作者:Karel Piron、Sara Kenis、Guido Verniest、Riccardo Surmont、Jan Willem Thuring、Peter ten Holte、Frederik Deroose、Norbert De Kimpe
DOI:10.1016/j.tet.2012.05.122
日期:2012.8
A synthetic route toward new 8,8-difluoro-1,6-naphthyridine-5,7-diones, which are of interest as new building blocks in pharmaceutical chemistry, is described. The key steps include a copper-mediated cross-coupling of ethyl bromodifluoroacetate and 2-bromo-3-cyanopyridine, followed by hydrolysis of the nitrile function and subsequent cyclization. (C) 2012 Elsevier Ltd. All rights reserved.