The combination of arynes, generated using fluoride from the corresponding 2-(trimethylsilyl)aryl triflates, and 3-hydroxy-4-aminothiadiazoles leads to the selective formation of 3-amino-substituted benzo[d]isothiazoles. Variation of the substitution pattern of the aryne precursor, and of the thiadiazole, is possible, with the target heterocycles being obtained in good to excellent yields. In all cases
使用由相应的2-(三甲基甲
硅烷基)芳基
三氟甲磺酸酯
氟化物生成的
芳烃与3-羟基-4-
氨基
噻二唑的组合导致选择性地形成3-
氨基取代的苯并[ d ]
异噻唑。可以改变
芳烃前体和
噻二唑的取代方式,并以高至优异的产率获得目标杂环。在所有情况下,使用3-羟基-4-
氨基
噻二唑都会在产物杂环中引入
氨基取代基。