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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1447743Generated: October 31, 2026

Hydrochloric Acid → 4,5-Dichloro-2-(trichloromethyl)-1H-imidazole

https://huagongshe.com/reaction/1447743

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant4,5-Dichloro-2-(dichloromethylidene)-2H-imidazoleHCID 12482572—
SolventTolueneHCID 1140—
Product4,5-Dichloro-2-(trichloromethyl)-1H-imidazoleHCID 1248257389%

Reaction Steps

Dry hydrogen chloride was passed into a solution of 218 g (1.0 mol) of 4,5-dichloro-2-dichloromethyleneimidazole in about 2 liters of dry toluene until the formation of a precipitate had ended (at least 1 mol). After cooling(the HCl addition took place exothermically), filtering off and drying, 235 g (89% of theory) of 4,5-dichloro-2-trichloromethyl-imidazole of melting point 210° C. (with decomposition) were obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04178166
Source datasetuspto-grants-1979_12
ORD IDord-f1ca36b9265a41fa90bf5989878da843
Source noteuspto-grants-1979_12