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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 461249Generated: October 29, 2026

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

https://huagongshe.com/reaction/461249

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 numberUS04061672
Source datasetuspto-grants-1977_12
ORD IDord-c5d7498239fc4037bd46d400864f6fe5
Source noteuspto-grants-1977_12