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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 70751Generated: October 29, 2026

Selenium Dioxide → 4-Bromo-2,1,3-benzoselenadiazole

https://huagongshe.com/reaction/70751

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSelenium DioxideHCID 24007—
Reactant3-Bromobenzene-1,2-diamineHCID 12489839—
SolventEthanolHCID 702—
SolventWaterHCID 962—
Product4-Bromo-2,1,3-benzoselenadiazoleHCID 71150192—

Reaction Steps

The specific preparation is described as follows: refluxing 3-bromo-1,2-diaminobenzene in ethanol solution, then adding into selenium dioxide dissolved in hot water, after that, refluxing for 2 hours. The precipitation is recrystallized with ethyl acetate after being filtered to get 4-bromo-2,1,3-benzoselenadiazole finally.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08822634B2
Source datasetuspto-grants-2014_09
ORD IDord-7150227821db4b80bc2389f71b850cfe
Source noteuspto-grants-2014_09