Syntheses and Some Properties of 9,2′:7′,9″-, 9,2′:9′,9″-, and 9,4′:9′,9″-Terfluorene
作者:Masahiro Minabe、Masaaki Yoshida、Kazuo Suzuki
DOI:10.1246/bcsj.51.3373
日期:1978.11
9'″-quaterfluorene were synthesized. The 1H-NMR spectrum of 9′- and 9″-methine protons of 9,4′:9′,9″-terfluorene shows an AB spin pattern at room temperature, and that of 9,2′:9′,9″-terfluorene has an A2 pattern. The π-π* red shift of the UV spectra of some fulvalenes are in the order of 9,9′-bifluorenylidene, 4-(9-fluorenyl)-, and 4,4′-di(9-fluorenyl)-9,9′-bifluorenylidene. A homoconjugation effect
合成了三种三芴和9,4':9',9":4",9'"-四芴。9,4':9',9"-三芴的 9'-和 9"-次甲基质子的 1H-NMR 谱在室温下显示出 AB 自旋模式,而 9,2':9',9" -三芴具有A2图案。一些富瓦烯的紫外光谱的 π-π* 红移顺序为 9,9'-二芴基、4-(9-芴基)-和 4,4'-二(9-芴基)-9, 9'-二芴基。在醇系列中也观察到同共轭效应:9-芴醇、4,9'-bifluoren-9-ol 和 9,4':9',9″-terfluoren-9'-ol。