HuagongsheHuagongshe Chemistry Print Report · For research reference only
Resorcinol → 2-(6-Hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Resorcinol | HCID 5054 | — |
| Reactant | Phthalic Anhydride | HCID 6811 | — |
| Reactant | Potassium bisulfate | HCID 516920 | — |
| Solvent | Methyl Benzoate | HCID 7150 | — |
| Product | 2-(6-Hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid | HCID 3383 | — |
Reaction Steps
A mixture comprising 55 g of resorcinol, 30 g of phthalic anhydride, 2 g of potassium hydrogen sulfate and 500 ml of methyl benzoate is brought to 200° C. for 6 hours. After cooling, the red crystals of crude fluorescein are washed with acetone and dried.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07994215B2 |
| Source dataset | uspto-grants-2011_08 |
| ORD ID | ord-ec6f771b44504f298a2b7fc305a27348 |
| Source note | uspto-grants-2011_08 |