Kai-Li Zhang, Wen-Hao Yu, Ke-Qing Zhao, Ping Hu, Bi-Qin Wang, Bertrand Donnio
Two isomeric series of compounds with "inverted" chains' substitution patterns, 7,10-dialkoxy-1,2,3,4-tetrafluoro-6,11-dimethoxytriphenylene and 6,11-dialkoxy-1,2,3,4-tetrafluoro-7,10-dimethoxytriphenylene, labelled respectively p-TPFn and m-TPFn, and two non-fluorinated homologous isomers, 3,6-dibutoxy-2,7-dimethoxytriphenylene and 2,7-dibutoxy-3,6-dimethoxytriphenylene, p-TP4 and m-TP4, respectively, were synthesized in three steps and obtained in good yields by the efficient transition-metal-free, fluoroarene nucleophilic substitution via the reaction of appropriate 2,2'-dilithium biphenylenes with either perfluorobenzene, C6F6, to yield p-TPFn and m-TPFn, or o-difluorobenzene, C6H4F2, for p-TP4 and m-TP4, respectively...
January 12, 2024: Chemistry, An Asian Journal