Name |
4-Fluorobenzoic acid |
Other name |
p-Fluorobenzoic acid; para-fluorobenzoic acid |
CAS |
456-22-4 |
EINECS |
207-259-0 |
Molecular formula |
C7H5FO2 |
Molecular weight |
140.11 |
Melting point |
184-184℃ |
Purity |
99%min. |
Applications |
organic intermediate |
4-Fluorobenzoic acid is commercially available. It may be prepared via the Schiemann reaction, in which a 4-aminobenzoic acid, protected as the ethyl ester, is diazotised and then fluoride introduced using tetrafluoroborate. Hydrolysis of the ester converts it back to the free acid.
4-Fluorobenzoic acid has been observed to form by the aerobic biotransformation of 4-fluorocinnamic acid. 2-Fluorobenzoic acid CAS:445-29-4 3-Fluorobenzoic acid CAS:455-38-9 |
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