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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2248341Generated: October 30, 2026

Hydrochloric Acid → HCID 19995903, compound

https://huagongshe.com/reaction/2248341

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantHydrazine hydrate (1:1)HCID 24654—
ReactantHCID 14990940HCID 14990940—
SolventEthanolHCID 702—
ProductHCID 19995903HCID 1999590354.3%

Reaction Steps

A mixture of 6.5 parts of 1-[(4-fluoro-3-nitrophenyl)methyl]-1H-imidazole, 6.01 parts of hydrazine monohydrate and 80 parts of ethanol was stirred and refluxed for 5 hours. After cooling, 12 parts of a hydrochloric acid solution 5N were added. The whole was evaporated. The residue was stirred with 30 parts of water and the precipitated product was filtered off and boiled in 40 parts of 2-propanol. 2-Propanol, saturated with hydrogen chloride, was added. The salt was allowed to crystallize at room temperature. It was filtered off and dried, yielding 4.1 parts (54.3%) of 6-(1H-imidazol-1-ylmethyl)-1H-benzotriazol- 1-ol-monohydrochloride; mp. 207.4° C. (compound 158).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05039677
Source datasetuspto-grants-1991_08
ORD IDord-da79d5942b014286bcf8a4d0a8d02861
Source noteuspto-grants-1991_08