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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2187318Generated: October 31, 2026

Water → HCID 18433855, compound

https://huagongshe.com/reaction/2187318

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
Reactant4-cyclopentylpentanoic acidHCID 228875—
ReactantHCID 178418348HCID 178418348—
SolventDiethyl EtherHCID 3283—
ProductHCID 18433855HCID 1843385553.5%

Reaction Conditions

Temperature5 °C

Reaction Steps

4-Cyclopentylpentanoic acid (3.4 g; 20 mmol; prepared in example 6) in diethyl ether (90 ml) was added at 0° C. to 1.6 M diethyl ether solution of methyllithium (25 ml; 40 mmol), and diluted with the same solvent (75 ml). After 3.5 hours stirring at 5° C., water (100 ml) was added, and the separated organic layer was washed with brine (3×400 ml), dried (MgSO4), concentrated in vacuo, and bulb-to-bulb distilled (125° C./0.2 torr) to give 1.8 g (53.5% yield) of 5-cyclopentylhexan-2-one.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06410000B1
Source datasetuspto-grants-2002_06
ORD IDord-52a4d48f96714d0ea72b3b9433c353c2
Source noteuspto-grants-2002_06