also gave a little norbornanone (presumably from the dioxetane) and 5 gave some endo-3,7,7-trimethylnorbornan-2-one as a secondary photo-product. It was found that the exo/endo attack ratios by singlet oxygen on 3 and 5 are 66 and 0.19. By exploiting the C (3) monodeuteriated derivatives, 4 and 6 showed ratios of 28 and 0.67.
对2-甲基
降冰片烯2-(3),2-亚甲基-降
冰片烷(4)及其7,7-二甲基衍
生物(5和6)进行了
染料敏化的光氧化。在所有情况下,都会形成烯丙基重排的氢过氧化物,不同的是4还产生了少量降
冰片烷酮(大概是由二氧杂
环丁烷)而5产生了一些内生的-3,7,7-三甲基降
冰片烷-2-酮作为二次光产物。发现单线态氧在3和5上的外/内攻击率分别为66和0.19。通过利用C(3)一元
氘代衍
生物4和6 显示比率为28和0.67。