Bromination and Iodination of 6H,12H-5,11-Methanodibenzo[b,f][1,5]diazocine: A Convenient Entry to Unsymmetrical Analogs of Tröger's Base
作者:Delphine Didier、Sergey Sergeyev
DOI:10.1002/ejoc.200700253
日期:2007.8
11-Methanodibenzo[b,f][1,5]diazocine can easily be prepared from aniline and paraformaldehyde. Its reactions with either N-bromosuccinimide (NBS) or with iodine monochloride (ICl) in the presence of a suitable activator smoothly afford 2-bromo- and 2-iodo- derivatives, respectively. The combination of these halogenation methods provides access to the 8-bromo-2-iodo derivative, which is an interesting and otherwise
6H,12H-5,11-Methanodibenzo[b,f][1,5]diazocine 可以很容易地从苯胺和多聚甲醛制备。在合适的活化剂存在下,它与 N-溴代琥珀酰亚胺 (NBS) 或与一氯化碘 (ICl) 的反应分别顺利地得到 2-溴-和 2-碘-衍生物。这些卤化方法的组合提供了获得 8-bromo-2-iodo 衍生物的途径,这是一种有趣的中间体,用于合成 Troger 碱的不对称类似物。报道的卤化代表了 6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine 亲电取代的第一个例子。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)