Sequential Metal-CatalyzedN-Heteroarylation and C–C Cross-Coupling Reactions: An Expedient Route to Tris(hetero)aryl Systems
作者:Jamie S. Siddle、Andrei S. Batsanov、Martin R. Bryce
DOI:10.1002/ejoc.200800018
日期:2008.6
1-methylbenzimidazolone, imidazole and pyrrole. The products of these reactions then undergo palladium-catalyzed C–C cross-couplings with aryl or heteroarylboronic acids under Suzuki–Miyaura conditions to provide a rapid entry, from readily-available reagents, into tris(hetero)aryl scaffolds comprising two or three N-heterocyclic rings. The sequential N–C and C–C couplings can be performed in a one-pot process (two
本文描述了铜催化的苯并咪唑、1-甲基苯并咪唑酮、咪唑和吡咯的 N-C 杂芳基化反应。然后,这些反应的产物在 Suzuki-Miyaura 条件下与芳基或杂芳基硼酸进行钯催化的 C-C 交叉偶联,以提供从容易获得的试剂快速进入包含两个或三个 N 的三(杂)芳基支架-杂环。连续的 N-C 和 C-C 偶联可以在一锅法中进行(给出了两个例子:>50% 的总产率)。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)