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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 881040Generated: October 31, 2026

Formic Acid → 5-Benzimidazolecarboxylic acid

https://huagongshe.com/reaction/881040

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormic AcidHCID 284—
Reactant3,4-Diaminobenzoic acidHCID 69263—
Product5-Benzimidazolecarboxylic acidHCID 459456—

Reaction Steps

3,4-diaminobenzoic acid (5 g, 32 mmol) and formic acid (20 ml) were mixed and refluxed overnight. Formic acid was removed on rotavapour and water added to the residue to obtain the solid. Solid was filtered and dried to obtain the title compound quantitatively.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08993612B2
Source datasetuspto-grants-2015_03
ORD IDord-35751864a8ba44259e31706addd54591
Source noteuspto-grants-2015_03