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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1290149Generated: October 27, 2026

4-Aminobenzoic Acid → Benzoic Acid

https://huagongshe.com/reaction/1290149

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Aminobenzoic AcidHCID 978—
ReactantMaleic AnhydrideHCID 7923—
SolventAcetoneHCID 180—
SolventMethanolHCID 887—
ProductBenzoic AcidHCID 243163.4%

Reaction Steps

Solution "A" was prepared by dissolving 42.6 grams of para-aminobenzoic acid in 300 ml acetone plus 50 ml of methyl alcohol. Solution "B" was prepared by dissolving 36.6 g of maleic anhydride in 100 ml acetone. Solution "B" was added to solution "A" in one shot at room temperature with stirring. The mixture was allowed to stir for one to two hours until a yellow precipitate was formed. The precipitate was then washed with fresh acetone and dried to yield approximately 62 grams of maleamidated benzoic acid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05750725
Source datasetuspto-grants-1998_05
ORD IDord-bef24dac17724f60abcd8833e6390338
Source noteuspto-grants-1998_05