HuagongsheHuagongshe Chemistry Print Report · For research reference only
Phosphoric Acid → Maltol
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Phosphoric Acid | HCID 1004 | — |
| Reactant | 4-Bromo-6-hydroxy-2-methyl-2H-pyran-3(6H)-one | HCID 20468598 | — |
| Product | Maltol | HCID 8369 | 34% |
Reaction Steps
A solution of 4-bromo-6-hydroxy-2-methyl-2H-pyran-3(6H)-one (0.0025 mole) in 20 ml of 35% phosphoric acid was refluxed for about 5 hours. Maltol (34%) was isolated by the method of Example 1.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04289704 |
| Source dataset | uspto-grants-1981_09 |
| ORD ID | ord-b67467247a1b4f4a82350947408ca5f3 |
| Source note | uspto-grants-1981_09 |