Microwave-assisted Hantzsch thiazole synthesis of N-phenyl-4-(6-phenylimidazo[2,1-b]thiazol-5-yl)thiazol-2-amines from the reaction of 2-chloro-1-(6-phenylimidazo[2,1-b]thiazol-5-yl)ethanones and thioureas
作者:Sukanta Kamila、Kimberly Mendoza、Edward R. Biehl
DOI:10.1016/j.tetlet.2012.06.116
日期:2012.9
N-Phenyl-4-(6-phenylimidazo[2,1-b]thiazol-5-yl)thiazol-2-amines (6a-q) have been synthesized by the Hantzsch thiazole reaction of 2-chloro-1-(6-phenylimidazo[2,1-b]thiazol-5-yl)ethanones (4a-e) with suitably substituted thioureas using microwave heating. The ethanones (4a-e) were prepared by the reaction of 6-phenylimidazo[2,1-b]thiazoles (3a-e) with chloroacetylchloride in refluxing 1,4-dioxane whereas
N-Phenyl-4-(6-phenylimidazo[2,1-b]thiazol-5-yl)thiazol-2-amines (6a-q) 已通过 2-chloro-1-(6 -苯基咪唑并[2,1-b]噻唑-5-基)乙酮(4a-e)与适当取代的硫脲使用微波加热。乙酮 (4a-e) 是通过 6-苯基咪唑并 [2,1-b] 噻唑 (3a-e) 与氯乙酰氯在回流的 1,4-二恶烷中反应制备的,而噻唑 (3a-e) 是通过以下方法合成的2-溴-1-苯基乙酮(2a-e)与噻唑-2-胺在回流的丙酮中反应。