Polyhalogenoallenes. Part III. Isomerisation of the dimer of tetrafluoroallene, perfluoro-(1,2-dimethylenecyclobutane), to perfluoro-(2-methyl-3-methylenecyclobutene)
作者:R. E. Banks、M. G. Barlow、W. R. Deem、R. N. Haszeldine、D. R. Taylor
DOI:10.1039/j39660000981
日期:——
Pyrolysis, preferably in the presence of cæsium fluoride, of perfluoro-(1,2-dimethylenecyclobutane) effects its isomerisation to perfluoro-(2-methyl-3-methylenecyclobutene), the structure of which was confirmed by 19F nuclear magnetic resonance analysis of the compound itself and of its photo-dichlorides, 3-chloro-1-chlorodifluoromethyl-3,4,4-trifluoro-2-trifluoromethylcyclobutene and 3-chloro-3-c
全氟-(1,2-二亚甲基环丁烷)的热解,最好在氟化铯的存在下进行,使其异构化为全氟-(2-甲基-3-亚甲基环丁烯),其结构经19 F核磁共振分析证实该化合物本身及其光二氯化物,3-氯-1-氯二氟甲基-3,4,4-三氟-2-三氟甲基环丁烯和3-氯-3-氯二氟甲基-1,4,4-三氟-2-三氟甲基环丁烯。将化学位移和偶合常数制成表格。