for the synthesis of 2-aryl-perfluorobenzoxazoles was developed via a direct dual C–F functionalization of perfluorobenzene with arylformamide in the presence of a Fe(II)/NaH/DMSO system. Various substituted aryl formamides are tolerated giving good yields. The preliminary fluorescenceproperties (up to 99% fluorescence quantum yield of 3d) of the products and their applications in the synthesis of uniform
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