A simple and convenient synthesis of substituted furans and pyrroles by CuCl2-catalyzed heterocyclodehydration of 3-yne-1,2-diols and N-Boc- or N-tosyl-1-amino-3-yn-2-ols
作者:Bartolo Gabriele、Pierluigi Plastina、Mabel V. Vetere、Lucia Veltri、Raffaella Mancuso、Giuseppe Salerno
DOI:10.1016/j.tetlet.2010.05.001
日期:2010.7
A simple and economical synthesis of substituted furans and pyrroles, by ligand-free CuCl2-catalyzed heterocyclodehydration of readily available 3-yne-1,2-diols and N-Boc- or N-tosyl-1-amino-3-yn-2-ols, respectively, is presented. Reactions are carried out in MeOH at 80–100 °C for 1–24 h and afford the corresponding heterocyclic derivatives in 53–99% isolated yields.
一种简单经济的取代呋喃和吡咯的合成方法,该方法通过无配体的CuCl 2催化的易获得的3-炔-1,2-二醇和N - Boc-或N-甲苯磺酰基-1-氨基-3-yn-的杂环脱水分别给出了2-ols。反应在MeOH中于80-100°C下进行1-24h,并以53-99%的分离产率得到相应的杂环衍生物。