Lewis Acid-Catalyzed Ring-Opening Functionalizations of 1,4-Epoxy-1,4-dihydronaphthalenes
作者:Yoshinari Sawama、Yuta Ogata、Koichi Kawamoto、Hiroyuki Satake、Kyoshiro Shibata、Yasunari Monguchi、Hironao Sajiki、Yasuyuki Kita
DOI:10.1002/adsc.201200771
日期:2013.2.1
1-naphthol derivatives via unstable cation intermediates formed by the acid-catalyzed ring-opening reaction of the 1,4-epoxy moiety of 1,4-epoxy-1,4-dihydronaphthalenes, their nucleophilic functionalization using the cation intermediates as an active species is extremely difficult. We have accomplished the Lewis acid-catalyzed carbon-carbon and carbon-nitrogen bond formations associated with the ring-opening
由于1,4-环氧-1,4-二氢萘可通过以下途径顺利转化为1-萘酚衍生物由1,4-环氧-1,4-二氢萘的1,4-环氧部分的酸催化的开环反应形成的不稳定的阳离子中间体,使用阳离子中间体作为活性物质对其进行亲核官能化是非常困难的。我们已经使用亲核试剂如烯丙基三甲基硅烷,三甲基甲硅烷基氰化物和三甲基甲硅烷基叠氮化物完成了路易斯酸催化的与1,4-环氧-1,4-二氢萘的开环有关的碳-碳和碳-氮键形成。阳离子中间体的稳定作用是基于将适当的取代基引入1,4-环氧-1,4-二氢萘的桥头位置,从而得到相应的独特且多功能的萘衍生物。