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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 903202Generated: October 31, 2026

Cysteamine Hydrochloride → 2-(((5-Methyl-1H-imidazol-4-yl)methyl)thio)ethylamine dihydrochloride

https://huagongshe.com/reaction/903202

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCysteamine HydrochlorideHCID 9082—
Reactant4-Methylimidazol-5-ylmethanolhydrochlorideHCID 3084707—
SolventAcetic AcidHCID 176—
Product2-(((5-Methyl-1H-imidazol-4-yl)methyl)thio)ethylamine dihydrochlorideHCID 3015999184.6%

Reaction Steps

(a) A solution of 4-hydroxymethyl-5-methylimidazole hydrochloride (30.0 g.) and cysteamine hydrochloride (23.0 g.) in acetic acid (200 ml.) was heated under reflux for 10 hours. Following cooling to 15°-20°, the solid which crystallised was collected and washed with isopropyl alcohol to give 4-methyl-5-[(2-aminoethyl)thiomethyl]imidazole dihydrochloride (45.5 g.), m.p. 189°-192°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04226874
Source datasetuspto-grants-1980_10
ORD IDord-ba413a5eb1d74cde9331e16aa4f6b8c5
Source noteuspto-grants-1980_10