Medium and Large <i>N</i>-Heterocycle Formation via Allene Hydroamination with a Bimetallic Rh(II) Catalyst
作者:Kelton G. Forson、Benjamin O. Bohman、Coriantumr Z. Wayment、Rachel N. Owens、Caitlyn E. McKnight、Rhen C. Davis、Lillian R. Stillwell、Stacey J. Smith、David J. Michaelis
DOI:10.1021/jacs.1c10534
日期:2022.1.12
We report the synthesis of a 2-phosphinoimidazole-derived bimetallic Rh(II) complex that enables intramolecular allene hydroamination to form 7- to 10-member rings in high yield. Monometallic Rh complexes, in contrast, fail to achieve any product formation. We demonstrate a broad substrate scope for formation of various N-heterocycles. Macrocyclizations that form 11- to 15-member N-heterocycles are