1-(5-(<i>R</i>-Amino)-1,2,4-thiadiazol-3-yl)propan-2-ones: Convenient Ketomethylenic Reagents for the Gewald and Dimroth Reactions
作者:Nazariy T. Pokhodylo、Olga Ya. Shyyka
DOI:10.1002/jhet.1719
日期:2014.9
1‐(5‐(R‐Amino)‐1,2,4‐thiadiazol‐3‐yl)propan‐2‐ones were used as activated ketomethylenic compounds for the Gewald and Dimroth reactions. It was found out that they exhibited high reactivity in such anion reactions for the construction of the 1,2,3‐triazole and thiophene frameworks. The target 1,2,3‐triazoles and thiophenes were obtained in high yields in minimum time.
1-(5-(R-氨基)-1,2,4-噻二唑-3-基)丙-2-酮被用作Gewald和Dimroth反应的活化酮亚甲基化合物。结果发现,它们在构建1,2,3-三唑和噻吩骨架的阴离子反应中显示出很高的反应性。在最短时间内以高收率获得了目标1,2,3-三唑和噻吩。