The synthesis of highly functionalised N-heterocycles has been achieved by the visible light mediated photoredox conversion of tertiary amines to azomethine ylides and their further reaction with maleimide derivatives as dipolarophiles.
General Ir-Catalyzed N–H Insertions of Diazomalonates into Aliphatic and Aromatic Amines
作者:Zhuang Zhong、Céline Besnard、Jérôme Lacour
DOI:10.1021/acs.orglett.3c03929
日期:2024.2.9
reactivity of acceptor–acceptor diazo malonate reagents is reported using [Ir(cod)Cl]2 as catalyst. A large range of amines, primary and secondary, aliphatic and aromatic, is possible. Mild temperatures, perfect substrate/reactant stoichiometry, and good functional group compatibility render the process particularly attractive for the (late-stage) functionalization of amines.