Name | 2-Nitro-4-Fluoro Benzoic Acid |
Synonyms | RARECHEM AL BO 1973 Afatinib Impurity 98 4-fluoro-2-nitrobenzoate 4-Fluor-2-nitrobenzoesure 2-Nitro-4-Fluoroluere acid 2-NITRO-4-FLUOROBENZOIC ACID 4-FLUORO-2-NITROBENZOIC ACID 4-Fluoro-2-nitrobenzotc acid 2-Nitro-4-Fluoro Benzoic Acid 2 4-Fluoro-2-Nitrobenzoic Acid 4-Fluoro-2-Nitrobenzoic Acid 2-Nitro-4-Fluorobenzoic Acid |
CAS | 394-01-4 |
EINECS | 206-890-9 |
InChI | InChI=1/C7H4FNO4/c8-4-1-2-5(7(10)11)6(3-4)9(12)13/h1-3H,(H,10,11) |
Molecular Formula | C7H4FNO4 |
Molar Mass | 185.11 |
Density | 1.568±0.06 g/cm3(Predicted) |
Melting Point | 140-145 °C (lit.) |
Boling Point | 343.8±27.0 °C(Predicted) |
Flash Point | 161.7°C |
Solubility | soluble in Methanol |
Vapor Presure | 2.63E-05mmHg at 25°C |
Appearance | Yellow crystalline powder |
Color | White to Light yellow |
pKa | 2.14±0.25(Predicted) |
Storage Condition | Sealed in dry,Room Temperature |
Refractive Index | 1.588 |
MDL | MFCD00024300 |
Hazard Symbols | Xi - Irritant |
Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S37 - Wear suitable gloves. |
WGK Germany | 3 |
HS Code | 29163990 |
Hazard Class | IRRITANT |
introduction | 4-fluoro-2-nitrobenzoic acid has a melting point of 140 to 145 degrees, a density of 1.6, and a white to light yellow crystal solid powder under normal temperature and pressure, which can be used as an intermediate in organic synthesis. |
Uses | 4-fluoro-2-nitrobenzoic acid is a common organic synthesis intermediate. The carboxyl group in the structure can be converted into common active functional groups, for example, it becomes hydroxyl under the reduction of borane, but the nitro group on the benzene ring is not affected. There are also related literature reports that this carboxyl group can be converted into halogen atoms including chlorine, bromine, and iodine under certain conditions. The carboxyl group can also remove the carboxyl group at high temperature under the action of copper salt to form a molecule of carbon dioxide. |
Synthesis method | For the synthesis of 4-fluoro-2-nitrobenzoic acid, the conventional synthesis method is from 4-fluoro-2-Nitrotoluene starts and oxidizes methyl to carboxyl groups under the action of an appropriate oxidant, but it should be noted that acidification treatment is required after the reaction is over, adjust the reaction system to acidic. |