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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1777124Generated: October 31, 2026

Hydrochloric Acid → 3-acetamidophenoxyacetic acid

https://huagongshe.com/reaction/1777124

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantEthyl bromoacetateHCID 7748—
ReactantPotassium CarbonateHCID 11430—
Reactant3-HydroxyacetanilideHCID 12124—
ReactantSodium HydroxideHCID 14798—
SolventAcetonitrileHCID 6342—
SolventWater ethanolHCID 19096565—
Product3-acetamidophenoxyacetic acidHCID 236123—

Reaction Conditions

Temperature80 °C

Reaction Steps

To a stirred mixture of N-(3-hydroxyphenyl)acetamide (300 mg, 2.0 mmol) in MeCN (5 mL) was added ethyl bromoacetate (500 mg, 3 mmol) and K2CO3 (828 mg, 6 mmol). The mixture was stirred at 80° C. for 4 hours, filtered and the filtrate was concentrated. NaOH (80 mg, 2 mmol) and water:EtOH (1:1, 10 mL) was added to the mixture. This mixture was then stirred at 50° C. for 4 hours before being acidified by 1M HCl, extracted with ethyl acetate (2×30 mL). The combined extracts were washed with brine (30 mL), dried over anhydrous Na2SO4 and concentrated with the residue used directly for the next step. LCMS (m/z): 183.0 (M+1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09266836B2
Source datasetuspto-grants-2016_02
ORD IDord-66601156c8514b648b6ed7d3382f61f7
Source noteuspto-grants-2016_02