HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetic Anhydride → Furo[3,4-b]quinoline-1,3-dione
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetic Anhydride | HCID 7918 | — |
| Reactant | 2,3-Quinolinedicarboxylic acid | HCID 69508 | — |
| Product | Furo[3,4-b]quinoline-1,3-dione | HCID 4325463 | — |
Reaction Steps
Following isolation, the formula (VIII) quinoline-2,3-dicarboxylic acid is heated to about 70° to 95° C. with an excess of acetic anhydride to yield the formula (IV) 2,3-quinolinedicarboxylic acid anhydride, having the structure: ##STR9## wherein L, M, Q and R7 are as described above. A cosolvent such as pyridine or pyridine-dimethoxyethane may also be used in this reaction, but is not essential to obtain the desired product.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04843162 |
| Source dataset | uspto-grants-1989_06 |
| ORD ID | ord-f1f685be8e8c45ec86fd44613f1a5491 |
| Source note | uspto-grants-1989_06 |