HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetic Acid → Dimethylmaleic anhydride
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetic Acid | HCID 176 | — |
| Reactant | Maleic Anhydride | HCID 7923 | — |
| Reactant | Sodium Acetate Trihydrate | HCID 23665404 | — |
| Catalyst | N-2-Pyridylaniline | HCID 81130 | — |
| Product | Dimethylmaleic anhydride | HCID 13010 | 44.3% |
Reaction Steps
A solution of 98.0 g (1 mol) of maleic anhydride in 200 ml of glacial acetic acid is added dropwise over 1 hour to a boiling mixture of 1.7 g (0.01 mol) of 2-phenylaminopyridine and 22.8 g of sodium acetate trihydrate in 100 ml of glacial acetic acid. The mixture is subsequently boiled under reflux for 18 hours. Working up as in Example 1 affords 27.9 g (44.3%) of dimethylmaleic anhydride with a melting point of 91°-93° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04639531 |
| Source dataset | uspto-grants-1987_01 |
| ORD ID | ord-49e60844a8f64f8d865b5f062b4a5e7f |
| Source note | uspto-grants-1987_01 |