etherification. Various bis-1,2,3-triazoles containing a benzotriazole skeleton were obtained via sequential azide–alkyne and azide–aryne cycloadditions. Intramolecular azido–aryne cycloaddition, conducted using the same starting materials, afforded new types of ring-fused benzotriazoles. In the latter case, the reaction proceeded efficiently even though the regioorientation of the azido group was the reverse
从各种 3-(
叠氮烷氧基)
芳烃前体合成了多种苯并三唑,这些前体很容易通过光信醚化制备。通过连续的
叠氮化物-
炔烃和
叠氮化物-
芳烃环加成反应获得了各种含有苯并三唑骨架的双-
1,2,3-三唑。使用相同的起始材料进行分子内
叠氮-
芳烃环加成,得到了新型的稠环苯并三唑。在后一种情况下,即使
叠氮基的区域取向与通常在 3-烷氧基
芳烃和
叠氮化物之间的分子间反应中观察到的方向相反,反应也能有效进行。