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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 552089Generated: October 25, 2026

Benzaldehyde → 2-(2-Benzylidenehydrazino)benzoic acid

https://huagongshe.com/reaction/552089

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzaldehydeHCID 240—
ReactantBenzoic acid, 2-hydrazinyl-, hydrochloride (1:1)HCID 104169—
SolventEthanolHCID 702—
SolventWaterHCID 962—
Product2-(2-Benzylidenehydrazino)benzoic acidHCID 22268769%

Reaction Steps

To a solution of 2-hydrazino-benzoic acid mono hydrochloric acid salt (13.66 g, 72.42 mmol) dissolved in water (580 mL) and ethanol (125 mL) was added a solution of benzaldehyde (7.35 mL, 72.42 mmol) in ethanol (20 mL) dropwise at room temperature. The reaction mixture was stirred at room temperature for an additional 3 hours. The resulting solid was collected by filtration and dried in a vacuum oven to provide 12.0 g (69%) of 2-(N′-benzylidene-hydrazino)-benzoic acid as a yellow solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07951800B2
Source datasetuspto-grants-2011_05
ORD IDord-f6f1e2feb8db4ee79020f74dde7b0dd4
Source noteuspto-grants-2011_05