Diazopropane (2) undergoes [3 + 2]-cycloaddition with 1-phenyl-bis-s-triazole[4, 3-b:3′,4′-f]pyridazine (1), which is a derivative of a heteroaromatic 14Ï-electron system, to give a 1:1 mixture of 11,11-dimethyl-6-phenyl-(3a) and 11,11-dimethyl-3-phenyl-11 H-pyrazolo[3,4-d]-bis-s-triazolo[4, 3-b:3′,4′-f]pyridazine (3b). These compounds represent derivatives of a novel heterocyclic system. The structures of the products were determined by independent syntheses.
氮
丙烷 (2) 与 1-苯基-双-s-三嗪[4, 3-b:3′,4′-f]
吡嗪 (1) 发生 [3 + 2] 环加成反应,生成 11,11-二甲基-6-苯基-(3a) 和 11,11-二甲基-3-苯基-11 H-
吡唑[3,4-d]-双-s-三嗪[4, 3-b:3′,4′-f]
吡嗪 (3b) 的 1:1 混合物。这些化合物代表了一种新型杂环系统的衍
生物。产品的结构通过独立合成确定。