Interaction of polyfluoroaromatic compounds with o-aminophenol. The Smiles rearrangement in the polyfluoroaromatic series
作者:E.F. Kolchina、T.N. Gerasimova
DOI:10.1016/s0022-1139(00)81035-0
日期:1988.12
The reactions of polyfluoroaromatic compounds containing an electron-attracting substituent other than fluorine in the aromatic ring with o-aminophenol proceed at the amino or hydroxy group and lead to the corresponding hydroxydiarylamines (in neutral media) or aminodiaryl ethers (in alkaline media). The latter compounds, unlike 2,3,4,5,6-pentafluoro- 2'-aminodiphenyl ether, are transformed in dimethylformamide
在芳环中含有除氟以外的吸引电子的取代基的多氟芳族化合物与邻氨基苯酚的反应在氨基或羟基上进行,并导致形成相应的羟基二芳基胺(在中性介质中)或氨基二芳基醚(在碱性介质中)。与2,3,4,5,6-五氟-2'-氨基二苯醚不同,后一种化合物在二甲基甲酰胺(DMFA)中转化为异构的多氟-2-羟基二芳基胺(Smiles重排)。取代基的电子吸引能力的提高导致活化能的降低和重排速率常数的提高。