Using Ag2CO3 as an additive, we developed the Pd-catalyzed intermolecular C-H/C-H cross-coupling of pyridine N-oxides with five-membered heterocycles such as 1-benzyl-1,2,3-triazoles, thiophens and furans. This protocol provides an efficient and regioselective approach for the synthesis of unsymmetrical biheteroaryl molecules.
我们使用Ag2CO3作为添加剂,开发了Pd催化的
吡啶N-氧化物与五元杂环(例如1-苄基
1,2,3-三唑,
噻吩和
呋喃)的分子间CH / CH交叉偶联。该协议为不对称的双杂芳基分子的合成提供了一种有效的区域选择性方法。