promote the FeCl2-catalyzed N-amidation reaction of arylamines with dioxazolones leading to hydrazides in high efficiency and chemoselectivity. The new ligand-promoted N-amidation protocols offer a convenient way to access various challenging triazane compounds via double or sequential N-amidation of primary arylamines.
大体积烷基膦 (P t Bu 3 ) 可以将角色从参与者配体转换为旁观者配体,以促进 FeCl 2催化的芳胺与二恶唑酮的N酰胺化反应,从而高效且具有化学选择性地生成酰肼。新的配体促进的N -酰胺化方案提供了一种通过伯芳胺的双重或连续N -酰胺化来获得各种具有挑战性的三氮烷化合物的便捷方法。