The reaction of bromine with 1,2,5,6-dibenzocyclo-octatetraene involves normal halogen addition to the olefinic linkages, rather than transannular addition as previously assumed. Both a very unreactive tetrabromide and a highly reactive dibromide can be obtained. Solvolysis of the dibromide gives derivatives of 1,2,5,6-dibenzocycloheptatriene. The structures of several transformation products of this
溴与1,2,5,6-二苯并环
辛酸酯的反应涉及将正常的卤素加成至烯烃键,而不是先前假定的跨环加成。可以同时获得非常不活泼的四
溴化物和高度反应性的二
溴化物。二
溴化物的溶剂分解得到1,2,5,6-二苯并
环庚三烯的衍
生物。修改了文献中出现的该二
溴化物的几种转化产物的结构。二苯并环
辛酸酯的四
溴化物的通常几何形状与观察到的NMR光谱相关。