HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetic Anhydride → Oxacycloundecane-2,11-dione
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetic Anhydride | HCID 7918 | — |
| Reactant | Tetrahydrofuran | HCID 8028 | — |
| Reactant | Bis(trifluoroethyl)carbamodithioic acid | HCID 147094 | — |
| Product | Oxacycloundecane-2,11-dione | HCID 75712 | — |
Reaction Steps
BTCA was reacted with two equivalents of methoxy PEG amine in refluxing THF for 5 hours to yield dimethoxy-PEG tetracarboxybenzoate, with two remaining carboxylic groups. The PEG-dimer was reacted with acetic anhydride and then with sebacic anhydride to form the tetra-armed diblock PEG2 -benzene-PSA2.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06007845 |
| Source dataset | uspto-grants-1999_12 |
| ORD ID | ord-da01a81937dc455396f0d4172d85c54f |
| Source note | uspto-grants-1999_12 |