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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 273541Generated: October 25, 2026

4-Nitro-1,3-benzenediamine → 4-Bromo-6-nitro-benzene-1,3-diamine dihydrobromide salt

https://huagongshe.com/reaction/273541

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Nitro-1,3-benzenediamineHCID 21208—
ReactantBromineHCID 24408—
Solvent1,4-DioxaneHCID 31275—
Product4-Bromo-6-nitro-benzene-1,3-diamine dihydrobromide saltHCID 68980409—

Reaction Steps

The reaction scheme (CCLXIX) illustrates a synthetic process rthat included dropwise adding of 6.4 g bromine (40 mmol) to a solution of 4-nitrobenzene-1,3-diamine (5.56 g, 36.3 mmol), in 50 mL 1,4-dioxane, followed by stirring the solution was room temperature for 16 h. The yellow precipitate was isolated by filtration, washed with 1,4-dioxane (30 mL) and dried in vacuo to give 4-bromo-6-nitro-benzene-1,3-diamine dihydrobromide salt designated on the reaction scheme (CCLXIX) as compound 13 (8 g, 95%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07456176B2
Source datasetuspto-grants-2008_11
ORD IDord-6c20543da1434e2e9a3ca74e131e96bd
Source noteuspto-grants-2008_11