HuagongsheHuagongshe Chemistry Print Report · For research reference only
Fluorosulfuric acid → Difluoromalonyl fluoride
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Fluorosulfuric acid | HCID 24603 | — |
| Reactant | Methyl 2,2,3-trifluoro-3-oxopropanoate | HCID 93396 | — |
| Product | Difluoromalonyl fluoride | HCID 2774099 | 66% |
Reaction Steps
A mixture of 84 g (0.54 mol) of methyl difluorofluoroformylacetate, 104 g (1.0 mol) of fluorosulfonic acid and 9 g (0.038 mol) of HSbF6 was heated at 100° to 115° for 20 h. Then, 25.6 g of volatile product, collected through a condenser in a -80° trap, and boiling in the range of -25° to +10°, was identified by IR as difluoromalonyl fluoride (66% yield) based on the stoichiometry 2 FOCCF2CO2CH3 :CF2 (COF)2. Dimethyl difluoromalonate was also formed.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04316986 |
| Source dataset | uspto-grants-1982_02 |
| ORD ID | ord-df175e990a3e46a0aac702a46a1a72a1 |
| Source note | uspto-grants-1982_02 |