Novel 1,4,5,8-Phenanthrenediquinones and Unusual Deoxygenation with Trimethylsilyl Iodide
作者:Karsten Krohn、Abdulselam Aslan、Ishtiaq Ahmed、Gennaro Pescitelli、Tiziana Funaioli
DOI:10.1002/ejoc.200900666
日期:2009.11
of 5,8-dimethoxy-1,4-phenanthrenequinone (4) with boron trichloride or tribromide resulted in the halogenation of the quinone double bond to form 5a,b. Surprisingly, reaction of dimethyl ether 4 with trimethylsilyl iodide afforded the phenanthrenediquinone 6, whereas deoxygenation to 8 and 9 occurred by reaction of trimethylsilyl iodide with derivative 7. The phenanthrenediquinones 6 and 10 were obtained
尝试用三氯化硼或三溴化硼对 5,8-二甲氧基-1,4-菲醌 (4) 进行芳基甲基醚裂解,导致醌双键卤化形成 5a,b。令人惊讶的是,二甲醚 4 与三甲基甲硅烷基碘反应得到菲二醌 6,而 8 和 9 脱氧是通过三甲基甲硅烷基碘与衍生物 7 的反应发生的。 菲二醌 6 和 10 通过使用高铈铵从 4 和 7 硝酸盐中几乎定量地获得氧化剂。通过 Huckel 分子轨道计算研究并合理化了菲二醌 6 和 10 的循环伏安图。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)