2-Cumaranone

2-Cumaranone is a bicyclic heteroaromatic compound in which a six-membered benzene ring is annulated with a five-membered γ-butyrolactone ring. The 2(3H)-benzofuranone can also be considered as a lactone of (2-hydroxyphenyl)acetic acid. The benzofuranone basic structure is the basis of some natural products – such as rosmadial, which is isolatable from rosemary oil, and some substances with high pharmacological activity, such as griseofulvin and rifampicin. Furthermore, 2-cumaranone is utilized as a starting material for the preparation of chemiluminescent and fluorescent dyes, for synthetic pharmaceutical agents, like the antiarrhythmic drug dronedarone, and especially for the fungicide azoxystrobin.

2-Cumaranone
Names
IUPAC name
3H-1-benzofuran-2-one
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.008.230
EC Number
  • 209-052-0
PubChem CID
UNII
  • InChI=1S/C8H6O2/c9-8-5-6-3-1-2-4-7(6)10-8/h1-4H,5H2
    Key: ACZGCWSMSTYWDQ-UHFFFAOYSA-N
SMILES
  • C1C2=CC=CC=C2OC1=O
Properties
C8H6O2
Melting point 49–51 °C
Hazards
GHS labelling:
Warning
H315, H317, H319
P261, P264, P264+P265, P272, P280, P302+P352, P305+P351+P338, P321, P332+P317, P333+P317, P337+P317, P362+P364, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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