2(3H)-Furanone, 5-methyl-
- Formula: C5H6O2
- Molecular weight: 98.0999
- IUPAC Standard InChIKey: QOTQFLOTGBBMEX-UHFFFAOYSA-N
- CAS Registry Number: 591-12-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: α-Angelica lactone; β,γ-Angelica lactone; δ2-Angelica lactone; 3-Pentenoic acid, 4-hydroxy-, γ-lactone; 4-Hydroxy-3-pentenoic acid γ-lactone; 5-Methylfuran-2(3H)-one; Penten-3-oic acid, 4-hydroxy-, γ-lactone; 4-Hydroxypent-3-enoic acid lactone; γ-Methyl-β,γ-crotonolactone; 5-Methyl-2(3H)-furanone; 2,3-Dihydro-5-methyl-2-furanone; 2-Oxo-5-methyl-2,3-dihydrofuran; NSC 654; Angelica lactone; 2,3-Dihydro-5-methylfuran-2-one; 5-Methyl-3H-furan-2-one; 5-Methyl-2(3H)-furanone (α-angelicalactone)
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: C5H6O2 = C5H6O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -8.5 ± 1.1 | kJ/mol | Kin | Taskinen, 1994 | liquid phase; solvent: Cyclohexane |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
IE (eV) | Method | Reference |
---|---|---|
9.62 ± 0.05 | EI | Thorstad, Undheim, et al., 1975 |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Taskinen, 1994
Taskinen, E.,
Relative thermodynamic stabilities of γ-methylene-γ-butyrolactone and α-angelicalactone,
Tetrahedron, 1994, 50, 1885-1888. [all data]
Thorstad, Undheim, et al., 1975
Thorstad, O.; Undheim, K.; Cederlund, B.; Hornfeldt, A.-B.,
Ionisation potentials in tautomeric analysis of 2-hydroxy derivatives of thiophenes, selenophenes, and furans,
Acta Chem. Scand. Ser. B:, 1975, 29, 647. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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