Cyclopentanone is the organic compound with the formula (CH<sub>2</sub>)<sub>4</sub>CO. This cyclic ketone is a colorless volatile liquid.
Preparation
Ketonic decarboxylation of adipic acid gives cyclopentanone. The reaction is conducted at elevated temperatures in the presence of barium hydroxide.
:frameless|400px
The Pd-catalyzed oxidation of cyclopentene also gives cyclopentanone.
Uses
Cyclopentanone is common precursor to fragrances, especially those related to jasmine and jasmone. Examples include 2-pentyl- and 2-heptylcyclopentanone. It is a versatile synthetic intermediate, being a precursor to cyclopentobarbital.
thumb|left|144px|Cyclopentobarbital, a drug made from cyclopentanone
Cyclopentanone is also used to make cyclopentamine, the pesticide pencycuron,