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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1925928Generated: October 31, 2026

Carbon tetrabromide → HCID 67521426, compound

https://huagongshe.com/reaction/1925928

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCarbon tetrabromideHCID 11205—
ReactantTriphenylphosphineHCID 11776—
ReactantHCID 67521184HCID 67521184—
SolventDichloromethaneHCID 6344—
ProductHCID 67521426HCID 6752142649%

Reaction Conditions

Temperature0 °C

Reaction Steps

To an ice-cooled mixture of 3-Hydroxymethyl-2H-chromene-2-carboxylic acid ethyl ester (1.73 g, 7.39 mmol) in methylene chloride (25 mL) was added commercially available carbon tetrabromide (2.70 g, 8.13 mmol) and commercially available triphenylphosphine (1.94 g, 7.39 mmol). After addition was complete the mixture was stirred at 0° C. for 6 hours. Upon completion of the reaction, the methylene chloride was removed under reduced pressure. The crude product obtained was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 40 g; (0% to 90% ethyl acetate/hexane) to afford 3-bromomethyl-2H-chromene-2-carboxylic acid ethyl ester as a yellow oil, 1.08 g (49% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08178689B2
Source datasetuspto-grants-2012_05
ORD IDord-6ddd51ef30634c2c92c0d3f01675ecaf
Source noteuspto-grants-2012_05