Process for the production of substituted aromatic hydrocarbons from corresponding anilines by dediazoniation

摘要

Substituted aromatic hydrocarbons, e.g. 1,3-difluorobenzene, are produced by dediazoniation of the corresponding aromatic primary amines by converting them into a corresponding diazonium salt in the presence of hypophosphorous acid and a metal catalyst so that the diazonium group is replaced by hydrogen as it is formed.