Other grades of this product :
| 4,5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one Basic information |
| 4,5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one Chemical Properties |
| Hazard Codes | Xn | | Risk Statements | 20/22 | | Safety Statements | 36 | | WGK Germany | 3 | | HS Code | 29329990 |
| 4,5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one Usage And Synthesis |
| Chemical Properties | clear yellow liquid | | Chemical Properties | 3-Hydroxy-4,5-dimethyl-2(5H)-furanone was found in, for example, fenugreek, coffee, sake, and florsherry.
Its aroma characteristic changes from caramel-like at low concentrations
to curry-like at high concentrations. A method described for its preparation comprises
condensation of ethyl propionate with diethyl oxalate and reaction of the intermediately formed diethyl oxalylpropionate with acetaldehyde. Acidic decarboxylation
of the ethyl 4,5-dimethyl-2,3-dioxodihydrofuran-4-carboxylate gives
the title compound. | | Occurrence | Reported found in roasted Virginia tobacco, beef broth, beer, sherry, botryized wine, coffee, tea, fenugreek,
sake and rice wine.
| | Aroma threshold values | Aroma characteristics at 1.0%; sweet, strong brown, cyclotene and maple like, caramel, toffee, maltol-like
and burnt, brown sugar fenugreek-like, cooked and syrupy. | | Taste threshold values | Taste characteristics at 5–25 ppm; sweet, caramel, maple, walnut, brown sugar, nutty, cotton candy, fenugreek and celery-like, rum, roasted meaty with a honey nuance |
| 4,5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one Preparation Products And Raw materials |
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