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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1112649Generated: November 2, 2026

p-Toluenesulfonic acid → Ethyl [4-(5-oxocyclopent-1-en-1-yl)butoxy]acetate

https://huagongshe.com/reaction/1112649

Reaction equation

Participants

RoleNameHCIDCharge
Reactantp-Toluenesulfonic acidHCID 6101—
Reactant2-(6-Carboxy-5-oxahexyl)-2-cyclopentenoneHCID 20465613—
SolventEthanolHCID 702—
ProductEthyl [4-(5-oxocyclopent-1-en-1-yl)butoxy]acetateHCID 21767824—

Reaction Steps

In the manner described in Example 23, treatment of 2-(6-carboxy-5-oxahexyl)-2-cyclopentenone with p-toluenesulfonic acid in ethanol produces the subject product as a light yellow oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04123456
Source datasetuspto-grants-1978_10
ORD IDord-43002a99c0244bd2bef8d6a06c6c0813
Source noteuspto-grants-1978_10