HuagongsheHuagongshe Chemistry Print Report · For research reference only
4-Aminophthalic acid → 4-(Dimethylmaleinimidyl)-phthalic anhydride
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 4-Aminophthalic acid | HCID 72912 | — |
| Reactant | 3-Aminophthalic acid | HCID 79490 | — |
| Reactant | Disodium | HCID 141233 | — |
| Product | 4-(Dimethylmaleinimidyl)-phthalic anhydride | HCID 54030521 | — |
Reaction Steps
If instead of 22.5 g of the disodium salt of 3-aminophthalic acid, an equivalent amount of the disodium salt of 4-aminophthalic acid is employed and in other respects the procedure indicated in the above example is followed, 4-(dimethylmaleinimidyl)-phthalic anhydride of melting point 197°C is obtained.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03979393 |
| Source dataset | uspto-grants-1976_09 |
| ORD ID | ord-495f6a2b1a0848ac9a72be3ac71f4323 |
| Source note | uspto-grants-1976_09 |