Aza-Annulation of Enynyl Azides: A New Approach to Substituted Pyridines
作者:Chada Raji Reddy、Sujatarani A. Panda、Motatipally Damoder Reddy
DOI:10.1021/ol503752k
日期:2015.2.20
Synthesis of substitutedpyridines through a novel aza-annulation of 2-en-4-ynyl azides, derived from MBH-acetates of acetylenic aldehydes, is described. A variety of enynyl azides having aryl, heteroaryl, and alkyl groups on the alkyne functionality successfully participated in the Ag-mediated annulation reaction to provide the corresponding 3,6-disubstituted pyridines. I2-Mediated cyclization was