<i>p</i>-(3,4-Diphenyl-1,3-cyclopentadien-1-yl)phenyltropylium Perchlorate. An Intermediate in the Synthesis of [5.6.7]Quinarene System
作者:Kazuko Takahashi、Shunsuke Takenaka、Yoriko Kikuchi、Kahei Takase、Tetsuo Nozoe
DOI:10.1246/bcsj.47.2272
日期:1974.9
Attempt was made to dehydrogenate p-(3,4-diphenyl-1,3-cyclopentadien-1-yl)phenyltropilidene, prepared by treating p-tropylphenyllithium or p-tropylphenylmagnesium bromide with 3,4-diphenylcyclopent-2-enone, to 3″, 4″-diphenyl-1- cycIoheptatrienylidene-4-cyclopentadienylidene-2,5-cyclohexadiene, 10,11-diphenyl [5.6.7]quinarene. The resulting blue pigment showed spectral properties in line with those of p-(3,4-diphenyl-1,3-cyclopentadien-1-yl)phenyltropylium ion, [5.6.7]quinarenium ion, carrying a delocalized positive charge (VII’) but not those of expected cross-conjugated hydrocarbon.
尝试将对-(3,4-二苯基-1,3-环戊二烯-1-基)苯基亚丙基苯与 3,4-二苯基环戊-2-烯酮脱氢,生成 3″,4″-二苯基-1-环庚三烯-4-环戊二烯亚基-2,5-环己二烯、10,11-二苯基 [5.6.7]quinarene 。由此产生的蓝色颜料显示出的光谱特性与携带分散正电荷(VII')的对-(3,4-二苯基-1,3-环戊二烯-1-基)苯基铵离子、[5.6.7]喹啉离子的光谱特性一致,但与预期的交叉共轭碳氢化合物的光谱特性不同。