(3E)-5-Amino-6-[(E)-{4'-[(E)-(2,4-Diaminophenyl)Diazenyl]Biphenyl-4-Yl}Diazenyl]-4-Oxo-3-(Phenylhydrazono)-3,4-Dihydronaphthalene-2,7-Disulfonic Acid

The Chinese name of this compound is (3E) - 5 - amino - 6 - [ (E) - {4 '- [ (E) - (2,4 - diaminophenyl) azo] biphenyl - 4 - yl} azo] - 4 - oxo - 3 - (phenylhydrazone) - 3,4 - dihydronaphthalene - 2,7 - disulfonic acid.
Its chemical structure is composed of many parts: the naphthalene ring acts as the core skeleton, and there is a (E) phenylhydrazone group in the 3 position of the naphthalene ring, a carbonyl oxygen group in the 4 position, an amino group in the 5 position, and a complex azo-structured side chain in the 6 position. This side chain is formed by connecting two azo groups, one end is 4 '- [ (E) - (2,4-diaminophenyl) azo] biphenyl-4-yl. In addition, the 2,7 positions of the naphthalene ring are respectively connected with sulfonic acid groups.
This complex structure endows the compound with unique chemical properties and possible application scenarios, such as in the field of dye chemistry, because it contains multiple chromophores (azo groups, etc.), or can be used as a unique dye component. In scientific research and exploration, a variety of reactive groups in its structure may be used to design new chemical reactions, contributing to the development of organic synthetic chemistry.

(3E) - 5-Amino-6- [ (E) - {4 '- [ (E) - (2,4-diaminophenyl) azo] biphenyl-4-yl} azo] -4-oxo-3- (phenylhydrazone) -3,4-dihydronaphthalene-2,7-disulfonic acid, an organic compound with a variety of important physical properties.
Looking at its properties, it is mostly in solid form under normal conditions, and because the molecular structure contains many conjugated systems and polar groups, its color is often darker, or orange-red, red and other bright colors. This is because the conjugated system can absorb specific wavelengths of light in the visible region, showing corresponding complementary colors.
In terms of solubility, because there is a strong polar group of sulfonic acid groups in the molecule, it has a certain solubility in water and can be soluble with water molecules by hydrogen bonding; however, the molecule contains benzene ring, naphthalene ring and other non-polar parts, so it has a certain solubility in polar organic solvents such as ethanol and acetone, and poor solubility in non-polar organic solvents such as n-hexane and benzene.
Melting point is also a key physical property. Due to the complex intermolecular forces, including hydrogen bonds, van der Waals forces, etc., its melting point is high. The exact melting point needs to be accurately determined experimentally, but it can be speculated that due to the close bonding between molecules, a higher temperature is required to destroy the lattice structure and melt the substance.
In terms of stability, the compound molecule contains functional groups such as azo groups and phenylhydrazone groups, which are sensitive to light and heat. Under light, azo groups are prone to cis-trans isomerization, resulting in changes in molecular structure and properties; at high temperatures, some chemical bonds may break, triggering decomposition reactions. Therefore, when storing, it should be placed in a cool and dark place to prevent deterioration.

The synthesis of (3E) - 5 -amino-6- [ (E) - {4 '- [ (E) - (2,4 -diaminophenyl) azo] biphenyl-4-yl} azo] -4 -oxo-3- (phenylhydrazone) -3,4 -dihydronaphthalene-2,7 -disulfonic acid is ancient and very delicate.
Naphthalene derivatives are taken first, which are fundamental. In a specific method, the sulfonic acid group is introduced, which can be placed precisely at the 2,7 positions of the naphthalene ring. This step requires subtle control of the temperature, duration and ratio of the reagent of the reaction. If the temperature is high, it is easy to produce impurities, and if the temperature is low, the reaction will be slow. The reaction must be smooth with the appropriate temperature.
Then, at the 3rd position of the naphthalene ring, a phenylhydrazone group is introduced. This requires the selection of a suitable phenylhydrazine reagent, and the solvent and pH are carefully prepared in the reaction system. A slight deviation in acidity and basicity may cause the reaction direction to be wrong or the product to be impure.
Furthermore, the amino group is introduced at the 5-position. This process requires the selection of a specific amination reagent. With the help of an ingenious reaction mechanism, the amino group is exactly at the 5-position without affecting other groups. This step requires a deep understanding of the reaction conditions in order to achieve the expected effect.
As for the key diazo coupling reaction, to construct a complex azo structure. First prepare the diazo salt containing a specific substituent, the diazotization conditions need to be strictly controlled to prevent the decomposition of the diazo salt. Then react with suitable coupling components, in which the reactivity and steric resistance need to be carefully considered. The introduction of 4 '- [ (E) - (2,4-diaminophenyl) azo] biphenyl-4-yl should be accurate, the reaction steps are closely connected, and it is difficult to obtain pure (3E) - 5-amino-6- [ (E) - {4' - [ (E) - (2,4-diaminophenyl) azo] biphenyl-4-yl} azo] - 4-oxo-3 - (phenylhydrazone) - 3,4-dihydronaphthalene-2,7-disulfonic acid products. The way of synthesis is like a delicate work, and every step of the way requires caution to form this delicate compound.

(3E) - 5 -Amino-6- [ (E) - {4 '- [ (E) - (2,4 -diaminophenyl) azo] biphenyl-4-yl} azo] -4 -oxo-3- (phenylhydrazone) -3,4 -dihydronaphthalene-2,7 -disulfonic acid This substance is useful in many fields such as printing and dyeing, pigments, etc.
In the printing and dyeing industry, it can be used as a reactive dye, and can be closely linked to fabric fibers by virtue of its own structural characteristics. In the dyeing and finishing process, the fabric is colored through it, and the color is bright and firm. Because there are many active groups in the molecule that can bind to the fiber, it can generate stable chemical bonds, which makes the dyeing effect outstanding. Whether it is natural fiber fabrics such as cotton and linen silk or some chemical fiber fabrics, it can be dyed with colorful colors, which greatly enriches the color performance of the fabric.
In the field of pigments, the compound has excellent light resistance, weather resistance and chemical stability due to its special chemical structure. The pigments prepared by it can be widely used in inks, coatings and other industries. In ink manufacturing, it can give the ink good printability and color saturation, and print on paper, and the color will last for a long time. In the paint industry, paints can be brightly colored and durable. Whether it is interior decoration paints or outdoor protective paints, they can be used to improve quality, extend service life, and resist external environmental erosion.

(3E) - 5-Amino-6- [ (E) - {4 '- [ (E) - (2,4-diaminophenyl) azo] biphenyl-4-yl} azo] -4-oxo-3- (phenylhydrazone) -3,4-dihydronaphthalene-2,7-disulfonic acid This product is of great concern to everyone in the current market prospect.
Looking at its chemical structure, it is complex and delicate, contains many special functional groups, or has unique chemical and physical properties. It is used in the field of scientific research or is an important research object. However, in the market, there is still a need for more research.
In scientific research, due to its special structure, it may be able to open up new avenues for exploration in cutting-edge fields such as materials science and drug research and development. In materials science, new functional materials may be developed based on their unique properties. If applied to electronic components, optical materials, or new properties can be added. In drug research and development, its structure may be related to biological activity, and after in-depth research, it may become a lead compound for new drugs, bringing hope for conquering difficult diseases.
However, if you want to enter the market, there are many challenges. The preparation process may be extremely complex and costly, which makes it expensive and affects market competitiveness. And its safety and environmental impact also need to be carefully evaluated. In marketing activities, it is also necessary to let the relevant industries know its advantages and application prospects.
If the preparation cost, security evaluation and other problems can be properly solved, this compound may open up new markets and lead industrial changes in materials, medicine and other fields; if not, or can only exist in the laboratory, it is difficult to develop market ambitions.