Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 333316Generated: October 29, 2026

Ethanol → HCID 68753467, compound

https://huagongshe.com/reaction/333316

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
Reactant2-oxaspiro[4.4]nonane-1,3-dioneHCID 2737102—
ProductHCID 68753467HCID 68753467—

Reaction Conditions

Temperature70 °C

Reaction Steps

A solution of 2-oxaspiro[4.4]nonane-1,3-dione (522 mg, 3.39 mmol) in anhydrous EtOH (15 ml) was allowed to stir at 70° C. for 22 hours under nitrogen. The reaction mixture was concentrated to give a crude 1-(2-ethoxy-2-oxoethyl)cyclopentanecarboxylic acid (compound A, 672 mg). The product (86% purity) was used for next step without further purification; 1H NMR (400 MHz, CDCl3) δ ppm 1.24 (t, J=7.2 Hz, 3H) 1.57-1.81 (m, 6H) 2.19-2.25 (m, 2H) 2.69 (s, 2H) 4.12 (q, J=7.2 Hz, 3H) 11.65 (br s, 1H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08877815B2
Source datasetuspto-grants-2014_11
ORD IDord-eac45998f3804510bbb335e5fe226a3e
Source noteuspto-grants-2014_11