发明授权
US4263458A Preparation of aromatic fluoro-compounds 失效
芳香族氟化合物的制备

Preparation of aromatic fluoro-compounds
摘要:
4,4'-difluoro-benzophenone is prepared from 4,4'-diamino-diphenylmethane by diazotization in anhydrous or concentrated aqueous hydrogen fluoride and decomposition of the diazonium fluoride thus produced in the presence of nitrous acid or nitrite as oxidizing agent.
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