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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 543046Generated: October 30, 2026

Hydrochloric Acid → HCID 178429129, compound

https://huagongshe.com/reaction/543046

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium CarbonateHCID 10340—
Reactant4-AminobenzonitrileHCID 13396—
ReactantSodium NitriteHCID 23668193—
Reactant4-Hydroxy-6-methyl-2-pyroneHCID 54675757—
SolventWaterHCID 962—
ProductHCID 178429129HCID 17842912994%

Reaction Conditions

Temperature5 °C

Reaction Steps

To a mixture of 5.9 g (0.05 mol) 4-aminobenzonitrile and 20 ml of 12N hydrochloric acid in 25 ml of water, cooled to 5° C., there is added dropwise a solution of 3.8 g (0.055 mol) sodium nitrite in 10 ml of water. The solution formed is added to an ice cooled solution of 6.3 g (0.05 mol) 4-hydroxy-6-methyl pyr-2-one and 22 g (0.205 ml) of sodium carbonate in 125 ml of water. The suspension formed is stirred at 5° C. for 1 hr., at room temperature for 3 hrs. and is vacuum filtered. The filter cake is air dried to afford 12 g (94% yield) of product, mp 300° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04661145
Source datasetuspto-grants-1987_04
ORD IDord-731688190a134e83ae7e6143deda9d3d
Source noteuspto-grants-1987_04