A synthetic route to a dithia [3.3] metacyclophane with a benzylic functional ( methoxymethyl ) group at C9 is described. The benzylic function however had to be introduced at a later stage in the synthetic scheme to optimize the overall yield. Only the anti isomer of the desired dithiacyclophane (7) was isolated. The entire methoxymethyl group lies within the shielding zone of the opposite benzene ring as indicated in the 1H n.m.r. spectrum. Attempts to convert anti-(7) into the novel aromatic system (5b) by a rearrangement-elimination sequence however failed.
本文介绍了一种在 C9 位带有苄基官能团(甲氧基甲基)的二硫[3.3]偏环烷的合成路线。不过,苄基官能团必须在合成方案的后期引入,以优化总产率。只分离出了所需的二硫代环烷(7)的反异构体。如 1H n.m.r. 光谱所示,整个甲氧基甲基位于对侧苯环的屏蔽区内。然而,通过重排-消除顺序将反(7)转化为新型芳香系统(5b)的尝试失败了。