652-39-1, Name is 4-Fluoroisobenzofuran-1,3-dione, belongs to benzofurans compound, is a common compound. Formula: C8H3FO3In an article, once mentioned the new application about 652-39-1.
A process for the preparation of fluoroaniline compounds comprises the steps of (A) reacting an ammonium fluorophthalamate or a fluorophthalamic acid of the formula STR1 where n is 1 or 2 with an alkali or an alkali earth metal hypochlorite to form the corresponding fluoroanthranilic acid; and (B) decarboxylating the fluoroanthranilic acid by reaction with a mineral acid to form the corresponding fluoroaniline of the formula STR2 where n is as previously defined.
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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H2477O – PubChem