Preparation of Indoles from α-Aminonitriles: A Short Synthesis of FGIN-1-27
作者:Till Opatz、Dorota Ferenc
DOI:10.1021/ol061617+
日期:2006.9.1
Alpha-Aminonitriles derived from 2-aminocinnamic acid esters and amides can be cyclized under basic conditions to furnish substituted indole-3-acetic acid derivatives in quantitative yield. The reaction provides a simple access to a class of biologically active compounds.
N-Heterocyclic-Carbene-Catalyzed Umpolung of Imines
作者:Atanu Patra、Subrata Mukherjee、Tamal Kanti Das、Shailja Jain、Rajesh G. Gonnade、Akkattu T. Biju
DOI:10.1002/anie.201611268
日期:2017.3.1
N‐Heterocycliccarbene (NHC) catalysis has been widely used for the umpolung of aldehydes, and recently for the umpolung of Michael acceptors. Described herein is the umpolung of aldimines catalyzed by NHCs, and the reaction likely proceeds via aza‐Breslow intermediates. The NHC‐catalyzed intramolecular cyclization of aldimines bearing a Michael acceptor resulted in the formation of biologically important