4,6-dichloropyridine-3-carbonitrile

4,6-Dinitroresorcinol-3-methyl ether, although not explicitly stated in "Tiangong Kaiwu", it has a wide range of uses in today's world.
It is mainly used in the synthesis of many fine chemicals. In the field of dyes, it is a key intermediate for the synthesis of dyes with specific colors and properties. Due to the special chemical structure of 4,6-dinitroresorcinol-3-methyl ether, it can endow dyes with excellent light resistance and washable properties. Such as the synthesis of some high-end reactive dyes for textile dyeing, it can be used as an important starting material. After a series of chemical reactions, the core structure of the dye molecule is constructed, so that the dye firmly adheres to the fabric fiber and presents a bright and long-lasting color.
In the field of medicine, it is also an important synthesis intermediate. It can participate in the preparation of specific drug molecules, because its structure can be modified to meet the needs of drug-biological target interaction. For example, in the synthesis of some antibacterial and anti-inflammatory active drugs, 4,6-dinitroresorcinol-3-methyl ether is converted into an intermediate containing specific pharmacoactive groups through multi-step reaction, and finally a drug with specific pharmacological activity is synthesized.
In addition, in the field of explosives, although not directly used as explosives, the presence of nitro groups in its structure makes it possible to participate in the synthesis of energetic materials under specific conditions. By reacting with other energetic compounds, the properties of energetic materials can be optimized, and the energy density and stability of explosives can be improved, which has potential application value in the fields of national defense and military industry.

There are various methods for the synthesis of 4,6-dinitro-m-cresol.
First, m-cresol is used as the starting material and can be obtained by nitrification reaction. M-cresol has the active properties of phenols and interacts with nitrifying reagents under specific conditions. If the mixed acid of concentrated nitric acid and concentrated sulfuric acid is used as the nitrifying agent, at an appropriate temperature, the nitro group (-NO 2) in the mixed acid can replace the hydrogen atom on the phenol ring of m-cresol. During the reaction, the temperature needs to be carefully controlled. If the temperature is too high, it is easy to cause excessive nitrification, forming a polynitro product, which affects the purity and yield of the target product. If the temperature is too low, the reaction rate is slow and takes a long time. Generally speaking, the temperature is controlled at a certain range, so that the nitro group selectively replaces the hydrogen at a specific position on the phenyl ring, thereby generating 4,6-dinitro-m-cresol.
Second, the m-cresol can be protected or modified by some groups to change its reactivity and selectivity. For example, the phenolic hydroxyl group of m-cresol is first esterified and other protective treatments to change the electron cloud density distribution of the phenyl ring, so that the nitro group is more inclined to enter the desired 4,6 position during subsequent nitrification. After the nitrification reaction is completed, the protective group is removed by an appropriate method to restore the phenolic hydroxyl group, and 4,6-dinitro-m-cresol can also be obtained. Although this process is a little complicated, it can effectively improve the purity and yield of the product, and the requirements for the reaction conditions may be slightly delayed.
Third, other nitrification systems can also be used, such as the use of nitrate esters for nitrification in the presence of catalysts. Such systems may provide a milder reaction environment and reduce the occurrence of side reactions. It is crucial to choose the right catalyst, which can accelerate the reaction process and guide the precise localization of nitro groups. Different nitrate esters and catalyst combinations have a great impact on the reaction effect. Many experiments are required to determine the best reaction conditions for the efficient synthesis of 4,6-dinitro-m-cresol.

4,6-Dinitroresorcinol-3-methyl ether is one of the organic compounds. Its physical properties are quite characteristic.
Looking at its appearance, it often shows a light yellow to yellow crystalline shape. This color state can be a significant feature when identifying. Its melting point is quite fixed, about within a specific temperature range. This melting point characteristic is of great significance in the purification and identification of substances. Because different pure compounds have their own unique melting points, their purity and category can be determined.
In addition, 4,6-dinitroresorcinol-3-methyl ether also has characteristics in terms of solubility. In some organic solvents, such as ethanol, acetone, etc., it can have a certain solubility, but in water, its solubility is relatively low. This difference in solubility can be used in chemical production and laboratory operations. For example, when separating and purifying this compound, a suitable solvent can be selected according to its solubility in different solvents, and operations such as extraction and recrystallization can be carried out to obtain high-purity products.
In addition, the density of this substance is also one of its physical properties. Its density is relatively stable, and this value has reference value for material calculation and equipment design in chemical processes. For example, in the transportation and storage of liquid materials, the density data can provide a basis for determining pipeline size, container volume, etc. The physical properties of 4,6-dinitroresorcinol-3-methyl ether, such as appearance, melting point, solubility, density, etc., play an important role in chemical research, chemical production and related fields of practical applications, providing basic data and characteristics for many operations and research.

4,6-Dinitrotoluene-3-formic acid, the price between markets, there is no fixed number. The change in its price is related to many.
First, the price of raw materials. To make this product, specific raw materials are required. If the supply of raw materials changes, the price will also follow. If the raw materials are abundant and sufficient, the price will either stabilize or decrease; if the raw materials are scarce, the price will rise.
Second, the trend of supply and demand. Those who use this, the demand exceeds the supply, and the price will be high; if the market is oversupplied, merchants will sell their goods or reduce their prices.
Third, the regulation of government. The government's administration, such as environmental regulations and tax adjustments, has an impact on the sale of its products. Strict environmental regulations, producers may increase their costs, and prices will also increase; tax increases or decreases can also make prices change.
Fourth, the advancement of technology. If new technologies are introduced, the production efficiency will increase and the cost will decrease, the price may decrease; on the contrary, if the technology does not improve, the cost will not be reduced, and the price may be maintained.
Looking at the cities, the price per kilogram may range from a hundred yuan to several hundred yuan. However, this is not a definite number, and the market conditions are ever-changing, and the price is often different. Businesspeople should observe the changes in the city, the direction of government, and the progress of technology, so as to clarify the trend of their prices, and be good at planning.

The generation of 4,6-dinitrotoluene-3-methyl ether, in the ancient world, there were also skilled craftsmen involved in this field.
In the past, there were those who were skilled in chemical technology, and their hearts were like research and synthesis. Among them, there are those who can make this thing with ingenious methods. They deeply explore the secrets of chemical reaction, using ordinary stones and materials, according to exquisite formulas and techniques, so that the interaction of materials can obtain 4,6-dinitrotoluene-3-methyl ether.
There are also people who are not afraid of hard work, and they can make different things day by day. The degree of observation, the degree of Chen Chen, and the proportion of materials are considered in order to seek the best method. His heart and soul, so that they can be in the process of chemical manufacturing, to achieve the generation of 4,6-dinitrotoluene-3-methyl ether.
There are also workers who have inherited the family, adhering to the method taught by the ancestors, from generation to generation, and strive for excellence. In terms of technical skills, do not think about changes, so that the method of manufacturing is more and more refined, and get this 4,6-dinitrotoluene-3-methyl ether good products.
These capable people, either by the method of engineering, or by the method of diligent engineering, or by the wonder of engineering, have all achieved the production of 4,6-dinitrotoluene-3-methyl ether, and in the history of chemical engineering, leave it behind.