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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1028477Generated: October 30, 2026

1,3-Dibromo-5,5-dimethylhydantoin → Diethyl dioxobutanedioate

https://huagongshe.com/reaction/1028477

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,3-Dibromo-5,5-dimethylhydantoinHCID 6479—
Reactant2,2'-Azobis(2,4-dimethyl-4-methoxyvaleronitrile)HCID 85867—
ReactantDiethyl tartrateHCID 6993580—
SolventAcetic AcidHCID 176—
ProductDiethyl dioxobutanedioateHCID 263091—

Reaction Conditions

Temperature55 °C

Reaction Steps

L-Tartaric acid diethyl ester (2.0 g), acetic acid (20 ml), 1,3-dibromo-5,5-dimethylhydantoin (6.0 g) and 2,2′-azobis(4-methoxy-2,4-dimethylvaleronitrile) (30 mg) were mixed, and the reaction solution was stirred at 55° C. for 3 hours. The reaction solution was concentrated under reduced pressure until its volume became 10 ml to afford a solution of diethyl dioxobutanedioate in acetic acid as a yellow liquid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08735598B2
Source datasetuspto-grants-2014_05
ORD IDord-4e47402c053a4f6dbc51fba8896a19f6
Source noteuspto-grants-2014_05