3,5-Dibromo-2-Methoxypyridine

3,2,5-Dibromo-2-methoxyacetophenone, which has a wide range of uses. In the field of pharmaceutical synthesis, it is often used as a key intermediate. In the preparation process of many drugs, it can participate in the reaction to build specific chemical structures, such as some compounds with unique physiological activities. By cleverly reacting with other reagents, it can precisely synthesize target drug molecules and provide important starting materials for the development of new drugs.
In the field of organic synthesis chemistry, due to the special functional groups in its structure, it can trigger a variety of chemical reactions, such as nucleophilic substitution, electrophilic addition, etc. Chemists use it to construct complex organic molecular structures, synthesize organic materials with special properties or structures, and expand the variety and application of organic compounds.
In the field of materials science, some of the organic materials it participates in the synthesis may have special optical and electrical properties. In the fields of optoelectronic devices, such as organic Light Emitting Diodes (OLEDs), solar cells, etc., it is expected to be used as functional materials, improve device performance and efficiency, and contribute to material innovation and optimization.

The synthesis method of 3% 2C5-dibromo-2-methoxyacetophenone, although not explicitly stated in the classic "Tiangong Kaiwu", can be deduced according to ancient and modern chemical methods.
First, acetophenone is used as the starting material and methoxylated to obtain 2-methoxyacetophenone. In a suitable organic solvent, such as N, N-dimethylformamide, a base such as potassium carbonate is added to react acetophenone with dimethyl sulfate. The base grabs the alpha-hydrogen of acetophenone to form a carbon negative ion. The carbon negative ion nucleophilic attacks the methyl group of dimethyl sulfate, and then forms 2-methoxyacetophenone. Next, brominate 2-methoxyacetophenone to obtain the target product. Add bromine to glacial acetic acid and other solvents, and use iron powder or iron tribromide as a catalyst. Bromine interacts with the catalyst to generate an active positive bromine ion, which attacks the benzene ring of 2-methoxyacetophenone, and undergoes electrophilic substitution at the 3,5 positions. The edge methoxy group is an ortho-para-site group, and the steric hindrance makes bromine easier to replace the 3,5 positions, resulting in 3,5-dibromo-2-methoxyacetophenone.
There may also be other methods. First, benzene is used as raw material, through Fu-g acylation, acetyl chloride and benzene, catalyzed by anhydrous aluminum trichloride, to obtain acetophenone. This is a classic aromatic ketone synthesis method. The subsequent steps are the same as before, that is, methoxylation first, then bromination.
Or starting from 2-hydroxyacetophenone, methylation protects phenolic hydroxyl groups to obtain 2-methoxyacetophenone, and then brominates. Methylation can be reacted with iodomethane and potassium carbonate in a suitable solvent. Bromination is operated according to the pre-method. All these methods are based on the reaction mechanism of chemistry, and are used according to the trade-off between the availability of raw materials, the difficulty of reaction conditions, and the high and low yield.

I have not heard of "3% 2C5-dibromo-2-methoxyacetophenone" in the market, so it is difficult to know its price. However, if you want to know its market price, you should follow various channels.
First, you can go to the market of chemical reagents and ask the merchants. The merchants may vary in price depending on the source, quality and quantity of the goods. Second, on the online chemical trading platform, search and observe. On the platform, the merchants list the goods, the prices may be different, and there are promotions from time to time, and the prices fluctuate. Third, visit chemical research institutions and colleges, they may often buy this thing, and know its approximate price, you can ask the teachers, friends and deacons there.
But such chemical things may involve danger and control, and their trading and use should be in accordance with laws and regulations, and should not be done arbitrarily. Although I do not know the price, I may get the approximate market price by following these methods.

3% 2C5-dibromo-2-methoxyacetophenone is an important compound commonly used in organic synthesis. Its physical and chemical properties are unique, and the investigation of its characteristics is crucial in the field of organic chemistry.
Looking at its physical properties, this compound is usually in a solid state with a specific melting point and boiling point. Determination of the melting point can help determine its purity and crystal structure. Generally speaking, pure 3% 2C5-dibromo-2-methoxyacetophenone has a fixed melting point. If it contains impurities, the melting point may decrease and the melting range may widen. The boiling point is also a key physical constant, reflecting the temperature at which it changes from liquid to gaseous state under a specific pressure. This property is of great significance in the separation and purification process.
Discussing chemical properties, the presence of bromine atoms and methoxy groups in this compound endows it with rich chemical reactivity. Bromine atoms have strong nucleophilic substitution activity and can react with many nucleophilic reagents, such as nucleophilic reagents such as alcohols and amines, to generate corresponding substitution products. This property is widely used in the construction of new carbon-heteroatomic bonds, which is crucial in drug synthesis and the preparation of functional materials. Methoxy groups, as power supply subgroups, can affect the electron cloud density of the phenyl ring, making the ortho and para-sites of the phenyl ring more prone to electrophilic substitution reactions. For example, it can be alkylated with halogenated hydrocarbons under appropriate conditions, introducing new substituents to expand the diversity of molecular structures. In addition, carbonyl is also an important reaction check point, which can undergo reactions such as nucleophilic addition and reduction, further enriching its chemical reaction pathways.
3% 2C5 -dibromo-2 -methoxyacetophenone has unique and diverse physicochemical properties, which lay a solid foundation for its wide application in organic synthesis and related fields.

3% 2C5-dibromo-2-methoxyacetophenone is an organic compound. During storage and transportation, the following things should be paid attention to:
First, when storing, look for a cool, dry and well-ventilated place. This substance may deteriorate due to heat and humidity, causing quality damage. It is advisable to keep away from fire and heat sources, and avoid direct sunlight. As "Tiangong Kaiwu" says, "Hide in the shade and avoid the sun", emphasizing the key to the preservation of items in a suitable environment.
Second, because it may be toxic and corrosive, it must be stored separately from oxidants, acids, bases, etc., and must not be mixed. Just like the ancients, different types of objects must be separated to prevent their interaction and accidents. When operating, it is also necessary to ensure that the place has good ventilation conditions. Operators should wear appropriate protective equipment, such as protective clothing, gloves and goggles, to prevent contact injuries.
Third, during transportation, it is necessary to properly pack in accordance with relevant regulations. Packaging materials should be able to effectively prevent leakage and ensure safety during transportation. Just like the ancients transported fragile treasures, they must be carefully wrapped and properly placed. Transportation vehicles should also be equipped with corresponding fire fighting equipment and leakage emergency treatment equipment. If there is an accident on the way, they can be responded to in time. The transportation process should be carried according to the established route, away from densely populated areas and important places.
Fourth, whether it is storage or transportation, it must be clearly marked, indicating its characteristics, hazards and emergency treatment methods. In this way, relevant personnel will know its nature at a glance, and in case of emergencies, follow the signs to take prompt and correct measures to reduce hazards.