HuagongsheHuagongshe Chemistry Print Report · For research reference only
4,5-Dichlorophthalic acid → 4,5-Dichlorophthalic anhydride
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 4,5-Dichlorophthalic acid | HCID 92600 | — |
| Solvent | Acetic Anhydride | HCID 7918 | — |
| Product | 4,5-Dichlorophthalic anhydride | HCID 70334 | — |
Reaction Steps
A mixture of commercially available 4,5-dichlorophthalic acid (50.4 g) and acetic anhydride (150 ml) was refluxed for 2 hours. Upon cooling the precipitate product was collected and dried in vacuum (37.0 g; m.p. 180°-181° C.).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04939140 |
| Source dataset | uspto-grants-1990_07 |
| ORD ID | ord-3097dd1cbf8843a896329b617d4c307c |
| Source note | uspto-grants-1990_07 |