strategy of drug like molecules with functionalized alkyl linkers using CH-activation
作者:Jana Rentner、Rolf Breinbauer
DOI:10.1039/c2cc35758e
日期:——
Heterocyclic drugs can be cross-coupled with functionalized thiophene derivatives under dehydrogenative conditions using Pd-catalysts. Upon reductive desulfurization an alkyl linker is introduced with a functional group at its terminus, which will allow the immobilization of the drug molecule onto a solid support for chemical proteomics.