作者:R.D. Chambers、D.J. Spring
DOI:10.1016/s0040-4020(01)90735-5
日期:1971.1
An unambiguous synthesis of heptafluoro-2-methoxydibenzothiophen (7) is reported. Structures for the products of substitution by MeO− in octafluorodibenzothiophen (1), octafluorofluoren-9-one (3), and the related octafluoro-2,2′-dihydrobiphenyl (4) and 19F NMR assignments are amended. Orientation of nucleophilic substitution in 2,2′-dibromooctafluorobiphenyl is established. The results of competition
据报道明确合成了七氟-2-甲氧基二苯并噻吩(7)。为产品的替代通过的MeO结构-在octafluorodibenzothiophen(1),octafluorofluoren -9-酮(3),以及相关的八氟-2,2'- dihydrobiphenyl(4)和19个F NMR分配进行修正。建立了2,2'-二溴八氟联苯中亲核取代的方向。提出并讨论了二苯并系列全氟化衍生物与相应联苯系统衍生物的竞争反应结果,并与这些系统中亲核取代的取向有关。