HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetic Anhydride → Furo(3,2-b)furan-2,5-dione, 3,6-diphenyl-
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetic Anhydride | HCID 7918 | — |
| Reactant | (alphaE)-alpha-(3-Hydroxy-5-oxo-4-phenyl-2(5H)-furanylidene)benzeneacetic acid | HCID 54682513 | — |
| Product | Furo(3,2-b)furan-2,5-dione, 3,6-diphenyl- | HCID 72617 | — |
Reaction Steps
Pulvinic acid (19.0 g., 0.0616 mol.) was refluxed in 250 ml. of acetic anhydride for 15 minutes. The cooled solution was stirred into 1200 ml. of ice and water and the oily mass was crystallized by stirring in 500 ml. of ethanol. The yellow solid was removed, washed with ethanol and dried to yield pulvinic acid lactone, m.p. 221.5°-223°.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03947580 |
| Source dataset | uspto-grants-1976_03 |
| ORD ID | ord-ffbb8fca1e534b84a2c6262d613b08f1 |
| Source note | uspto-grants-1976_03 |