Vicinal benzoyloxy-trans-bicyclo [2.2.1] heptanic bromhydrins, otherwise difficult to obtain are formed from N-bromosuccinimide and norbornanes bearing a 2-aryl-1,3 dioxolane skeleton. The greater stability of the intermediate dioxolenium ion reduces the tendency towards both Wagner-Meerwein rearrangement and neighbouring group participation by chlorine, processes usually observed when a less stable
N-
溴丁二
酰亚胺和带有2-芳基-
1,3-二氧戊环骨架的降
冰片烷形成了否则难以获得的邻苯甲酰氧基-反式-
双环[2.2.1]庚烷溴代醇。中间体二氧杂
环丁烷离子的更高稳定性降低了瓦格纳-梅尔温重排和邻位
氯参与的趋势,这是在涉及到稳定性较差的中间体时通常观察到的过程。然而,甲氧基羰基邻基的参与和瓦格纳·梅尔温重排分别发生在甲氧基羰基
双环[2.2.1]庚烷和
硼烷化合物中。