ALPHA-PYRONE Chemical Properties

Melting point:

8-9 °C

Boiling point:

102-103 °C20 mm Hg(lit.)

Density 

1.197 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.53(lit.)

Flash point:

94 °C

storage temp. 

2-8°C

form 

Liquid

color 

Clear yellow to brown

Odor

Pleasant hay-like, herbaceous-warm odor

BRN 

1511

InChI

InChI=1S/C5H4O2/c6-5-3-1-2-4-7-5/h1-4H

InChIKey

ZPSJGADGUYYRKE-UHFFFAOYSA-N

SMILES

C1(=O)OC=CC=C1

LogP

-0.645 (est)

Safety Information

Safety Statements 

23-24/25

WGK Germany 

3

F 

8-9-23

HS Code 

29322090

Storage Class

10 - Combustible liquids

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

ALPHA-PYRONE Usage And Synthesis

Chemical Properties

clear yellow to brown liquid.
Polymerizes easily upon standing, particularly under alkaline conditions. Very slightly soluble in water, soluble in alcohol and oils.

Uses

2H-Pyran-2-one (a-Pyrone) is a heterocyclic building block. Photochemistry of 2H-pyran-2-one has been investigated by laser flash photolysis with infrared detection. Ketene and a bicyclic lactone were obtained as major photoproducts.

Definition

ChEBI: 2H-pyran-2-one is the simplest member of the class of 2-pyranones that is 2H-pyran with an oxo substituent at position 2.

Synthesis Reference(s)

Journal of the American Chemical Society, 90, p. 2318, 1968 DOI: 10.1021/ja01011a020
Organic Syntheses, Coll. Vol. 6, p. 462, 1988

General Description

2H-Pyran-2-one (a-Pyrone) is a heterocyclic building block. Photochemistry of 2H-pyran-2-one has been investigated by laser flash photolysis with infrared detection. Ketene and a bicyclic lactone were obtained as major photoproducts.

Purification Methods

Dissolve -pyrone in Et2O, wash it with brine, dry (Na2SO4), f

ALPHA-PYRONE(504-31-4)Related Product Information

• 3-CARBOMETHOXY-2-PYRONE
• 4-Methoxy-6-methyl-2H-pyran-2-one
• Methyl isodehydroacetate
• ISODEHYDROACETIC ACID
• 2,4-Dimethyl-alpha-pyrone,4,6-DIMETHYL-ALPHA-PYRONE
• 4,6-DIPHENYL-2-PYRONE
• 4-Hydroxy-6-methyl-2-pyrone
• Cinobufotalin
• 6-AMYL-ALPHA-PYRONE 96+%,6-N-Amyl alpha-pyrone,6-pentyl-alpha-pyrone,alpha-Pyrone, 6-pentyl,6-AMYL-ALPHA-PYRONE
• Methyl coumalate
• Bufalin
• ALPHA-PYRONE
• ALPHA-PYRONE-5-CARBOXYLIC ACID,alpha-Pyrone-3-carboxylic acid
• 5-Carbethoxy-4,6-dimethyl-2-pyrone
• Sodium dehydroacetate
• 4-methoxy-6-(beta-(p-anisyl)vinyl)-alpha-pyron
• 5-NITRO-4-CHROMANONE
• 5-Decanolide