From the deuterium-labeling studies, it is concluded that, in the case of the tricyclooctane, the central bicyclobutane bonds cleave in the primary step to give radical cationic or zwitterionic species that undergo a Wagner-Meerwein rearrangement. Also, in the case of tricycloheptane, this is the dominating pathway but lateral C-C bond cleavage with subsequent carbene and product formation takes place
从
氘标记研究得出的结论是,在三
环辛烷的情况下,中心双
环丁烷键在初级步骤中裂解,产生自由基阳离子或两性离子物质,这些物质经历 Wagner-Meerwein 重排。此外,在三
环庚烷的情况下,这是主要途径,但横向 CC 键断裂以及随后的卡宾和产物形成发生在大约 10 倍的范围内。15%。对于三
环己烷,该途径成为主要途径。我们的光机械观察与早期关于双
环丁烷 HOMO 的相对能量排序的理论研究非常一致,因为产品组成反映了这一点