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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1742782Generated: October 31, 2026

Hydrochloric Acid → HCID 19005530, compound

https://huagongshe.com/reaction/1742782

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1,4-DibromobenzeneHCID 7804—
ReactantMagnesiumHCID 5462224—
ReactantHCID 13479951HCID 13479951—
SolventDiethyl EtherHCID 3283—
ProductHCID 19005530HCID 19005530—

Reaction Steps

A solution of 8.5 g of p-dibromobenzene in 35 ml of anhydrous diethyl ether was added dropwise under stirring at 15°-20° C. to 1 g of magnesium metal powder, followed by reaction at room temperature for 1 hour so that a Grignard reagent was formed. After 5 g of 4-pentylcyclohexenone were added under stirring at -10° to 0° C. to the thus-formed Grignard reagent, they were reacted at room temperature for additional 1 hour. After the completion of the reaction, diluted hydrochloric acid was added dropwise to the reaction mixture, followed by the extraction of the reaction mixture with diethyl ether. After the extract was washed with saturated NaCl, anhydrous sodium sulfate was added to dry the extract. The diethyl ether was distilled off under reduced pressure, whereby 4-(4-bromophenyl)-4-hydroxy-1-pentylcyclohexene was obtained as a crude reaction product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05342546
Source datasetuspto-grants-1994_08
ORD IDord-120902810b9a484f915edad38de65088
Source noteuspto-grants-1994_08