1435-51-4Relevant articles and documents
A green environmental protection of the bromobenzene [...] preparation method (by machine translation)
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Paragraph 0025-0056, (2018/11/26)
The present invention provides a green environmental protection of the bromobenzene [...] preparation method, comprises the following steps: sulfuric acid and [...] aniline added in a reaction kettle, stirring cooling to 5 - 10 °C, thermal insulation and slowly instillment bromide, dropping after the completion of the slow heating to 15 - 20 °C, thermal insulation and dropping hydrogen peroxide solution, the constant temperature reaction, again lowering the temperature to 0 - 5 °C, thermal insulation and dropping nitroso sulfuric acid, thermal insulation reaction, slow heating to 35 - 40 °C, thermal insulation and dropping isopropyl alcohol and water mixture, after dropping the stirring, heating up to 55 - 60 °C, thermal insulation, layered, separation [...] and oil reservoir; the oil reservoir is arranged in the rectification apparatus, first heating up to 65 - 70 °C, after the heat preservation, heating up to 83 - 85 °C, distillation separation, to obtain [...] bromobenzene and 3, 5 - dibromide fluoride; the water through distillation, obtained from the isopropyl alcohol, a mixture of water and acetone and sulfuric acid, the isopropanol, water and the mixture for catalytic hydrogenation, to obtain the isopropanol-water solution. (by machine translation)
Preparation process of fluorine substituted aromatic compound
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, (2008/06/13)
A preparation process of a fluorine substituted aromatic compound comprising reacting an alkali metal or alkali earth metal salt of an aromatic compound having a hydroxy group with an organic fluorinating agent is disclosed. As a representative fluorinating agent, a bis-dialkylamino-difluoromethane compound, for example, 2,2′-difluoro-1,3-dimethylimidazolidine, is exemplified. According to the process, an industrially useful fluorinated aromatic compound, for example, a fluorobenzene, a fluorine substituted benzophenone, a fluorine substituted diarylsulfone can be prepared with ease in economy without specific equipment.