2,6-Difluorobenzonitrile
C7H3F2N
CAS No.: 1897-52-5
Application
Preparation：
By reacting 2,6-dichlorobenzonitrile with potassium fluoride: This is the most common synthesis method. Specific steps include: mixing 2,6-dichlorobenzonitrile (DCBN) and potassium fluoride (KF) in a certain proportion in the non-polar solvent sulfolane, reacting at 170-175°C for 1-5 hours, and then React for 3-5 hours at 220°C to finally obtain 2,6-difluorobenzonitrile (DFBN), with a yield of about 90% and a purity of ≥98%
Several techniques, such as the reaction of 2,6-difluoroaniline with cyanogen bromide or the reaction of 2,6-difluorobenzoyl chloride with sodium cyanide, can be used to synthesize 2,6-Difluorobenzonitrile. A straightforward dehydrative cyclization procedure can also be used to convert 2,6-difluorobenzamide into 2,6-difluorobenzonitrile.
Physical Properties
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Melting point |
25-28 °C (lit.) |
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Boiling point |
197-198 °C |
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Assay |
≥99.5% |
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Molecular mass |
139.1 |
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Flash point |
176 °F |
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Package |
50kgs or according customer requirement |
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Packing, Storage, Handling and Transportation
3,4,5,6-Tetrafluorophthalonitrile should be sealed in dry place at room temperature.
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