8 Phenyl- (2) and 8,8 diphenyl-heptafulvenes (3) have been synthesized and fully characterized. The 220 MHz NMR data on 2 and 3, as well as the 13C NMR data on 3, indicates only a small contribution of the dipolar structure for this system. The electrophilic and nucleophilic reagents react at different sites of this system while protonation of 2 and 3 occurs at the exocyclic methylene carbon butylation
已经合成并完全表征了8个苯基- (2)和8,8个二苯基-七富烯(3)。在220
MHz的NMR数据2和3,以及在13C上NMR数据3,表示偶极结构的这个系统只是一个小的贡献。的电和亲核试剂在该系统中的不同位点反应而质子化2和3发生在环外亚甲基碳丁基化发生在7元环,即,1-和3-位的2和仅在3-位共3,当用
正丁基锂处理时。环加成与四
氰乙烯给出了[8 + 2] -cycloadduct为2和所述加合物为[4 + 2] 3。