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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 536339Generated: October 29, 2026

Hydrochloric Acid → 4-Bromo-5-methoxy-2-methylaniline

https://huagongshe.com/reaction/536339

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium HydroxideHCID 14798—
ReactantHCID 44512476HCID 44512476—
SolventMethanolHCID 887—
Product4-Bromo-5-methoxy-2-methylanilineHCID 15278592—

Reaction Conditions

Temperature95 °C

Reaction Steps

N-(4-bromo-5-methoxy-2-methylphenyl)acetamide was dissolved in methanol (15 mL) and concentrated HCl (30 mL). The mixture was refluxed at 95° C. overnight. After cooling to room temperature, the mixture was poured into ice water, and basified to pH=12 with conc. NaOH aqueous solution. The mixture was then extracted with ethyl acetate (3×50 mL). The combined organic layer was dried over Na2SO4 and concentrated. The crude product was purified by silica chromatography (15% ethyl acetate in hexanes) to give 4-bromo-5-methoxy-2-methylaniline as a beige solid; 1H NMR (400 mHz, CDCl3) 7.20 (s, 1H), 6.37 (s, 1H), 4.6 (br, 2H), 3.82 (s, 3H), 2.12 (s, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08859574B2
Source datasetuspto-grants-2014_10
ORD IDord-997572087dea4e39bea1f5fe0636959a
Source noteuspto-grants-2014_10