Facile synthesis of new 10-substituted-5H-naphtho[1,2-e][1,2,4]triazolo[3,4-b][1,3,4]thiadiazin-5-ones
作者:Jabbar Khalafy、Mahsa Mohammadlou、Miri Mahmoody、Fatemeh Salami、Ahmad Poursattar Marjani
DOI:10.1016/j.tetlet.2015.02.002
日期:2015.3
50 °C gave the corresponding 2-[(4-amino-5-aryl-4H-1,2,4-triazol-3-yl)thio]naphthalene-1,4-diones. Their treatment with EtOH/HCl under reflux conditions produced 10-substituted-5H-naphtho[1,2-e][1,2,4]triazolo[3,4-b][1,3,4]thiadiazin-5-ones through intramolecular cyclization.
2-溴-1,4-萘醌与4-氨基-5-芳基-4 H -1,2,4-三唑-3-硫醇在乙醇中于50°C反应,得到相应的2-[((4-氨基-5-芳基-4 H -1,2,4-三唑-3-基)硫]萘-1,4-二酮。在回流条件下用EtOH / HCl处理可产生10-取代的5 H-萘[1,2- e ] [1,2,4]三唑[3,4- b ] [1,3,4]噻二嗪-5 -通过分子内环化的一个。