4-[(2-Hydroxynaphthalen-1-Yl)Hydrazono]-7-Nitro-3-Oxo-3,4-Dihydronaphthalene-1-Sulfonate

4- [ (2-Hydroxynaphthalene-1-yl) hydrazone] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate This compound has important applications in many fields such as medicine and chemical industry.
In the field of medicine, it may interact with molecules in organisms by virtue of specific chemical structures. The functional groups contained in this compound, such as hydroxyl groups, nitro groups, and sulfonates, can be combined with biological macromolecules such as proteins, nucleic acids, etc. in the form of hydrogen bonds, ionic bonds, etc. For example, in the exploration of drug development, it can be used as a lead compound to create new drugs with specific pharmacological activities after structural modification and optimization, which can be used for targeted treatment of certain diseases.
In the chemical field, it can be used as a functional dye. Due to the presence of a conjugated system in the structure, which makes it appear a specific color, and the sulfonate group gives it a certain water solubility, it can be used in the textile, printing and dyeing industry for fabric dyeing. With its good stability and dyeing properties, it can dye bright and long-lasting fabrics. At the same time, in the field of organic synthetic chemistry, this compound may serve as a key intermediate, with the help of its rich functional groups, through a series of organic reactions, more complex and diverse organic compounds are derived, which contribute to the development of organic synthetic chemistry.

The physical properties of 4 - [ (2-hydroxynaphthalene-1-yl) hydrazido] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate are particularly important, which is related to its application in many fields.
First of all, its appearance is often in the shape of a fine powder, with a color ranging from light yellow to light brown. It is delicate in appearance, like a naturally formed dust gathered in one place. This powder appearance makes it easy to disperse, and it can be distributed more evenly in many reaction systems, which is conducive to the full progress of the reaction.
times and solubility, in polar solvents such as water, it exhibits a certain solubility. However, the solubility is not infinite, and under specific temperature and concentration conditions, a stable solution can be formed. In non-polar solvents, such as alkanes, the solubility is very small, almost insoluble. The characteristics of this solubility are actually determined by its molecular structure. There are both hydrophilic sulfonic acid groups and hydrophobic naphthalene ring structures in the molecule. The two check and balance each other, resulting in very different solubility in different solvents.
Furthermore, when it comes to the melting point, after precise determination, its melting point is within a certain range. The exact value of the melting point is one of the important basis for the identification of this substance, and in the process of purification and preparation, the monitoring of the melting point is crucial. When the temperature gradually rises to the melting point, the substance will gradually change from a solid state to a liquid state. This phase transition process not only reflects the change of its own structure, but also has a profound impact on its subsequent processing and application.
In addition, its density is also a significant physical property. Although the value is not widely known, in specific chemical and material application scenarios, the consideration of density is indispensable. Appropriate density helps the ratio and mixing of materials to ensure that the performance of the final product meets the standard.
As for stability, under normal temperature and pressure and dry environment, 4- [ (2-hydroxynaphthalene-1-yl) hydrazinido] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate is relatively stable and can be stored for a long time without significant chemical changes. However, if placed in a harsh environment with high temperature, high humidity or strong light exposure, its structure may change, which may affect its performance and quality.
In summary, the physical properties of 4- [ (2-hydroxynaphthalene-1-yl) hydrazinido] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate are diverse and complex, and the properties are interrelated, which together determine their application potential and applicable scenarios in different fields.

To prepare 4- [ (2-hydroxynaphthalene-1-yl) hydrazine fork] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate, the method is as follows:
First take an appropriate amount of 2-hydroxynaphthalene-1-formaldehyde and place it in a clean reaction vessel. Another amount of 7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate hydrazine is slowly added to the above container containing 2-hydroxynaphthalene-1-formaldehyde. In this process, it is necessary to pay attention to control the reaction temperature, and maintain a warm water bath in a moderate range, between about 30 and 40 degrees Celsius. And the reaction environment must be kept weakly acidic, and a little dilute acid solution can be added dropwise to adjust it.
After mixing the two, continue to stir to make a full reaction. As the reaction advances, it can be seen that the solution gradually changes. After a few hours, the reaction tends to be complete. At this time, the reaction product is extracted with an appropriate organic solvent, such as ethanol and acetone. After extraction, the organic phase is separated, and the organic solvent is removed by vacuum distillation, and then the crude product is obtained.
The crude product needs to be refined. The method of recrystallization can be used, and a suitable solvent can be selected, such as a mixed solvent of ethyl acetate and petroleum ether, and the ratio can be prepared according to the specific situation. The crude product is dissolved in this mixed solvent, heated until completely dissolved, and then slowly cooled to allow the crystals to precipitate naturally. When the crystals are completely precipitated, the crystals are separated by suction filtration, and washed with a small amount of cold solvent to remove impurities. Finally, the crystals are placed in a dryer to dry to obtain a pure 4- [ (2-hydroxynaphthalene-1-yl) hydrazine fork] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate product. The entire preparation process requires careful operation and attention to the control of conditions in each link in order to achieve satisfactory results.

This compound is named 4- [ (2-hydroxynaphthalene-1-yl) hydrazone] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate. Its chemical stability is closely related to the characteristics of each group in the molecular structure.
Looking at its structure, it contains hydroxyl naphthalene groups, and the hydroxyl groups have active hydrogen, which is easy to participate in the formation of hydrogen bonds. In some environments, or in hydrogen bonds with surrounding molecules, it affects its own stability. When the environment contains substances that can react with hydroxyl groups, such as acids and bases, hydroxyl groups may participate in the reaction, changing the molecular structure and reducing stability.
The hydrazone structure part has certain chemical activity due to the double bond of carbon and nitrogen (C = N). In case of nucleophilic reagents, the double bond may be attacked, triggering a reaction, resulting in changes in molecular structure and damage to stability. The introduction of
7 -nitro group, the nitro group is a strong electron-absorbing group, reduces the electron cloud density of the benzene ring, affects the electron distribution of the connected part, and makes the molecule more prone to reactions such as nucleophilic substitution, which affects the stability. In the redox environment, the nitro group may participate in the reaction and further change the molecular structure.
3-oxo-3,4-dihydronaphthalene moiety, the presence of carbonyl groups (C = O) makes this region active. Carbonyl groups can participate in nucleophilic addition reactions. If there are suitable nucleophilic reagents in the surrounding environment, they may react with them, destroying the original structure of the molecule and reducing stability.
The sulfonate part is relatively stable, the sulfonic acid group has good water solubility, and the sulfur atom is in a higher oxidation state, and the chemical properties are relatively stable. It can enhance the solubility of compounds in water. However, if the pH of the environment changes greatly, the sulfonic acid group may be protonated or deprotonated. Although it does not necessarily directly destroy the core structure of the molecule, it may affect the intermolecular interaction and indirectly affect the stability.
Overall, the stability of 4- [ (2-hydroxynaphthalene-1-yl) hydrazone] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate is comprehensively affected by each group, and it shows different stability states due to the possible reactions of each group under different chemical environments.

Today there is a question, 4- [ (2-hydroxynaphthalene-1-yl) hydrazine fork] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate is in the market, what is the price of it? This is a fine chemical substance. According to the ancient books, there is rarely a clear record of its value in the market. Its application is quite specialized, or it is mostly required for specific experiments and industrial processes, and the audience is limited, so its trade is not as wide as usual.
However, if the valence law of related fine chemicals is studied, the price of such products with special structure and function often depends on purity, yield, supply and demand. If the purity is high, it can be the first choice for scientific research, and the price will be high; if the output is thin, the rare is expensive, and the price will also increase. And if there is a large number of people who need it for a while, and the supply is insufficient, the price will also increase.
Although there is no conclusive price, with common sense, if it is ordinary purity and used for general experimental research, the price per gram may be between tens and hundreds of dollars; if it is high purity and reaches analytical purity or above, it is specially used for high-end scientific research and special industrial use, and the price per gram may be more than a thousand dollars, or even higher. This is all speculation, and the actual price still needs to be consulted with chemical reagents and fine chemical suppliers before it can be confirmed.