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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 654606Generated: October 30, 2026

Bromotrichloromethane → Malonic acid, bromoethyl-, diethyl ester

https://huagongshe.com/reaction/654606

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBromotrichloromethaneHCID 6383—
ReactantDiethyl ethylmalonateHCID 8610—
CatalystPotassium CarbonateHCID 11430—
CatalystTetrabutylammonium Fluoride TrihydrateHCID 11726816—
ProductMalonic acid, bromoethyl-, diethyl esterHCID 14146995%

Reaction Steps

In a 10 mL round-bottom flask, 1.88 g of diethyl ethylmalonate (10 mmol), 2.18 g of bromotrichloromethane (11 mmol), 79 mg of tetra-n-butylammonium fluoride trihydrate (0.25 mmol), and 69 mg of potassium carbonate (0.5 mmol) were stirred at 24° C. for 1 h. An exothermic reaction caused the temperature of the mixture to rise to 40° C. After filtration of the solids, the solution was found to contain 2.5 g (95% yield) of diethyl α-bromo-α-ethylmalonate.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05132475
Source datasetuspto-grants-1992_07
ORD IDord-c901fdc568f648ab94821a48eee83946
Source noteuspto-grants-1992_07