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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 648495Generated: October 29, 2026

Hydrogen Bromide → HCID 13731500, compound

https://huagongshe.com/reaction/648495

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
Reactant1-(4-Methoxyphenyl)-2-methylpiperazineHCID 2723777—
SolventWaterHCID 962—
ProductHCID 13731500HCID 1373150097%

Reaction Steps

A mixture of 43 parts of 1-(4-methoxyphenyl)-2-methylpiperazine and 375 parts of a hydrobromic acid solution 48% in water was stirred and refluxed overnight. The reaction mixture was evaporated and the residue was crystallized from 2-propanol. The product was filtered off and dried, yielding 72 parts (97%) of 4-(2-methyl-1-piperazinyl)phenol dihydrobromide (77).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04735942
Source datasetuspto-grants-1988_04
ORD IDord-13d79980eaa241828ab4a110a917f15f
Source noteuspto-grants-1988_04