4(5)-Cyanomethylimidazole

Methoxypyridine, its main use is recorded in "Tiangong Kaiwu", and it is mostly involved in the field of medicine and dyeing and weaving.
In the use of medicine, ancient doctors observed its properties and found that it had a certain healing power. At that time, medicine was not as developed as it is today, and many herbs and stones were selected by physicians to explore and cure diseases. Methoxypyridine has been processed and compatible, and can be used as a medicine, or to relieve pain, or to regulate the viscera. Because of its ingredients, it can be in harmony with the qi and blood of human meridians, meridians, and collaterals. Although it is difficult to be as detailed as the accurate analysis of today's science, the ancients accumulated experience and knew that it was useful for certain diseases.
As for dyeing and weaving, this substance has a great effect. In ancient dye workshops, if you want to get fabrics with bright and lasting color, you often need to find good dyes. Methoxypyridine can be used as a dyeing aid, which can make the fabric uniform and firm, and not easy to fade. Although the dyeing and weaving techniques at that time were very different from today, the pursuit of dyes and auxiliaries was the same in ancient and modern times. With their wisdom, craftsmen discovered the effectiveness of methoxypyridine in this way in practice, so they were widely used in dyeing and weaving industries, making the fabric rich in color, or dazzling, or elegant and generous, meeting the aesthetic needs of people in the time for clothing and fabrics, and also promoting the advanced development of dyeing and weaving technology.

Cyanomethylpyridine, scientific name 2-cyano-3-methylpyridine, is an important intermediate in the field of organic synthesis and is widely used in medicine, pesticides, dyes and other industries. Its physical properties are as follows:
- ** Appearance and Properties **: Under normal conditions, cyanomethylpyridine appears as a colorless to light yellow liquid, with a clear and transparent appearance. Under specific light conditions, its faint luster can be seen, like a calm light yellow liquid. < Br > - ** Melting boiling point **: The melting point is about - 20 ° C. Under this temperature, cyanomethylpyridine will condense from liquid to solid state, and the molecular activity is greatly limited; the boiling point is about 198 - 200 ° C. When the temperature rises to this range, cyanomethylpyridine will rapidly vaporize, and the molecules will break free from the liquid phase and escape into space.
- ** Solubility **: It is soluble in a variety of common organic solvents, such as ethanol, ether, acetone, etc., just like fish entering water, it naturally fuses to form a uniform and stable solution; however, its solubility in water is relatively small, and only a very small amount can be dissolved in the aqueous phase. The mixed system formed with water is often obviously stratified. < Br > - ** Density **: The density is about 1.05g/cm ³, which is slightly larger than the density of water. Therefore, when cyanomethylpyridine is dropped into the water, it will slowly sink, like a tiny heavy object sinking to the bottom.
- ** Odor **: Cyanomethylpyridine has a special pungent smell. It smells like a sharp breath rushing directly into the nasal cavity, which makes people instantly alert. This smell can be perceived at very low concentrations.
- ** Stability **: Under normal temperature and pressure conditions, cyanomethylpyridine has certain stability. However, in case of open flames and hot topics, it is very easy to burn, and it ignites quickly like dry firewood in case of fire; in contact with strong oxidants, violent reactions may also occur, like Mars colliding with gunpowder, causing dangerous consequences. Therefore, during storage and use, special attention should be paid to safety matters such as fire prevention, explosion prevention and oxidation prevention.

Alkyl nitro explosive is a powerful explosive. Its chemical properties are unique and extremely dangerous.
In this explosive, elements such as carbon, hydrogen, nitrogen, and oxygen are combined in a specific ratio and structure. In the molecular structure, the presence of nitro (-NO ²) gives it strong oxidation, while the alkyl methyl structure provides hydrocarbon components that can be oxidized.
In terms of reactivity, alkyl nitro explosives are easily triggered by intense chemical reactions when heated, impacted, or under specific initiation conditions. Due to the instability of nitro groups, under the stimulation of external energy, they rapidly decompose, releasing a large amount of heat and gas. Heat prompts the surrounding explosives to further react, forming a chain reaction, releasing a huge amount of energy in an instant.
Furthermore, it is highly sensitive. Small energy input, such as static electricity generated by slight impact and friction, may cause its explosion. This is due to the characteristics of chemical bonds in its molecular structure, and small external energy can break the balance of chemical bonds and start the process of reaction.
In addition, the explosive products contain harmful gases, such as nitrogen oxides, which not only cause serious pollution to the environment, but also cause great harm to the respiratory system of organisms.
In summary, alkyl nitro explosives have the characteristics of strong explosive, high sensitivity and product hazard due to their special chemical properties. When storing, transporting and using, it is necessary to follow extremely strict safety procedures to prevent unexpected accidents.

To prepare cyanobenzyl pyridine, there are various methods. Today, imitating the text of "Tiangong Kaiwu", it is described as follows.
First, pyridine and cyanobenzyl are used as raw materials, supplemented by suitable catalysts, and the two are reacted at specific temperatures and pressures. Pyridine is active, and cyanobenzyl also has considerable reactivity. When the two encounter catalysts, the reaction can be promoted. The temperature is controlled between tens of degrees Celsius, and the pressure is adjusted as needed. In this way, the two interact, or cyanobenzyl pyridine can be obtained. When reacting, when paying attention to the process of the reaction, various analytical methods, such as chromatography, can be used to observe the formation of products and the consumption of raw materials. < Br >
Second, the pyridine can be modified first, introducing some functional groups to increase the selectivity of its reaction. Then the modified pyridine meets cyanobenzyl, and under suitable reaction conditions, it is combined. This approach may improve the purity of the product and reduce the generation of side reactions. The method of modifying pyridine, either by substitution reaction or by addition, depends on the structure of the pyridine and the characteristics of the desired product.
Third, other compounds are also used as starting materials to obtain cyanobenzyl pyridine through multi-step reaction. First, a compound is reacted and converted into a pyridine-containing similar structure, and then cyanobenzyl is introduced. Although the steps of this multi-step reaction are complicated, high-purity cyanobenzylpyridine can be obtained if each step of the reaction can be properly controlled. Each step of the reaction requires careful selection of reagents and conditions to ensure that the reaction proceeds in the expected direction and minimizes the generation of impurities.
All these methods have advantages and disadvantages. When actually handling, consider the availability of raw materials, cost considerations, and purity requirements of the product.

When storing and transporting cyanomethylnitramine, many precautions need to be kept in mind.
Bear the brunt. Because of its flammable and explosive characteristics, the storage place must be selected in a cool, dry and well-ventilated place, away from fire and heat sources. It should also be stored separately from oxidants, acids, alkalis, etc., and must not be mixed to prevent violent chemical reactions and the risk of explosion.
Furthermore, the packaging should be solid and reliable, tightly closed to prevent leakage. During transportation, the vehicle used should be equipped with the corresponding variety and quantity of fire equipment and leakage emergency treatment equipment. During driving, ensure that the container does not leak, collapse, fall, or damage. And the speed of the vehicle should not be too fast during transportation, and it is not allowed to forcibly overtake the vehicle to prevent the package from being damaged due to bumps, collisions, etc., causing leakage.
In addition, operators must undergo special training and strictly abide by the operating procedures. In the storage area and during transportation, obvious warning signs should be set up to remind personnel to pay attention to safety. At the same time, it is necessary to be equipped with a complete emergency rescue plan and appropriate protective equipment. In the event of leakage and other accidents, emergency treatment can be carried out quickly and effectively to reduce hazards.
Storage and transportation of cyanomethyl nitramine requires careful treatment of every link to ensure the safety of personnel and the environment is not endangered.