3-Bromomethyliodobenzene

3-Hydroxymethylfurfural is widely used as a coating. In the field of medicine, it can be used as a key intermediate for the synthesis of many drugs. Because 3-hydroxymethylfurfural has a specific chemical structure and activity, it can be chemically modified and transformed to produce compounds with different pharmacological activities, such as some pharmaceutical ingredients with antibacterial and anti-inflammatory effects, which contribute to human health and well-being.
In the chemical industry, its position is also crucial. It is an important raw material for the preparation of high-performance materials. Through a specific chemical reaction, 3-hydroxymethylfurfural can be polymerized into a polymer. Such polymers may have excellent mechanical properties, thermal stability and other characteristics. They can play a role in the manufacture of plastics, fibers and other materials, improving material properties and quality, and meeting various industrial production needs.
In the energy field, 3-hydroxymethylfurfural has also emerged. It can be converted into biofuels or fuel additives through a series of reactions. In today's critical period of energy transition, as a potential raw material for renewable energy, it is expected to alleviate the shortage of traditional fossil energy, and the characteristics of bio-based sources make it have lower pollution emissions during combustion, which is of great significance to environmental protection.
In addition, in the food industry, although its formation or related to food processing, in some cases excessive presence or affect food quality and safety, but the rational use of some of its characteristics, or can develop new food additives, used to improve food flavor, color and other quality characteristics, for the food industry innovation and development of building blocks. In short, 3-hydroxymethyl furfural has important uses in many fields, and has a profound impact on the development of various industries.

3-Chlorobenzyl sulfone is an organic compound with special physical properties. It is white to light yellow crystalline powder with fine texture. It is quite stable at room temperature and pressure, and this stability allows it to maintain its own structure and properties during many chemical reactions and storage processes.
Its melting point is within a specific range, about [X] ° C. The melting point characteristics are of great significance when identifying and purifying the substance. By accurately measuring the melting point, its purity can be determined. If the melting point is close to the theoretical value, it indicates that the purity is quite high; if there is a large deviation from the theoretical value, it may contain impurities.
The solubility of 3-chlorobenzyl sulfone is also a key physical property. In common organic solvents such as ethanol and acetone, it has a certain solubility and can be uniformly dispersed to form a uniform solution. However, the solubility in water is very small, which is related to the large proportion of organic groups in its molecular structure, making it less hydrophilic. This difference in solubility is an important consideration when separating, purifying and preparing solutions containing this substance. For example, if you want to obtain a solution of 3-chlorobenzyl sulfone, you can choose a suitable solvent such as ethanol for dissolution according to its solubility.
In addition, 3-chlorobenzyl sulfone has a certain density. In related chemical production and experimental operations, the density data is of great significance for accurate measurement and ratio of this substance, which is related to the reaction process and product quality. Its density is approximately [X] g/cm ³, and it remains relatively stable under specific temperature and pressure conditions.

The chemical properties of 3-hydroxymethylfurfural are particularly important and are related to applications in many fields. This substance has aldehyde groups and hydroxyl groups, so it is quite active.
Its aldehyde group properties are remarkable and can participate in many typical aldehyde reactions. If it can have an active addition reaction with nucleophiles, it is common to combine with nucleophiles containing nitrogen, sulfur and other nucleophiles. This reaction is widely used in organic synthesis, and various complex organic structures can be constructed by designing specific nucleophiles. And aldehyde groups can be oxidized, and can be converted into carboxyl groups under mild conditions to form 3-hydroxymethylfurfuric acid; when encountering strong oxidizing agents, the degree of oxidation is deeper, and the molecular structure will also change greatly.
Furthermore, its hydroxyl groups also have unique chemical behaviors. Hydroxyl groups can participate in esterification reactions and interact with various organic or inorganic acids to form corresponding ester compounds. Such ester products can be used as important monomers or modifiers in the field of materials science, such as the preparation of polymer materials with special properties, endowing materials with unique physical and chemical properties. At the same time, hydroxyl groups can also undergo substitution reactions under appropriate conditions and be replaced by other functional groups, providing various pathways for the modification of molecular structures.
In addition, the conjugated structure of 3-hydroxymethylfurfural gives it certain stability and special optical properties. Due to the existence of the conjugate system, the fluidity of the intramolecular electron cloud is enhanced, which makes it absorb light of a specific wavelength, which can be explored in the field of spectral analysis. And the conjugate structure also affects its chemical activity, so that the reactivity and selectivity of the molecule as a whole show a unique law. In organic synthesis and catalytic reactions, the rational use of this conjugate effect can achieve efficient and highly selective chemical reactions.
3-hydroxymethyl furfural has shown great application potential and research value in many fields such as organic synthesis, materials science, analytical chemistry and so on due to the diverse chemical properties endowed by the aldehyde group, hydroxyl group and conjugate structure.

3-Cyanopyridine is a crucial intermediate in organic synthesis, and is widely used in many fields such as drugs, pesticides and materials. There are many synthesis methods. The following is a detailed description of ancient Chinese according to the style of "Tiangong Kaiwu".
To prepare 3-cyanopyridine, one method can be obtained by the ammoxidation reaction of 3-methylpyridine. First take an appropriate amount of 3-methylpyridine and place it in a special reactor. The kettle needs to be cast with fine iron, with a wall thickness of several points, and can withstand high temperature and pressure. Then, a mixture of ammonia and air is introduced into the kettle. The mixture of gas needs to be prepared in a precise ratio, and the ratio of ammonia to air should be three to seven. At the same time, a special catalyst is placed in the kettle. This catalyst is made of rare metals and specific oxides in a delicate way, which can speed up the reaction rate and improve the yield of the product.
Then, the reactor is slowly heated with charcoal fire, so that the temperature in the kettle gradually rises to about 500 degrees Celsius. During this period, special personnel need to take care of the heat carefully, so that the temperature is not too high or too low. If it is too high, the product will decompose easily, and if it is too low, the reaction will be slow. When the temperature stabilizes, it can be seen that the gas in the kettle is rolling and a violent reaction occurs. The methyl group of 3-methylpyridine is gradually converted into a cyano group by the action of ammonia and air, and then 3-cyanopyridine is obtained.
After the reaction is completed, the product in the kettle is poured out and liquefied by condensation. After distillation, pure 3-cyanopyridine is separated by the difference in the boiling points of different substances. When distilling, it is appropriate to use a ceramic still, which can make the distillation process more stable. Slow steam over low heat first, and when the temperature is raised to a suitable temperature, collect the fraction in a specific temperature range. This fraction is pure 3-cyanopyridine.
In addition, there is also a method of using niacin as raw material, reacting with ammonia water, and then dehydrating to obtain 3-cyanopyridine. Take an appropriate amount of niacin, place it in a porcelain container, slowly add ammonia water, and stir it while adding, so that the two are fully mixed. After a while of reaction, the mixture is moved to a special oven and baked over a charcoal fire to promote dehydration. The temperature of the oven also needs to be precisely controlled, starting with a light fire, and then gradually increasing the fire until the product is completely dehydrated to 3-cyanopyridine. Finally, impurities are removed by purification to obtain a pure product.

3-Hydroxymethylfurfural should be paid attention to during storage and transportation. It is active and easy to change when exposed to light, heat and oxygen. Therefore, when storing, the first environment should be shading, temperature control and oxygen isolation. It should be placed in a cool, dry and well-ventilated place, away from direct sunlight and high-temperature heat sources, to reduce the possibility of decomposition, polymerization or oxidation of 3-hydroxymethylfurfural. If the temperature is too high, the reaction of 3-hydroxymethylfurfural will intensify, resulting in content changes and quality damage. Humidity also needs to be controlled, and high-humidity environments or reactions such as hydrolysis will reduce its purity and stability.
Furthermore, the packaging material is of great significance. It is necessary to choose materials that have no adsorption and no reaction to 3-hydroxymethylfurfural, such as glass, specific plastics, etc., to ensure that the packaging is sealed and prevent air and moisture from invading. Plastic packaging should have good barrier properties to avoid the penetration of small molecules.
During transportation, vibration and collision or damage to the packaging, endangering 3-hydroxymethylfurfural. Therefore, it is necessary to transport stably, and the packaging should be reinforced with buffer materials to absorb the impact of shock. At the same time, the transportation time also needs to be considered. If it is too long to transport or due to environmental factors, it is easy to cause its qualitative change. An efficient route should be planned and the transportation time should be shortened.
In addition, equipment and containers in contact with 3-hydroxymethylfural must be clean before use, free of impurities and pollutants, Different batches of 3-hydroxymethylfurfural should be separated and shipped separately for traceability and management, and during operation, personnel should follow standards to ensure safety and avoid pollution and loss. In this way, the quality of 3-hydroxymethylfurfural is stable during storage and transportation.