pyridine compounds from a common starting material. The C-4/C-2 approach uses palladium-mediated coupling reactions to sequentially functionalize C-4 and then C-2. An alternative C-2/C-4 route uses a regioselective SNAr reaction to first substitute at C-2 then subsequently at C-4 by a palladium-mediated reaction. Both approaches have been used successfully to provide a range of 2,4-bis-aminoaryl pyridine
摘要 我们同时开发了两种不同的方法,以从常见的起始材料中快速获取
2,4-双
氨基芳基
吡啶化合物。C-4/C-2 方法使用
钯介导的偶联反应依次功能化 C-4,然后是 C-2。另一种 C-2/C-4 路线使用区域选择性 SNAr 反应,首先在 C-2 处取代,然后在 C-4 处通过
钯介导的反应进行取代。两种方法均已成功用于提供一系列
2,4-双-
氨基芳基
吡啶化合物。图形概要