Methyl 2,2-difluoro-2-(fluorosulfonyl)acetate
Synonym(s):Difluoro(fluorosulfonyl)acetic acid methyl ester
- CAS NO.：680-15-9
- Empirical Formula: C3H3F3O4S
- Molecular Weight: 192.11
- MDL number: MFCD00144316
- EINECS: 808-179-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 00:44:21
What is Methyl 2,2-difluoro-2-(fluorosulfonyl)acetate?
Chemical properties
clear colorless to yellow liquid
The Uses of Methyl 2,2-difluoro-2-(fluorosulfonyl)acetate
Methyl 2,2-difluoro-2-(fluorosulfonyl)acetate is a useful reagent for the trifluoromethylation of alkyl halides. It is also broadly applicable reagent for perfluoroalkylations for aryl iodides and bromides.
The Uses of Methyl 2,2-difluoro-2-(fluorosulfonyl)acetate
Efficient reagent for the trifluoromethylation of aryls and difluorocyclopropanation of alkenes.
Properties of Methyl 2,2-difluoro-2-(fluorosulfonyl)acetate
| Boiling point: | 117-118 °C(lit.) |
| Density | 1.509 g/mL at 25 °C(lit.) |
| refractive index | n |
| Flash point: | 118 °F |
| storage temp. | 2-8°C(protect from light) |
| form | liquid |
| color | colorless to yellow |
| Specific Gravity | 1.52 |
| BRN | 1812896 |
| CAS DataBase Reference | 680-15-9(CAS DataBase Reference) |
| EPA Substance Registry System | Acetic acid, 2,2-difluoro-2-(fluorosulfonyl)-, methyl ester (680-15-9) |
Safety information for Methyl 2,2-difluoro-2-(fluorosulfonyl)acetate
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05 |
| GHS Hazard Statements |
H226:Flammable liquids H314:Skin corrosion/irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Methyl 2,2-difluoro-2-(fluorosulfonyl)acetate
| InChIKey | GQJCAQADCPTHKN-UHFFFAOYSA-N |
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