In this work we describe the synthesis of some novel fused imidazo [2, 1-b] [1, 3] thiazole derivatives. The reaction of 1, 2-diaminoethane 1 with carbon disulphide in H2O/ETOH as solvent furnishes 4, 5-dihydro-1H-imidazol-2-thiol 2 under reflux condition. the reaction of 4,5-dihydro-1H-imidazol-2-thiol on treatment with ethylchloro acetate and aromatic aldehyde in presence of anhydrous sodium acetate and acetic acid as solvent to give (Z)-2-(arylidene)-5,6-dihydroimidazo [2,1-b] [1,3] thiazol-3(2H)-one 3a-j. Compounds 3a-j was condensed with hydroxylamine to give 3-(aryl)-2, 3, 6, 7-tetrahydroimidazo [2, 1-b] [1,3] thiazolo [5, 4-d] isoxazole 4a-j. The structures of the new compounds were established by elemental analyses, IR,1H NMR and13C NMR data.
在这项工作中,我们描述了一些新型融合的咪唑[2,1-b][1,3]噻唑衍生物的合成。1,2-二氨基乙烷1与二硫化碳在H2O/ETOH溶剂中反应,在回流条件下生成4,5-二氢-1H-咪唑-2-硫醇2。将4,5-二氢-1H-咪唑-2-硫醇与乙酰氯乙酸酯和芳香醛在无水醋酸钠和醋酸作为溶剂的存在下反应,得到(Z)-2-(芳基亚甲基)-5,6-二氢咪唑[2,1-b][1,3]噻唑-3(2H)-酮3a-j。化合物3a-j与羟肟酸缩合,得到3-(芳基)-2,3,6,7-四氢咪唑[2,1-b][1,3]噻唑并[5,4-d]异噁唑酮4a-j。新化合物的结构由元素分析、红外、1H NMR和13C NMR数据确定。