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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1066596Generated: October 27, 2026

Hydrochloric Acid → 5-Ethyl-2-hydroxybenzaldehyde

https://huagongshe.com/reaction/1066596

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantWaterHCID 962—
ReactantHexamethylenetetramineHCID 4101—
Reactant4-EthylphenolHCID 31242—
SolventAcetic AcidHCID 176—
SolventDiethyl EtherHCID 3283—
Product5-Ethyl-2-hydroxybenzaldehydeHCID 6429811—

Reaction Steps

114 g of hexamethylenetetramine were added to a solution of 20 g of 4-ethylphenol in 400 ml of AcOH. The reaction solution was stirred for 5 hrs. at 100° C. Then, 150 ml of H2O and 150 ml of 25% HCl solution were added. The mixture was stirred for 1 hr. at 100° C. Then, it was left to cool to room temperature. The crude product was isolated by extraction with diethyl ether and purified by chromatography on silica gel. There were obtained 8.6 g of 5-ethyl-2-hydroxy-benzaldehyde as a light yellow liquid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06242644B1
Source datasetuspto-grants-2001_06
ORD IDord-5b5ee012afe546ee9f9b5d1fb7ed5680
Source noteuspto-grants-2001_06