Acetylene-free synthesis of vinyloxy pyridine and quinoline
作者:Abdelrahman Hamdi、Amany S. Mostafa、Cedric Nana Watat、Mathieu Y. Laurent、Kawther Ben Ayed、Khalid B. Selim、Gilles Dujardin
DOI:10.1016/j.tetlet.2016.11.061
日期:2016.12
Copper-catalyzed vinylation of 2- and 4-hydroxy pyridine and quinoline affords exclusively N-vinylation products. However, vinyl ethers of 4-hydroxy pyridine and quinoline can be prepared via a three-step sequence involving copper-catalyzedC-O cross coupling reaction of the corresponding N-heteroaryl bromides with ethylene glycol, chlorination of the terminal alcohol, and dehydrohalogenation of the