HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1925928Generated: October 31, 2026
Carbon tetrabromide → HCID 67521426, compound
https://huagongshe.com/reaction/1925928
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Carbon tetrabromide | HCID 11205 | — |
| Reactant | Triphenylphosphine | HCID 11776 | — |
| Reactant | HCID 67521184 | HCID 67521184 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | HCID 67521426 | HCID 67521426 | 49% |
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
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08178689B2 |
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| Source dataset | uspto-grants-2012_05 |
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| ORD ID | ord-6ddd51ef30634c2c92c0d3f01675ecaf |
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| Source note | uspto-grants-2012_05 |
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