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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 993049Generated: October 29, 2026

Hydrogen Bromide → HCID 18408835, compound

https://huagongshe.com/reaction/993049

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
ReactantBromineHCID 24408—
ReactantHCID 18408750HCID 18408750—
SolventWaterHCID 962—
ProductHCID 18408835HCID 18408835—

Reaction Conditions

Temperature2.5 °C

Reaction Steps

To a suspension of 5-(4-Methoxyphenyl)barbituric acid (222 mg) in 3 ml of water, cooled to 0-5° C. with ice bath, are added 136 μl of 48% hydrobromic acid and 56 μl of bromine, dropwise. After 1 hour at a temperature below 10° C., the solid which separated is collected by filtration and washed on the filter with water. The solid is dried for several hours under vacuum at 50° C., to give 283 mg of the product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06472396B1
Source datasetuspto-grants-2002_10
ORD IDord-2665cb084cde4d90af098c366a82a8bb
Source noteuspto-grants-2002_10