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

This is a rather complex compound named (4Z) -4- [ (1-hydroxynaphthalene-2-yl) hydrazine] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sodium sulfonate. To clarify its chemical structure, it is necessary to analyze each part one by one.
The first word " (4Z) " is the configuration identification, and the configuration of the table double bond is Z-type. "4- [ (1-hydroxynaphthalene-2-yl) hydrazine]", where "1-hydroxynaphthalene-2-yl" refers to the 1-position hydroxy group of the naphthalene ring, and the 2-position is connected to the hydrazine group. " 7-Nitro "table has nitro substitution at the 7th position of the 3,4-dihydronaphthalene ring." 3-oxo "means that the 3rd position of the 3,4-dihydronaphthalene ring is carbonyl." 3,4-dihydronaphthalene-1-sodium sulfonate "indicates that this is a dihydronaphthalene derivative, with a sulfonate group at 1 position and a sodium salt.
In summary, the structure of the compound is a 3,4-dihydronaphthalene ring as the parent nucleus, with sodium sulfonate at 1 position, carbonyl at 3 position, nitro at 7 position, and [ (1-hydroxynaphthalene-2-yl) hydrazine] connected by double bonds at 4 positions, and the whole is a specific spatial configuration, that is, the 4-position double bond is Z-type. In this way, its chemical structure can be clearly presented.

This is (4Z) -4- [ (1-hydroxynaphthalene-2-yl) hydrazone] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate sodium, and its physical properties are quite worthy of investigation.
Looking at its morphology, it is usually in a solid state, or in the form of powder, and the color may vary depending on impurities and preparation processes. It is common or white-like to yellow powder. Under careful inspection, the powder texture is uniform and delicate.
When it comes to solubility, this compound exhibits a certain solubility in water, because it contains a sodium sulfonate group, which is hydrophilic and can interact with water molecules to form hydrated ions, which are then dissolved in water. However, its solubility may be limited in organic solvents such as ethanol and ether, because its molecular structure also contains hydrophobic naphthalene rings and other groups, which affects its dispersion in organic solvents.
In terms of melting point, after accurate determination, the melting point of this substance is in a specific temperature range, which is of great significance for identifying its purity and structural stability. The determination process of melting point is rigorous, and professional instruments are required to accurately capture the phase transition temperature.
In terms of stability, this compound can remain relatively stable in normal temperature, pressure and dry environment. In case of high temperature, high humidity environment, or due to hydrolysis, oxidation and other reactions, the structure changes. Under light, some groups in its molecular structure may be excited, triggering photochemical reactions and causing their properties to change.
In summary, the physical properties of (4Z) -4- [ (1-hydroxynaphthalene-2-yl) hydrazone] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sodium sulfonate are of important reference value in chemical research, industrial applications and many other fields. Its morphology, solubility, melting point and stability lay a solid foundation for further exploration of its chemical behavior and practical use.

Sodium (4Z) -4- [ (1-hydroxynaphthalene-2-yl) hydrazone] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate This substance has a wide range of uses. In the field of scientific research, it is often used as a chemical analysis reagent. Due to its unique structure, it can react specifically with many substances, so that the composition and content of other substances can be accurately determined, just like in ancient times. Test its characteristics.
In pharmaceutical research and development, it is also of important value. Or it can be used as a lead compound, which can be carefully modified and modified by chemists to find drugs with better pharmacological activity. Just like ancient healers tried the combination of various herbs for the best efficacy. It is also possible in the field of materials science. Or it can participate in the preparation of materials with special properties, such as smart materials that have unique responses to external stimuli such as light, electricity, magnetism, etc., just like the ancients exploring special materials to create unique functional utensils.
In addition, in biological imaging, it can act as a fluorescent probe. Due to its own characteristics, it can develop specific structures or molecules in organisms, helping researchers to understand the mysteries of the microscopic world in organisms, just like the ancients used special markers to understand the subtleties of things. All of these demonstrate their key uses in many fields, contributing to the development of modern science, just as ancient wisdom continues to accumulate and promote the progress of civilization.

To prepare (4Z) -4- [ (1-hydroxynaphthalene-2-yl) hydrazone] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate sodium, the method is as follows:
First take 1-hydroxynaphthalene-2-formaldehyde and place it in a clean reaction vessel. Also prepare an appropriate amount of 7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate sodium salt, also set aside.
In a suitable solvent, such as an alcohol solvent, because it can dissolve the reactants well and is mild in nature, it will not cause too many side reactions. Add the sodium salt of 1-hydroxynaphthalene-2-formaldehyde and 7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonic acid slowly and stir well.
Subsequently, add an appropriate amount of weak base as a catalyst, such as sodium acetate, which can promote the reaction without over-catalyzing and generating impurities. Control the reaction temperature and maintain it in a moderate range, between about 50 and 70 degrees Celsius. This temperature can not only ensure the reaction rate, but also ensure the selectivity of the reaction.
During the reaction process, pay close attention to the changes of the reaction system, and monitor the reaction process by means of thin-layer chromatography. When the reaction reaches the desired level, stop heating and let the reaction mixture cool naturally. After
, the product is separated and purified. Filtration can be used to remove unreacted solid impurities. Then by the method of recrystallization, select a suitable solvent, such as ethanol-water mixed solvent, according to the solubility difference of the product in the solvent at different temperatures, recrystallize many times to obtain pure (4Z) -4- [ (1-hydroxynaphthalene-2-yl) hydrazone] -7-nitro-3-oxo-3,4-dihydronaphthalene-1-sodium sulfonate. Finally, after drying treatment, the target product can be obtained.

The description of "Tiangong Kaiwu" is a practical study, which is related to the skills of all kinds of workers. Now this thing, that is, Sodium (4Z) -4- [ (1-Hydroxynaphthalen-2-Yl) Hydrazono] -7-Nitro-3-Oxo-3, 4-Dihydronaphthalene-1-Sulfonate, there are several things to be careful about when storing and transporting.
First of all, this thing may have an impact on the environment, so when storing, it should be placed in a specific place to avoid it leaking and polluting the surrounding water and soil. And its location should be dry, cool and well ventilated. Due to moisture, high temperature and lack of ventilation, its properties may change.
When transporting, it is necessary to choose the appropriate container according to its chemistry. If the container is not suitable, or it is damaged and leaked due to vibration or collision. And the person handling it should have the corresponding knowledge, handle it with care, and do not let it be shocked or hit violently.
In addition, this object may have a certain chemical activity, and it should be separated from other chemicals during storage to prevent interaction and risk. During transportation, it is also necessary to ensure isolation from other objects, especially those that can chemically react with it, and must not be mixed.
In addition, no matter whether it is stored or transported, there should be measures to deal with emergencies. If there is a leak, it should be known how to properly dispose of it to prevent the harm from expanding. Relevant personnel should be aware of their emergency measures, such as the use of protective equipment, the collection and handling of leaks, etc. In this way, the safety of storage and transportation can be preserved to avoid accidents.