What is the chemical structure of 1H-Indene-1,3 (2H) -dione, 2- (2-quinolinyl) -, sulfonated, sodium salts?

This is 1H-indene-1,3 (2H) -dione, 2- (2-quinolinyl) -, a salt formed by the sulfonation product and sodium obtained after sulfonation. The analysis of its chemical structure is as follows:

The structure of indene is a fused cyclic aromatic hydrocarbon, which is formed by combining a benzene ring with a five-membered ring. In 1H-indene-1,3 (2H) -dione, the carbon atoms at the 1st and 3rd positions of the indene ring (2H means that the hydrogen atom at the 2nd position can be changed due to factors such as reaction) are each connected with a carbonyl group, forming the structure of diketone.

In addition, the 2-position is connected to a 2-quinolinyl group. Quinoline is a nitrogen-containing heterocyclic compound composed of a benzene ring and a pyridine ring. 2-quinolinyl means that the 2-position of the quinoline ring is connected to the 2-position of the indene ring.

Finally, the compound is sulfonated, that is, a sulfonic acid group (-SO 🥰 H) is introduced into the molecular structure, and the hydrogen atom of the sulfonic acid group is replaced by sodium ions to form a sodium salt. This compound has unique chemical properties and potential application value due to its many different structural units, or plays a role in organic synthesis, materials science and other fields.

What are the physical properties of 1H-Indene-1,3 (2H) -dione, 2- (2-quinolinyl) -, sulfonated, sodium salts

2- (2-quinolinyl) -1H-indene-1,3 (2H) -diketone sulfonated sodium salt. The physical properties of this substance are as follows:

Looking at its appearance, it is often powdery or crystalline, and the color is mostly white to light yellow. Its solubility is quite important, and it is soluble in water. This characteristic is derived from the sulfonic acid group introduced after sulfonation. Because the sulfonic acid group has strong hydrophilicity, it can make the substance have good solubility in water.

When it comes to melting point, there is no exact public universal fixed value. Due to the degree of sulfonation and the specific form of sodium salt, the melting point may vary. In terms of its stability, under normal conditions, if it is properly stored to avoid moisture, heat and contact with active substances such as strong oxidants, strong acids and bases, the substance can maintain a relatively stable state. However, in high temperature, high humidity or specific chemical reaction environments, its structure may change, resulting in changes in chemical properties.

Density also varies depending on the specific preparation process and purity, and is generally within a certain range. This substance may exhibit specific ionic properties in aqueous solutions. Because sodium salts can dissociate sodium ions, it may affect the conductivity, acidity and alkalinity of the solution. Its spectral characteristics can be seen in the infrared spectrum, or the characteristic absorption peaks corresponding to the indanedione structure, quinoline group and sulfonic acid group, which can be used for structural identification and analysis.

What is the main use of 1H-Indene-1,3 (2H) -dione, 2- (2-quinolinyl) -, sulfonated, sodium salts

1H-indene-1,3 (2H) -diketone, 2- (2-quinolinyl) -, sulfonated, sodium salt, this substance is widely used. In the dyeing and weaving industry, it can be used as a dye. With its unique chemical structure, after sulfonation and sodium salt treatment, it has good water solubility and can be firmly combined with fabric fibers, resulting in uniform dyeing and lasting bright color. It is often relied on in dyeing workshops to add color to fabrics. In the field of chemical synthesis, it is a key intermediate. Through a series of organic reactions, many compounds with special properties can be derived, or used in pharmaceutical research and development, or to help create new materials, paving the way for chemical exploration. In terms of research and analysis, its unique chemical properties make it a powerful tool for scientific research. Scientists can gain insight into the mysteries of organic chemistry and advance the development of chemical disciplines by exploring its reaction mechanism and properties. In the paper industry, it may optimize paper properties, such as improving paper color stability and water resistance, so that paper quality can be improved. This substance plays an important role in many industries and continues to demonstrate its extraordinary value in industrial production and scientific research.

What are the preparation methods of 1H-Indene-1,3 (2H) -dione, 2- (2-quinolinyl) -, sulfonated, sodium salts

To prepare 2 - (2-quinolinyl) -1H-indene-1,3 (2H) -diketone sulfonated sodium salt, there are several methods.

First, use 2-quinolinaldehyde and 1,3-indanedione as starting materials. In a suitable reaction vessel, add an appropriate amount of organic solvent, such as ethanol, dichloromethane, etc., and adjust it to a suitable temperature, generally between room temperature and 50 degrees Celsius. Add alkali catalysts, such as sodium carbonate and potassium carbonate, in an amount of about 0.1 to 0.5 times the number of moles of raw materials. After several hours, about 3 to 8 hours, 2- (2-quinolino) -1H-indene-1,3 (2H) -dione can be obtained by stirring the two. Subsequently, the product is moved to another reactor, concentrated sulfuric acid or fuming sulfuric acid is added as a sulfonation reagent, and the reaction temperature is controlled at 50 to 100 degrees Celsius for about 2 to 6 hours to achieve sulfonation. After the reaction is completed, it is neutralized with sodium hydroxide or sodium carbonate solution and adjusted to neutral or weakly basic to obtain 2- (2-quinolinyl) -1H-indene-1,3 (2H) -dione sulfonated sodium salt. < Br >
Second, a derivative of 2-haloquinoline and 1,3-indanedione is used as a raw material. In an organic solvent such as N, N-dimethylformamide, a metal catalyst such as copper powder or palladium catalyst, and a ligand such as o-phenanthroline are added. Warm to 80 to 120 degrees Celsius, stir the reaction for 8 to 12 hours, and first prepare 2 - (2-quinolinyl) -1H-indene-1,3 (2H) -dione related intermediates. After that, with the above sulfonation and neutralization steps, the target product can also be obtained.

Third, microwave-assisted synthesis is used. 2-Quinoline formaldehyde, 1, 3-indanedione and an appropriate amount of alkali catalyst were placed in a microwave reaction vessel, and a small amount of organic solvent was added. The microwave power was set at 100 to 300 watts, the reaction temperature was 40 to 60 degrees Celsius, and the reaction time was 10 to 30 minutes. Fast synthesis of 2- (2-quinolinyl) -1H-indanedione-1,3 (2H) -dione. Subsequent sulfonation and neutralization treatment obtained 2- (2-quinolinyl) -1H-indanedione-1,3 (2H) -dione sulfonated sodium salt. Compared with the traditional method, this method has a short reaction time and high efficiency.

1H-Indene-1,3 (2H) -dione, 2- (2-quinolinyl) -, sulfonated, sodium salts What are the precautions during use

2 - (2 -quinolinyl) -1H-indene-1,3 (2H) -diketone sulfonated sodium salt has many points to be paid attention to when using. This agent is a chemical product with specific properties and is safe when used. Be sure to read and follow the instructions and guidelines attached to the product carefully to understand its potential hazards and how to deal with them.

In the operating environment, it is necessary to ensure smooth ventilation. This agent may evaporate irritating gases. If the ventilation is poor, it is easy to cause gas accumulation and damage human health. The operating site should also be kept clean and dry, away from fire and heat sources, because it may be flammable or dangerous to react with heat and fire.

When taking this agent, appropriate protective measures must be taken. Protective gloves should be worn to avoid direct contact between the agent and the skin to prevent allergic or corrosive injuries. At the same time, goggles and masks should be worn to protect the eyes and respiratory tract from the dust or volatile gases of the agent.

During use, strictly control the dose and operation process. The degree of sulfonation of this agent and the form of sodium salt have a great impact on the reaction process and results. If you change the dosage or operation method at will, you may cause abnormal reactions, fail to achieve the desired effect, and even cause danger.

After use, properly dispose of the remaining agent and waste. Do not dump at will, and need to be classified and disposed of in accordance with relevant regulations to prevent pollution to the environment.

In short, when using 2- (2-quinolinyl) -1H-indene-1,3 (2H) -diketone sulfonated sodium salt, it is necessary to maintain a cautious attitude at all times, and pay full attention to safety, environment, and operating specifications in order to ensure a smooth and safe use process.