A Simple and Efficient Synthesis of New Dihydrospiro[(1<i>H</i>)Quinoline‐2,1′‐Cyclohexane] Derivatives Via Internal Friedel‐Crafts Alkene Alkylation of N‐(1‐Allylcyclohexanyl)Ethylphenylamine
作者:Vladímir V. Kouznetsov、Luz Dary Avellaneda Duarte、Elena E. Stashenko
DOI:10.1081/scc-200049815
日期:2005.3
Abstract New substituted dihydrospiro[(1H)quinoline‐2,1′‐cyclohexanes] were prepared by the internal alkene alkylation of N‐(1‐allylcyclohexanyl) ethylphenylamine obtained from the corresponding ketimine and allylmagnesium bromide. The 1‐allyl‐6‐ethyl‐4‐methyl‐3,4‐dihydrospiro[(1H)quinoline‐2,1′‐cyclohexane] undergoes an amino‐Claisen transposition (BF3 · Et2O) to afford the 8‐allyl‐6‐ethyl‐4‐methyl
摘要 通过从相应的酮亚胺和烯丙基溴化镁获得的 N-(1-烯丙基环己基)乙基苯胺的内部烯烃烷基化制备了新型取代的二氢螺[(1H)喹啉-2,1'-环己烷]。1-烯丙基-6-乙基-4-甲基-3,4-二氢螺[(1H)喹啉-2,1'-环己烷]经过氨基-克莱森转位(BF3·Et2O)得到8-烯丙基-6 -乙基-4-甲基取代的螺喹啉或由布朗斯台德酸(H2SO4)促进的第二次内部烷基化反应,得到一种新的非天然lilolidespiroderivative。