4,4'-DIFLUOROBENZIL
- CAS NO.：579-39-5
- Empirical Formula: C14H8F2O2
- Molecular Weight: 246.21
- MDL number: MFCD00134541
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 02:26:11
What is 4,4'-DIFLUOROBENZIL?
Chemical properties
pale yellow powder
The Uses of 4,4'-DIFLUOROBENZIL
4,4′-Difluorobenzil is suitable for use in the preparation of 2,3-bis(4-fluorophenyl)thieno[3,4-b]pyrazine. It may be used in the synthesis of following:
- poly(ether-α-diketone)s, via nucleophilic substitution reaction with bisphenol A
- 4,4′-difluoro-2,3-diphenylpyrazine (DPPF) and 4,4′-difluoro-5-methyl 2,3-diphenylpyrazine (MDPPF), via direct condensation with ethylenediamine and 1,2-diaminopropane, respectively
- 2,3-bis(4-fluorophenyl)quinoxaline, via direct condensation with 1,2-phenylenediamine
Synthesis Reference(s)
Tetrahedron Letters, 35, p. 2959, 1994 DOI: 10.1016/S0040-4039(00)76671-8
General Description
4,4′-Difluorobenzil is a benzil derivative. Its reaction with benzylurea and phenethylurea has been investigated. It is reported to undergo condensation with Fe2(SH)2(CO)6 to afford the adduct Fe2[S2C2(OH)2(C6H4-4-F)2](CO)6.
Properties of 4,4'-DIFLUOROBENZIL
| Melting point: | 120-122 °C (lit.) |
| Boiling point: | 370.2±27.0 °C(Predicted) |
| Density | 1.3163 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| form | powder to crystal |
| color | Light orange to Yellow to Green |
| Water Solubility | Soluble in water. |
| BRN | 1971736 |
| CAS DataBase Reference | 579-39-5(CAS DataBase Reference) |
| EPA Substance Registry System | Ethanedione, bis(4-fluorophenyl)- (579-39-5) |
Safety information for 4,4'-DIFLUOROBENZIL
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for 4,4'-DIFLUOROBENZIL
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