ALPHA-PYRONE

  • Name: ALPHA-PYRONE
  • CAS: 504-31-4
  • Purity: 99%
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Details

Factory Sells Best Quality ALPHA-PYRONE 504-31-4 with USP

  • Molecular Formula: C5H4O2
  • Molecular Weight: 96.0856
  • Appearance/Colour: Clear yellow to brown liquid 
  • Vapor Pressure: 0.225mmHg at 25°C 
  • Melting Point: 8-9 °C 
  • Refractive Index: n20/D 1.53(lit.)  
  • Boiling Point: 207.5 °C at 760 mmHg 
  • Flash Point: 89.2 °C 
  • PSA： 30.21000 
  • Density: 1.192 g/cm3 
  • LogP: 0.63980 

ALPHA-PYRONE(Cas 504-31-4) Usage

Synthesis Reference(s)

Journal of the American Chemical Society, 90, p. 2318, 1968 DOI: 10.1021/ja01011a020Organic Syntheses, Coll. Vol. 6, p. 462, 1988

Purification Methods

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

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.

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

504-31-4 Relevant articles

-

Guthrie et al.

, p. 237,242 (1970)

-

Preparation method of furanone

-

Paragraph 00178; 0020-0022; 0025-0027; 0030-0031, (2019/11/12)

The invention discloses a preparation me...

Preparation method of high-purity alpha-pyranone

-

Paragraph 0027-0028; 0034-0042; 0048-0055, (2019/11/21)

The invention discloses a preparation me...

A convenient synthesis of 2H-pyran-2-ones and of 3-and 5-bromo-2H-pyran-2-ones

Kotretsou, Stamatia I.,Georgiadis, Minas P.

, p. 161 - 167 (2007/10/03)

-

Method for the preparation of (+)-calanolide A and analogues thereof

-

, (2008/06/13)

A method of preparing (+)-calanolide A, ...

504-31-4 Process route

5-diazo-1,3-cyclopentadiene
1192-27-4

5-diazo-1,3-cyclopentadiene

pyran-2-one
504-31-4

pyran-2-one

cyclopentadienone
13177-38-3

cyclopentadienone

(Z)-5-Oxo-penta-2,4-dienal
39763-18-3

(Z)-5-Oxo-penta-2,4-dienal

Conditions
Conditions Yield
With oxygen; In solid matrix; at -253.2 ℃; Product distribution; Mechanism; Irradiation; further with <18o> O2;
cyclopentadienone O-oxide
88766-67-0

cyclopentadienone O-oxide

pyran-2-one
504-31-4

pyran-2-one

cyclopentadienone
13177-38-3

cyclopentadienone

(Z)-5-Oxo-penta-2,4-dienal
39763-18-3

(Z)-5-Oxo-penta-2,4-dienal

cyclopentadienone oxide
68781-88-4

cyclopentadienone oxide

Conditions
Conditions Yield
Mechanism; Irradiation;

504-31-4 Upstream products

  • 672-67-3
    672-67-3

    2H-pyran-2-one-6-carboxylic acid

  • 500-05-0
    500-05-0

    2H-pyran-2-one-5-carboxylic acid

  • 53646-72-3
    53646-72-3

    5-bromo-5,6-dihydro-2H-pyran-2-one

  • 1192-27-4
    1192-27-4

    5-diazo-1,3-cyclopentadiene

504-31-4 Downstream products

  • 1515-21-5
    1515-21-5

    3-Oxo-2-oxabicylo <2.2.2> oct-7-en-exo-5,exo-6-dicarbonsaeureanhydrid

  • 3573-76-0
    3573-76-0

    (1r,2R,3S,4r,5R,6S)-bicyclo <2.2.2> oct-2-ene-2,3,5,6-tetracarboxylic bisanhydride

  • 29739-67-1
    29739-67-1

    (Z)-penta-2,4-dienoic acid

  • 91-20-3
    91-20-3

    naphthalene

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