HuagongsheHuagongshe Chemistry Print Report · For research reference only
9-hydroxy-1-oxo-1H-naphtho[2,1-b]pyran-2-carboxaldehyde acetate → 9-Hydroxy-1-oxo-1H-naphtho[2,1-b]pyran-2-carboxaldehyde
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 9-hydroxy-1-oxo-1H-naphtho[2,1-b]pyran-2-carboxaldehyde acetate | HCID 86737239 | — |
| Solvent | Formic Acid | HCID 284 | — |
| Product | 9-Hydroxy-1-oxo-1H-naphtho[2,1-b]pyran-2-carboxaldehyde | HCID 13051041 | — |
Reaction Steps
Prepared by refluxing 9-hydroxy-1-oxo-1H-naphtho[2,1-b]pyran-2-carboxaldehyde acetate (20.0 g, 0.071 m) in formic acid (250 ml, 88%) for 18 hrs. The product which crystallizes on cooling is filtered, washed with water, with acetone and sucked dry. The crystals are red-brown (16.0 g, 94%), m.p. dec>270° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04225722 |
| Source dataset | uspto-grants-1980_09 |
| ORD ID | ord-b6acbcd6754a45438040d402baf6706d |
| Source note | uspto-grants-1980_09 |