Ligand-free copper-catalyzed denitrogenative arylation of phosphorylamides with arylhydrazines
作者:Qiao Zhu、Shiying Che、Zhenghong Luo、Zijian Zhao
DOI:10.1080/00397911.2020.1725577
日期:2020.4.2
Abstract A straightforward arylation of phosphorylamides with arylhydrazines hydrochloride was herein demonstrated. The protocol proceeded in the presence of a catalytic loading of Cu(OAc)2 as the catalyst, DTBP as the external oxidant and Cs2CO3 as the base, but without any ligands. And a series of N-aryl phosphorylamides were successfully obtained in high efficiency (up to 93% yields) with good substituents
摘要 本文证明了磷酰胺与芳基肼盐酸盐的直接芳基化反应。该协议在 Cu(OAc)2 作为催化剂、DTBP 作为外部氧化剂和 Cs2CO3 作为碱的催化负载存在下进行,但没有任何配体。并且成功地获得了一系列N-芳基磷酰胺,其具有良好的取代基相容性(多达30个例子),具有高效率(高达93%的产率)。基于控制反应和文献探索的结果,提出了自由基机理的简便方法。图形概要