A convenient route to functionalized 3-amino-N-methylfuro[3,2-b]pyridine-2-carboxamides
作者:Anne Bretéché、Pascal Marchand、Marie-Renée Nourrisson、Patrick Hautefaye、Guillaume De Nanteuil、Muriel Duflos
DOI:10.1016/j.tet.2011.05.035
日期:2011.7
The synthesis of novel functionalized 3-amino-N-methylfuro[3,2-b]pyridine-2-carboxamides is described from cyanopyridine intermediates. Based on the difference in halogen reactivity, ethyl [(5-bromo-2-chloropyridin-3-yl)oxy]acetate was functionalized by a palladium-catalyzed reaction, before the cyclization to the desired furo[3,2-b]pyridines.
从氰基吡啶中间体描述了新型功能化的3-氨基-N-甲基呋喃并[3,2 - b ]吡啶-2-羧酰胺的合成。基于卤素反应性的差异,在环化成所需的呋喃并[3,2- b ]吡啶之前,通过钯催化的反应对[(5-溴-2-氯吡啶基-3-基)氧基]乙酸乙酯进行官能化。。