HuagongsheHuagongshe Chemistry Print Report · For research reference only
Sulfuric Acid → HCID 21559732, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | HCID 21559723 | HCID 21559723 | — |
| Solvent | Water | HCID 962 | — |
| Product | HCID 21559732 | HCID 21559732 | — |
Reaction Steps
A mixture of 3 g of 7-hydroxy-4-oxo-2-(trifluoromethyl)-4H-1-benzopyran-3-carbonitrile, 4 ml of conc. sulfuric acid and 1 ml of water was heated for 11/2 hours at an internal temperature of 120°-135°C. The clear dark solution was poured onto ice. The solid was filtered and recrystallized from methanol, mp > 310° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03937837 |
| Source dataset | uspto-grants-1976_02 |
| ORD ID | ord-39069e00847445feaa8208764108ab74 |
| Source note | uspto-grants-1976_02 |