Biphenylenes. Part XXIII. Synthesis of octafluorobiphenylene and its conversion into heptafluoro-1-and heptafluoro-2-methoxybiphenylene
作者:D. V. Gardner、J. F. W. McOmie、P. Albriksten、R. K. Harris
DOI:10.1039/j39690001994
日期:——
Octafluorobiphenylene has been prepared by the pyrolysis of tetrafluorophthalic anhydride at 750°/0.6 ± 0.1 mm. Reaction of the biphenylene with sodium methoxide gave mixtures containing mono- and polymethoxypoly-fluorobiphenylenes. Treatment of the biphenylene with potassium hydroxide followed by diazomethane gave heptafluoro-1- and heptafluoro-2-methoxybiphenylene. The structure of the latter (and
八氟联苯是通过四氟邻苯二甲酸酐在750°/ 0.6±0.1 mm处热解制备的。联苯与甲醇钠反应,得到含有单和多甲氧基多氟联苯的混合物。用氢氧化钾,然后用重氮甲烷处理联苯,得到七氟-1-和七氟-2-甲氧基联苯。19 F nmr的详细研究显示了后者的结构(因此也涉及前者的结构)。两种异构体的取向均通过1 H nmr光谱确认。讨论了八氟联苯的19 F nmr光谱。