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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1255819Generated: October 31, 2026

Hydrochloric Acid → HCID 178506259, compound

https://huagongshe.com/reaction/1255819

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantTrifluoroacetic acidHCID 6422—
Reactant4-Bromobenzene-1,2-diamineHCID 323593—
ProductHCID 178506259HCID 17850625961.3%

Reaction Steps

A mixture of 4-bromobenzene-1,2-diamine (3.0 g, 16.0 mmol), TFA (9.5 mL, 128.3 mmol) and aq. HCl (3 M, 32 mL) was heated to reflux overnight. The reaction mixture was concentrated and purified by column chromatography to afford the titled compound (2.60 g, 60%). LCMS: 265.0 [M+1]+. 1HNMR (400 MHz, DMSO-d6): δ 7.52 (dd, J=8.8 Hz, 1.2 Hz, 1H), 7.69 (d, J=8.4 Hz, 1H), 7.95 (s, 1H), 14.20 (br, 1H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08461157B2
Source datasetuspto-grants-2013_06
ORD IDord-25a171be88a4444b93ec373434dc9922
Source noteuspto-grants-2013_06