2-Furanone
2-Furanone
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2-Furanone

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1717788

2-Furanone

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2-Furanone

2-Furanone is a heterocyclic organic compound. It is also known as γ-crotonolactone (GCL), as it is formally the lactone derived from γ-hydroxyisocrotonic acid. The chemical is colloquially called "butenolide", and is the parent structure for the butenolide class of compounds. It is a colourless liquid.

2-Furanone is prepared by oxidation of furfural:

It exists in equilibrium with the tautomer 2-hydroxyfuran, which serves as an intermediate in the interconversion between the β- and α-furanones.[further explanation needed] The β form is the more stable. The interconversion is catalyzed by base.

2-Furanones can be converted to furans by a two-step process of reduction followed by dehydration.

Furanone is thought to contribute to the unique taste of Maple syrup.

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