Fe(III)-Catalyzed Aerobic Intramolecular N–N Coupling of Aliphatic Azides with Amines
作者:Yue Zhang、Dongyu Duan、Ying Zhong、Xin-Ai Guo、Jiawei Guo、Jing Gou、Ziwei Gao、Binxun Yu
DOI:10.1021/acs.orglett.9b01396
日期:2019.7.5
An Fe(III)-catalyzed intramolecular N-N coupling of aliphatic azidoamines that forms diverse five-and six-membered semisaturated diazoheterocycles using air as an oxidant is reported, providing an alternative to hydrazine-based methods. Mechanistic studies suggest that a N-radical induced intramolecular homolytic substitution (S(H)2) is involved in ring closure. The power of this N-N bond-forming method is also demonstrated by using it as the final step in a total synthesis of (-)-newbouldine.