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Purchase CAS:84476-99-3 | 2,5-Difluoropyridine,view related peer-reviewed papers,technical documents,similar products,MSDS & more.2,5-Difluoropyridine is a fluorinated pyridine derivative that is of interest due to its potential applications in various fields, including medicinal chemistry and materials science. The presence of fluorine atoms can significantly alter the physical and chemical properties of a molecule, making it...
2,5-Difluoropyridine is a fluorinated pyridine derivative that is of interest due to its potential applications in various fields, including medicinal chemistry and materials science. The presence of fluorine atoms can significantly alter the physical and chemical properties of a molecule, making it a valuable compound for further functionalization and synthesis of complex molecules.
The synthesis of fluorinated pyridines, such as 2,5-difluoropyridine, often involves regioselective metalation and subsequent carboxylation. Protective groups like chlorine or trimethylsilyl are used to achieve regioexhaustive substitution at each vacant position of the pyridine ring. This method allows for the derivation of several fluorinated pyridinecarboxylic acids from the starting material. Additionally, the synthesis of related compounds, such as 2,3-difluoro-5-chloropyridine, has been achieved using potassium fluoride as a fluorination agent in the presence of a phase transfer catalyst, demonstrating the versatility of fluorination reactions.
The molecular structure of fluorinated pyridines is characterized by the presence of fluorine atoms on the pyridine ring, which can influence the electronic distribution and reactivity of the molecule. For instance, the crystal structure of a related compound, the interaction product of 5-trifluoromethyl-pyridine-2-thione with iodine, shows a complex with linear anions and cationic moieties linked by hydrogen bonds, illustrating the impact of fluorine on the molecular geometry.
Fluorinated pyridines participate in various chemical reactions, which are often influenced by the presence of fluorine atoms. For example, 2-(trifluoromethylsulfonyloxy)pyridine (TFOP) has been used as a reagent for ketone synthesis from carboxylic acids and aromatic hydrocarbons, demonstrating the utility of fluorinated pyridines in facilitating acylation reactions. Moreover, the reactivity of 2,5-difluoropyridine can be exploited for the synthesis of novel electron acceptors, as seen in the formation of a charge-transfer complex with 4-(dimethylamino)pyridine.
The physical and chemical properties of 2,5-difluoropyridine are influenced by the electronegativity and small size of the fluorine atoms. These properties can lead to increased stability and reactivity in certain chemical environments. The toxicity profile of related compounds, such as 5-amino-2-(trifluoromethyl)pyridine, has been studied, revealing that these compounds can be toxic and should be handled with caution in industrial applications. The electron-withdrawing effect of fluorine also contributes to the high reduction potential of fluorinated electron acceptors, which is significant for their use in electronic applications.
2,5-Difluoropyridine is considered hazardous. It is a flammable liquid and vapor. It can cause skin irritation, serious eye irritation, and may cause respiratory irritation. Safety measures include washing face, hands, and any exposed skin thoroughly after handling, wearing protective gloves/clothing/eye protection/face protection, avoiding breathing dust/fume/gas/mist/vapors/spray, and using only outdoors or in a well-ventilated area.
Product Name: | 2,5-Difluoropyridine |
Synonyms: | 2,5-DIFLUOROPYRIDINE;2,5-difluoropyridine >99%;2,5-Difluoropyridine 99%;2,5- twofluorine pyridine;Pyridine,2,5-difluoro-;2,5-Difluoropyridine>2,5-Difluoropyridine ISO 9001:2015 REACH |
CAS: | 84476-99-3 |
MF: | C5H3F2N |
MW: | 115.08 |
EINECS: | |
Product Categories: | Fluorine series;Pyridines;Pyridine |
Mol File: | 84476-99-3.mol |
2,5-Difluoropyridine Chemical Properties |
Melting point | -33°C(lit.) |
Boiling point | 115°C(lit.) |
density | 1.274 g/mL at 25 °C |
refractive index | 1.4440 |
Fp | 24℃ |
storage temp. | Inert atmosphere,2-8°C |
pka | -2.85±0.10(Predicted) |
form | clear liquid |
color | Colorless to Light yellow |
InChIKey | XFAMUOYNXFXQTC-UHFFFAOYSA-N |
CAS DataBase Reference | 84476-99-3(CAS DataBase Reference) |