Molecular Formula | C7H3BrF2O2 |
Molar Mass | 237 |
Density | 1.872±0.06 g/cm3(Predicted) |
Melting Point | 201-203°C |
Boling Point | 271.7±40.0 °C(Predicted) |
Solubility | soluble in Methanol |
Vapor Presure | 0-1.1Pa at 25-78℃ |
Appearance | Solid |
Color | White to Light yellow to Light orange |
pKa | 2.11±0.10(Predicted) |
Storage Condition | Sealed in dry,Room Temperature |
MDL | MFCD03094085 |
Risk Codes | R22 - Harmful if swallowed R36/37/38 - 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. S37 - Wear suitable gloves. |
WGK Germany | 3 |
HS Code | 29163100 |
Hazard Class | IRRITANT |
LogP | 2.5 at 25℃ |
introduction | 4-bromo -2, 6-difluorobenzoic acid looks white or off-white solid powder at normal temperature and pressure, and is soluble in common Organic solvents, such as dimethyl sulfoxide, N,N-dimethylformamide, dichloromethane, ethyl acetate, methanol, ethanol and other alcohol solvents, but their solubility in water is poor. It can be used as an intermediate in organic synthesis. |
use | 4-bromo-2, 6-difluorobenzoic acid is an increasingly versatile intermediate, and it is commonly used to synthesize liquid crystal compounds, pharmaceutical compounds and intermediates of pesticide compounds. |
Synthesis method | For the synthesis of 4-bromo -2, 6-difluorobenzoic acid, the conventional synthesis method is from 1-Bromo -3, 5-Difluorobenzene starts, removes the hydrogen on the benzene ring through n-butyl lithium to obtain organolithium reagent, and then reacts with external carbon dioxide to obtain the target product. Interestingly, in this reaction, the bromine atomic energy on the benzene ring is retained without being removed by butyl lithium. The possible reason is that the phenyl lithium reagent obtained by hydrogen extraction is stable under the action of the electron withdrawing of two fluorine and para bromine. Higher. |