The endo- and exo-alcohols 5–12 of syn-(1) and anti-tricyclo[4.2.1. 12.5]decane (2) were treated with BF3/Et3SiH (ionic hydrogenation) in order to study the behaviour of the corresponding regioselectively generated carbocations at C(3) (a (syn), b (anti)) and C(9) (c (syn), d (anti)). The anti-hydrocarbon 2 is practically the sole product obtained starting with the four 3-alcohols (viaab from 5 and
的内切-和外切-醇5-12的顺式- (1)和抗-
三环[4.2.1。为了研究相应的区域选择性生成的
碳正离子在C(3)(a(顺式),b(抗))和C上的行为,用BF 3 / Et 3 SiH(离子加
氢)处理了1 2.5个
癸烷(2)。(9)(c(syn),d(反))。该抗-烃2实际上唯一的产物获得的起始的四个3-醇(通过一个b从5和6(顺式)和经由b从9和10(反))。在每种情况下四个-9-醇得到的混合物的2-内型,3-内型( - 3)和2-外,3-外三亚
甲基-8,9,10-trinorbornane(4)(通过ç Ë从7和8(syn)并通过d f(11)和(12)(反)),但不涉及烃2,即不涉及1,3-H转变c a和d b。