Benzothiazole
Quinoline Thiophene Imidazole Thiazole
Benzothiazole
Name Benzothiazole
Chemical Formula C7H5NS
Molar Mass 135.19 g/mol
Appearance Colorless to yellowish crystals or liquid
Odor Characteristic, unpleasant odor
Density 1.24 g/cm³ (at 20 °C)
Melting Point 18 - 20 °C
Boiling Point 221 - 222 °C
Solubility In Water Slightly soluble
Solubility In Organic Solvents Soluble in many organic solvents
Flash Point 96 °C
Stability Stable under normal conditions
FAQ

What are the main uses of Benzothiazole?

Benzothiazole has a wide range of uses and is used in various fields.

First, in the field of medicine, it has great merit. It is often the key raw material for the creation of drugs. Many antibacterial, antiviral, and anti-tumor drugs rely on the chemical properties of benzothiazole. Because of its unique molecular structure, it can interact with specific targets in organisms, inhibit the growth and reproduction of pathogens, or intervene in the metabolic process of tumor cells, and escort human health.

Second, in the pesticide industry, it is also indispensable. It can be used to produce insecticides, bactericides, and herbicides. It can precisely act on the physiological mechanism of pests, pathogens and weeds, or destroy the nervous system of pests, or inhibit the cell wall synthesis of pathogens, or interfere with the photosynthesis of weeds, so as to ensure that the mulberry is safe and the harvest is abundant.

Third, in the field of materials science, benzothiazole also shows its ability. Polymer materials can be added to improve the heat resistance, weather resistance and mechanical properties of the material. And because of its fluorescent properties, in the field of optoelectronic materials, it is often used to prepare Light Emitting Diode and fluorescent probe materials, so that the device has better luminous efficiency and more accurate and sensitive detection.

Fourth, in the dye industry, it has made outstanding contributions. The dye based on benzothiazole has a bright color and good fastness. It can be used for dyeing fabrics, leather, etc. The dyed things are fresh and bright for a long time.

In summary, benzothiazole plays a crucial role in the pharmaceutical, pesticide, material, dye and other industries, and is an indispensable and important compound in the chemical industry.

What are the physical properties of Benzothiazole?

Benzothiazole is also an organic compound. Its physical properties are particularly important, related to its wide and narrow use.

Looking at its shape, under room temperature, benzothiazole is often white to light yellow crystalline powder, its quality is delicate, slightly shiny in the sun, like fine sand hidden in broken gold.

When it comes to smell, it has a unique faint aroma, not rich and pungent, but also unique, if not, lingering in the nose, like the faint ink fragrance emitted by ancient books.

Its melting point is about 18 to 20 degrees Celsius, just like the temperature of spring, neither cold nor hot. In this heat, benzothiazole gradually melts from a solid state and turns into a liquid, just like ice and snow melting in spring. The boiling point is about 231 to 234 degrees Celsius. When the temperature reaches this point, it boils and tumbles, turning into a gaseous state and rising up like a cloud.

The solubility of benzothiazole is also interesting. In water, its solubility is very small, just like Coats does not cooperate with the world, it only dissolves slightly, and it is difficult to form a general trend. However, in organic solvents such as ethanol, ether, and chloroform, it can be better dissolved, just like when friends meet, blend with each other, and mix into one.

Furthermore, its density is also considerable. The density is about 1.378 grams/cubic centimeter, which is slightly higher than that of ordinary water. When placed in water, it slowly sinks, like a stone falling into an abyss, stable but not floating.

The physical properties of this benzothiazole, whether it is related to the synthesis of chemical industry or the development of medicine, are all indispensable elements, such as silk string beads, linking many applications.

Is Benzothiazole chemically stable?

Benzothiazole is also a genus of organic compounds. Its chemical properties are quite stable.

Benzothiazole contains a benzene ring and a thiazole ring, which are conjugated to make the molecular structure strong. The benzene ring is aromatic, and the electron cloud is evenly distributed, which is not easy to be broken by general reagents. The thiazole ring also has certain stability, and the two rings are combined, which increases the overall stability.

In terms of reactivity, the benzene ring of benzothiazole can undergo electrophilic substitution reaction like a common aromatic hydrocarbon, but because of its conjugate system, the reaction conditions may be more severe. The nitrogen and sulfur atoms on the thiazole ring have lone pairs of electrons, which can participate in coordination and can complex with metal ions. This reaction also requires specific conditions.

In common chemical environments, benzothiazole is difficult to change without strong reagents and severe conditions. In case of strong acids, strong bases or strong oxidants, they may react at specific temperatures and pressures, but they are very stable at room temperature and pressure.

In summary, the chemical properties of benzothiazole are relatively stable, and they can maintain their own structure in many common scenarios, and are not prone to significant chemical transformations.

What are the synthesis methods of Benzothiazole?

Benzothiazole, as well as organic heterocyclic compounds, is synthesized by a variety of methods, which are described here.

One is the method of condensation of o-aminothiophenol and formic acid. When o-aminothiophenol encounters formic acid, the two are combined in the phase. After condensation, water is removed to form benzothiazole. In this process, appropriate temperature and catalyst need to be selected to promote the reaction speed and increase the yield of the product. If the temperature is too high or too low, it can cause poor reaction and low yield.

The second is the method of reacting o-halogenated aniline with thiocyanate. When o-halogenated aniline meets thiocyanate, thiourea derivatives are formed first, and then cyclized to obtain benzothiazole. In this approach, the type of halogenation, the solvent for the reaction and the choice of base are all key. Different halogenated groups have different reactivity; suitable solvents can help the reactants to be miscible and facilitate the reaction; the strength and dosage of bases also have a great influence on the reaction.

The third is the reaction of 2-aminophenylthiol with alarms or ketones. The two are mixed and cyclized by condensation, and benzothiazole can also be obtained. The structure of the aldehyde or ketone has a significant impact on this reaction. Fatty aldodes and aromatic aldodes have different reactivity, and the yield and purity of the products are also different.

The fourth is the synthesis of the reaction catalyzed by transition metals. Under the catalysis of metals such as palladium and copper, specific aromatic halides react with thiocyanates, etc., through complex catalytic cycles, to eventually form benzothiazole. In this method, the design of the ligand of the metal catalyst is of paramount importance, and the ligand can affect the activity and selectivity of the catalyst, thereby affecting the effect of the reaction.

The above synthesis methods each have their own strengths and weaknesses. In practical application, when the availability of raw materials, cost considerations, product requirements and other factors, careful choices can be made to achieve the purpose of synthesis.

What industries is Benzothiazole used in?

Benzothiazole is an important organic compound that is widely used in many industries.

In the pharmaceutical industry, it has a wide range of uses. It has a specific chemical structure and biological activity, and can be used as a key intermediate in drug synthesis. For example, the development of some antibacterial drugs and antiviral drugs often relies on benzothiazole and its derivatives. Based on it, chemically modified and modified, drug molecules with different pharmacological properties can be obtained, contributing to human health.

In the pesticide industry, benzothiazole is also indispensable. Many pesticide varieties use their chemical properties to achieve insect control and bactericidal effects. It can interfere with the physiological and metabolic processes of pests or pathogens, such as inhibiting the activity of specific enzymes, making it difficult for pests or pathogens to survive and multiply, ensuring the robust growth of crops and increasing agricultural yields.

In the field of materials science, benzothiazole is also common. For example, in polymer materials, the introduction of benzothiazole structure can improve the properties of the material. Or enhance the heat resistance of the material, so that it can still maintain stable physical properties in high temperature environments; or improve the mechanical strength of the material, making the material more durable, and play an important role in aerospace, automobile manufacturing and other fields that require strict material properties.

Furthermore, in the dye industry, benzothiazole also has a place. From its ability to synthesize dyes with special colors and dyeing properties, it is widely used in textiles, leather and other industries to add brilliant color to products.

From this point of view, benzothiazole plays an important role in the pharmaceutical, pesticide, material science, dye and other industries, and is of great significance in promoting the development of various industries.