Homolytic reactions of perfluoroaromatic compounds. Part III. Reactions of benzoyl peroxide with hexafluorobenzene, chloro-, bromo-, and nitro-pentafluorobenzene, and pentafluoropyridine
作者:P. H. Oldham、Gareth H. Williams、Barbara A. Wilson
DOI:10.1039/j29700001346
日期:——
The reaction of benzoyl peroxide with hexafluorobenzene has been shown to give 2,3,4,5,6-pentafluorobiphenyl and a residue whose relative yields depend mainly on the conditions used for the distillation of the biaryl from the reaction mixtures. This supports the suggestion made previously that the biaryl is formed partly by defluorination of σ-complexes during reaction, and partly by thermal breakdown
已经显示过氧化苯甲酰与六氟苯的反应产生2,3,4,5,6-五氟联苯和其相对产率主要取决于用于从反应混合物中蒸馏联芳基的条件的残余物。这支持了先前提出的建议,即联芳基部分是通过在反应过程中σ配合物的脱氟,部分是通过在蒸馏过程中σ配合物的二聚体的热分解而形成的。氯,溴和硝基五氟苯与五氟吡啶的类似苯基化反应可得到异构体产物的混合物。已测量并讨论了这些异构体与氯和溴五氟苯和五氟吡啶形成的比例。