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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1703087Generated: October 30, 2026

Hydrochloric Acid → 4-[(3-Phenylprop-2-en-1-yl)amino]benzoic acid

https://huagongshe.com/reaction/1703087

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantPotassium HydroxideHCID 14797—
ReactantWater ethanolHCID 19096565—
ReactantEthyl 4-[(3-phenylprop-2-en-1-yl)amino]benzoateHCID 53948325—
SolventWaterHCID 962—
Product4-[(3-Phenylprop-2-en-1-yl)amino]benzoic acidHCID 54537106—

Reaction Steps

A mixture of 10 g. of ethyl p-(cinnamylamino)benzoate (prepared as described in Example 24), 10 g. of potassium hydroxide and 200 ml. of ethanol-water (9:1) is refluxed for 3 hours. The solution is acidified while hot with concentrated hydrochloric acid, diluted with water, cooled and filtered to give off-white crystals. Recrystallization from ethanol gives pale yellow crystals, m.p. 200°-202° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04350822
Source datasetuspto-grants-1982_09
ORD IDord-d6dda8e022394d429dfc6664585108b7
Source noteuspto-grants-1982_09