On the reaction of (vinylimino)phosphoranes and related compounds. Novel synthesis and properties of [n](2,4)pyridinophanes and [n](2,4)quinolinophanes (n = 9–7)
作者:Hideo Miyabara、Tohru Takayasu、Makoto Nitta
DOI:10.1039/a904790e
日期:——
Pd/C). Cyclohexenone-annulated [n](2,4)pyridinophanes 13a–c, which have a quinoline skeleton, were converted conveniently to a series of [n](2,4)quinolinophanes 26a–c (n = 9–7), including the known [8](2,4)quinolinophane 26b. 1H NMR spectroscopy at various temperatures clarified the dynamic behavior of the heptamethylene chain of [7](2,4)pyridinophanes 13c, 14c, and [7](2,4)quinolinophane 26c. The energy
[ n ](2,4)pyridinophanes 13a–c(n = 9–7)和14a–c(n = 9–7)以及15a(n = 9)和16a(n = 9)由3-氨基环己-2-烯酮和几种β-氨基烯酮与环烷-2-烯酮在烯胺-烷基化过程中的反应,随后的氨基与羰基官能团的缩合以及产物的脱氢组成在脱氢剂(10%Pd / C)存在下。具有喹啉骨架的环己烯酮环化的[ n ](2,4)吡啶并吡啶13a–c可方便地转化为一系列[ n ](2,4)喹啉并烷26a–c(n = 9–7),包括已知的[8](2,4)喹啉oph烷26b。在各种温度下的1 H NMR光谱证实了[7](2,4)吡啶并[13],14c和[7](2,4)喹啉基环烷26c的七亚甲基链的动力学行为。桥翻转的能垒( ΔG ‡ c)对于13c为11.3 kcal mol –1( T c –10°C),对于14c为11.7 kcal mol