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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1018113Generated: October 28, 2026

Sodium Carbonate → HCID 9949633, compound

https://huagongshe.com/reaction/1018113

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium CarbonateHCID 10340—
ReactantBromineHCID 24408—
ReactantHCID 18406103HCID 18406103—
CatalystIronHCID 23925—
SolventDichloromethaneHCID 6344—
ProductHCID 9949633HCID 994963395%

Reaction Conditions

Temperature0 °C

Reaction Steps

2.00 g (10.4 mmol) of 4-methoxymethyl-4-methyl-chroman was dissolved in 25 ml of abs. CH2Cl2 and treated with a catalytic amount of Fe-powder and Na2CO3. After cooling to 0° C., 1.21 m of bromine (1.1 eq.) was added and the mixture kept for 0.6 h at this temperature. Pouring onto crushed ice, extraction with diethylether, washing the organic phase with water, drying it over magnesium sulfate, filtration and evaporation of the solvents, and ensuing flash chromatography over SiO2 (hexane/ethylacetate 95/5) yielded 1.676 g of pure title compound as colorless oil (GC>95%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06479670B1
Source datasetuspto-grants-2002_11
ORD IDord-ffa4f2ba9ca945d4a236b0801b8bccae
Source noteuspto-grants-2002_11