作者:W. Hafferl、E. Fischer、G. Juppe
DOI:10.1002/jlcr.2590010302
日期:1965.7
Aryl-substituted cyclohexanols were obtained by reacting 14C-labelled phenyllithium with 2- and 4-phenylcyclohexanone, and 2-and 4-xenyllithium with 14C-labelled cyclohexanone. Heated with palladium charcoal, these yielded 14C-labelled terphenyls. 1, 2-diphenylcyclohexanol stereo-isomers were converted into diphenylcyclohexene in order to raise the yield prior to aromatisation. The following 14C-labelled compounds have so far been prepared by this method: o-terphenyl-(1, 2, 3, 4, 5, 6)-14C, p-terphenyl-(1, 2, 3, 4, 5, 6)-14C, o-terphenyl-1-14C and p-terphenyl-1-14C.
通过 14C 标记的苯基锂与 2-和 4-苯基环己酮反应,以及 2-和 4-烯基锂与 14C 标记的环己酮反应,得到了芳基取代的环己醇。用钯炭加热后,可得到 14C 标记的三联苯。1,2-二苯基环己醇立体异构体被转化为二苯基环己烯,以便在芳香化之前提高产量。迄今为止,已经用这种方法制备出了以下 14C 标记的化合物:邻三联苯-(1, 2, 3, 4, 5, 6)-14C、对三联苯-(1, 2, 3, 4, 5, 6)-14C、邻三联苯-1-14C 和对三联苯-1-14C。