Ionic melting salt imidazole hydrochloride mediated the decarboxylation of (hetero)aromatic carboxylic acids

Imidazole hydrochloride, a hydrochloric acid carrier, was used to mediate the decarboxylation of ortho-para position amino-substituted aromatic acids and nitrogen-containing heterocyclic acids, which gave excellent yields within a short time. In addition, the method can be well adapted to a gram scale, and the imidazole hydrochloride additives can be appropriately recovered for secondary utilization.