4-Piperidone

4-Piperidone is an organic compound with the molecular formula OC(CH₂)₄NH. It can be viewed as a derivative of piperidine. 4-Piperidone is used as an intermediate in the manufacture of chemicals and pharmaceutical drugs. Substituted and dehydro derivatives of 4-piperidinone are intermediates in alkaloid syntheses.^[1]

4-Piperidone

Names
Preferred IUPAC name Piperidin-4-one
Other names 4-Piperidone Azinanone Azinan-4-one
Identifiers
CAS Number	41661-47-6 Y
3D model (JSmol)	Interactive image
ChemSpider	31091 Y
ECHA InfoCard	100.050.420
EC Number	255-481-1
PubChem CID	33721
UNII	15WP1EA7UH Y
CompTox Dashboard (EPA)	DTXSID50194488
InChI InChI=1S/C5H9NO/c7-5-1-3-6-4-2-5/h6H,1-4H2 Y Key: VRJHQPZVIGNGMX-UHFFFAOYSA-N Y InChI=1/C5H9NO/c7-5-1-3-6-4-2-5/h6H,1-4H2 Key: VRJHQPZVIGNGMX-UHFFFAOYAC
SMILES O=C1CCNCC1
Properties
Chemical formula	C5H9NO
Molar mass	99.133 g·mol−1
Boiling point	79 °C (174 °F; 352 K)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)	1 3
Flash point	91 °C (196 °F; 364 K)
Related compounds
Related compounds	Piperidine; 2-Piperidinone
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

The N-protonated derivative is typically isolated as the hydrate (HO)₂C(CH₂)₄NH+2.^[2]

It is a List I chemical in the United States as it is a precursor to fentanyl.

Fentanyl synthesis using the Gupta method starting from 4-piperidone

It is also used in the synthesis of NLX-204 and F-15,599.

See also

• 4-Pyridone
• 1-Methyl-4-piperidone