HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → 4H-1-Benzopyran-4-one, 5,7-dihydroxy-2-methyl-
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | HCID 13632741 | HCID 13632741 | — |
| Solvent | Sodium Carbonate | HCID 10340 | — |
| Product | 4H-1-Benzopyran-4-one, 5,7-dihydroxy-2-methyl- | HCID 5375252 | — |
Reaction Steps
5,7-Diacetoxy-3-acetyl-2-methylchromen-4-one is refluxed for 1 hour with 40 ml of 10% sodium carbonate solution. After cooling, the suspension is adjusted to a pH of about 6 using 2N HCl and cooled. The precipitate is filtered off, giving 0.6 g of very pale brown powder (TM=279.9° C.)
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US09044409B2 |
| Source dataset | uspto-grants-2015_06 |
| ORD ID | ord-2716593bf189409da9964b77bc278336 |
| Source note | uspto-grants-2015_06 |