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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1761902Generated: October 27, 2026

Hydrochloric Acid → 5-Chloro-3-formyl-2-hydroxybenzoic acid

https://huagongshe.com/reaction/1761902

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantHexamethylenetetramineHCID 4101—
ReactantTrifluoroacetic acidHCID 6422—
Reactant5-Chlorosalicylic AcidHCID 9447—
SolventWaterHCID 962—
Product5-Chloro-3-formyl-2-hydroxybenzoic acidHCID 183356—

Reaction Conditions

Temperature100 °C

Reaction Steps

A mixture of 102 g of 5-chloro-2-hydroxybenzoic acid, 166 g of hexamethylenetetramine and 600 ml of trifluoroacetic acid is heated at 100° C. overnight. 2.95 liters of water and 1.48 liters of 10% hydrochloric acid are added to the mixture and said mixture is heated at the same temperature for 15 minutes. After cooling, the resultant crystals are collected by filtration to give 96.9 g of 5-chloro-3-formyl-2-hydroxybenzoic acid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04829067
Source datasetuspto-grants-1989_05
ORD IDord-e707e82c42f946c9892f40a13062b89d
Source noteuspto-grants-1989_05