Polyfluoroarenes. Part XV. Diazo-oxides and related compounds
作者:J. M. Birchall、R. N. Haszeldine、J. Nikokavouras、E. S. Wilks
DOI:10.1039/j39710000562
日期:——
Pentafluoronitrobenzene reacts with potassium hydroxide in t-butyl alcohol to give mainly tetrafluoro-2-and tetra-fluoro-4-nitrophenol, with traces of trifluoro-4-nitroresorcinol. Reduction of each of the major products with tin and hydrochloric acid gives the corresponding aminophenol, which yields 1-diazotetrafluorobenzene 2-oxide or 1-diazotetrafluorobenzene 4-oxide on treatment with sodium nitrite
五氟硝基苯与氢氧化钾在叔丁醇中反应,主要生成四氟-2-和四氟-4-硝基苯酚,以及痕量的三氟-4-硝基间苯二酚。用锡和盐酸还原每种主要产物,得到相应的氨基苯酚,在亚硝酸钠的70%硫酸水溶液中处理,生成1-氧化重氮四氟苯或2-氧化重氮四氟苯。苯中1,2-重氮氧化物的光化学或热分解反应可得到2,3,4,5-四氟-6-羟基联苯,苯甲腈,乙腈或异硫氰酸苯酯中1,2-重氮氧化物的热分解反应生成4,5,6,7-四氟-2-苯基苯并恶唑,4,5,6,7-四氟-2-甲基苯并恶唑或4,5,6,7-四氟-2-苯基-ylimino-1,3-苯并沙硫醇。