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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1253815Generated: November 4, 2026

Hydrogen Bromide → HCID 67283800, compound

https://huagongshe.com/reaction/1253815

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
ReactantAcetic Acid Mixture with Hydrobromic AcidHCID 21893785—
ReactantHCID 49719425HCID 49719425—
SolventTolueneHCID 1140—
ProductHCID 67283800HCID 6728380055%

Reaction Conditions

Temperature90 °C

Reaction Steps

A suspension of 1-tosyl-4-(2,2,2-trifluoroethyl)piperazine (700 mg, 2.2 mmol) in a 30% HBr/acetic acid solution was stirred at 90° C. for 90 minutes. Toluene was added to the suspension. An orange solid was filtered off and washed with diethyl ether to afford the desired compound (400 mg, 55% yield) as a bis HBr salt.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08455507B2
Source datasetuspto-grants-2013_06
ORD IDord-5f611412e4834a08b12e9c9c8019c399
Source noteuspto-grants-2013_06