of the unsaturated decanols (7), (9) and (16) with iodosylbenzene diacetate-iodine leads to the formation of intermediate allyloxy radicals viz (1) which undergo fragmentation followed by transannular cyclisation of the resulting carbon centered radicals (2) leading to the bicyclo [5.3.0]decanones [(3), “hydroazulenones”] (Scheme 1). When the iodomethylhydroazulenones (3) (R′=I) are treated with Bu3SnH-AIBN
用
碘代乙苯二
乙酸-
碘处理不饱和
癸醇(7),(9)和(16)导致形成中间烯丙氧基自由基即(1),该烯丙基氧基经历裂解反应,然后经环状环状环化所得的以碳为中心的自由基(2),导致到双环[5.3.0]
癸酮[(3),“氢化azulenones”](方案1)。当在高稀释度下用Bu 3 SnH-AIBN处理
碘甲基氢azulenones (3)(R'= I)时,它们会扩环成异构的双环[6.3.0]
十一烷酮(4)。