Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 452559Generated: October 25, 2026

Methylamine → 4-[2-(4-bromophenyl)-1-(4-methoxyphenyl)ethyl]-1-methyl-1H-imidazol-2-amine

https://huagongshe.com/reaction/452559

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethylamineHCID 6329—
ReactantSodium HydroxideHCID 14798—
ReactantS-Ethylisothiuronium bromideHCID 200213—
Reactant1-Bromo-4-(4-bromophenyl)-3-(4-methoxyphenyl)butan-2-oneHCID 86650847—
SolventMethanolHCID 887—
Product4-[2-(4-bromophenyl)-1-(4-methoxyphenyl)ethyl]-1-methyl-1H-imidazol-2-amineHCID 44219587100.7%

Reaction Conditions

Temperature25 °C

Reaction Steps

1-bromo-4-(4-bromophenyl)-3-(4-methoxyphenyl)butan-2-one (0.15 g, 0.36 mmol) was dissolved in methanol (1.8 mL) and methylamine (0.36 mL, 0.72 mmol, 2M solution in methanol) was added in one portion and the reaction was allowed to stir at 25° C. for 0.5 hour. S-ethylisothiourea hydrobromide (0.27 mg, 1.46 mmol) and NaOH (0.61 mL, 1.82 mmol, 3M solution in water) were added to the solution and the resulting solution was allowed to stir at 25° C. for 16 hours. The reaction was purified using reverse phase C-18 chromatography (acetontitrile and water system) to afford 140 mg of 4-[2-(4-bromophenyl)-1-(4-methoxyphenyl)ethyl]-1-methyl-1H-imidazol-2-amine as a yellow solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08492387B2
Source datasetuspto-grants-2013_07
ORD IDord-af88c8423c9e4317bb520879787aed68
Source noteuspto-grants-2013_07