HuagongsheHuagongshe Chemistry Print Report · For research reference only
Sulfuric Acid → 2-Methylchromone
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | Benzoylacetone | HCID 7166 | — |
| Solvent | Water | HCID 962 | — |
| Product | 2-Methylchromone | HCID 252690 | 74% |
Reaction Steps
Concentrated sulphuric acid (30 g) is added to acetyl acetophenone (15 g) obtained as above described. After cooling at room temperature, water is added until precipitation of a white powder, which is isolated by filtration under vacuum and washed with cold water. 2-methyl-4H-1-benzopyran-4-one (10 g) is obtained (m.p.=71° C.; yield=74%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06455578B1 |
| Source dataset | uspto-grants-2002_09 |
| ORD ID | ord-d52e18c19c6645ee8409ed28a72c7be2 |
| Source note | uspto-grants-2002_09 |