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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 426622Generated: October 31, 2026

Hydrochloric Acid → 2-(8-Hydroxy-7-oxo-octyl)cyclopent-2-en-1-one

https://huagongshe.com/reaction/426622

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1,4-DioxaneHCID 31275—
Reactant2-[6-(Chloroformyl)hexyl]cyclopent-2-en-1-oneHCID 20287596—
SolventSodium chloride; waterHCID 57417360—
Product2-(8-Hydroxy-7-oxo-octyl)cyclopent-2-en-1-oneHCID 20287628—

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of 6.3 g of 2-[6-(chloroformyl)hexyl]-cyclopent-2-en-1-one (Example 268) and 16 g of tris-trimethylsilyloxyethylene (Example 267) are stirred at 90° to 100° C. under argon for one hour. To this mixture is added 25 ml of dioxane and 10 ml of 0.6 N hydrochloric acid. The mixture is heated at 80° C. for 30 minutes. The mixture is poured into brine and extracted with ether. The ether solution is washed with saturated sodium bicarbonate and dried over magnesium sulfate. The solvent is removed and the residue is chromatographed on a dry column of silica gel eluting with ether containing 2% acetic acid to give 1.7 g of the title compound (Rf =0.45).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04170597
Source datasetuspto-grants-1979_10
ORD IDord-d4fb9c3ab6f14b588004eabf8fb2c0d9
Source noteuspto-grants-1979_10