HuagongsheHuagongshe Chemistry Print Report · For research reference only
4-Chlorophthalic anhydride → 1,3-Isobenzofurandione, 5-fluoro-
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 4-Chlorophthalic anhydride | HCID 67044 | — |
| Reactant | Potassium Fluoride | HCID 522689 | — |
| Product | 1,3-Isobenzofurandione, 5-fluoro- | HCID 67572 | 52% |
Reaction Steps
According to Example 8 of U.S. Pat. No. 2,891,074, heating 4-chlorophthalic anhydride with a large excess of potassium fluoride in an autoclave for 24 hours at 200° C. gives 4-fluorophthalic anhydride in a yield of 52%.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04514572 |
| Source dataset | uspto-grants-1985_04 |
| ORD ID | ord-db83b5e0827e4d4ba162d5dd4f2bbca1 |
| Source note | uspto-grants-1985_04 |