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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2308072Generated: October 26, 2026

Octane → HCID 10219687, compound

https://huagongshe.com/reaction/2308072

Reaction equation

Participants

RoleNameHCIDCharge
ReactantOctaneHCID 356—
ReactantBromineHCID 24408—
ReactantCyclopentanone, 2-(1-hydroxyheptyl)-HCID 11008912—
SolventWaterHCID 962—
ProductHCID 10219687HCID 1021968788%

Reaction Steps

In a 100 ml four-neck flask fitted with a thermometer, a reflux condenser and a stirrer were placed 2-(1-hydroxyheptyl)cyclopentanone (40 g) synthesized in Reference Example 3, bromine (0.4 g) and n-octane (10 ml), and water was removed under refluxing, followed by 4 hours of the reaction at 120° C. The reaction mixture was washed with water and the layers were separated from each other. The resulting organic layer was washed with saturated brine and separated. The organic layer was evaporated on a rotary evaporator under reduced pressure to recover n-octane, whereby a crude product (39 g) was obtained. The product was distilled using a Claisen distillation apparatus to obtain 32 g of 2-heptyl-2-cyclopentenone (boiling point: 111° C./900 Pa; GC purity: 97.8%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06833481B2
Source datasetuspto-grants-2004_12
ORD IDord-4c9b9e1b6cfe48ae8b9804052e06a87e
Source noteuspto-grants-2004_12