Benzene 1 Bromo 3 Chloro 2 Iodo

This compound is called "spirit crystal". Its shape is transparent, and its brilliance is contained, as if the stars are hidden in it, flowing and changing, which is very magical. The texture is warm and delicate, and the tentacles are warm, but it does not lose its firmness. Even if you add a sharp blade, it is difficult to hurt it in the slightest.
The power of spirit crystals is mysterious and unpredictable. In the practice, if you use spirit crystals as a guide to gather spiritual energy from heaven and earth, the practitioner can absorb spiritual energy several times faster than usual, helping them break through the shackles of practice and climb the realm like a smooth path. In addition, spirit crystals can be charged for many magic treasures, and magic treasures gain the power of spirit crystals.
Spiritual crystals are born at the intersection of spiritual veins, and the spiritual energy of heaven and earth has been condensed for thousands of years before it can take shape. The land of spiritual veins is often filled with spiritual fog, and there are thousands of rosy colors, which is the place where the spirits of heaven and earth are beautiful. However, the presence of spiritual crystals in the world will attract the coveting of all parties, and disputes will arise. In the past, there was a school of immortal cultivators. In order to fight for the spiritual crystal veins, they would not hesitate to launch a sect war, and the situation and clouds would change color for a while, and life would be ruined.
Everyone says that spiritual crystals are the most precious treasures of heaven and earth, and they can change their destiny, increase their lifespan, and have great powers. Therefore, countless cultivators have spent their lives searching for traces of spiritual crystals, hoping to get a glim The secret of the spirit crystal is hidden deep between heaven and earth, waiting for those who are destined to uncover its mysterious veil and appreciate its endless wonders.

The characteristics of this compound are as follows:
First, it has a specific atomic bonding method. Each atom interacts with each other according to a specific law to form a fixed framework. For example, carbon atoms often interact with atoms such as oxygen and oxygen to form a basic skeleton. This skeleton is either serpentine or serpent-like; or, if it is jade, it is hard to find. In this system, the carbon atoms are sequentially divided, and they are extended in a natural way. The substituents of each carbon atom are different, which makes the compound more complex. Due to the size, degree and degree of the compound, such as benzene, which has a six-dimensional plane, it has a special aromaticity. Its carbon atoms are averaged, and it is generally alternating.
Second, it contains specific functionalities. Functionality is the determinant of compound properties. Such as alkyl group (-OH), which is water-based and can produce multiple antibodies, such as alkyl group in alcohol compounds can be substituted, eliminated and so on. Carboxyl group (-COOH) is acidic, because the carbonyl group in the carboxyl group interacts with each other, making it easy to solve the alkyl group, which can generate neutralization and antibodies. Another example is carbonyl (C = O), which has properties and can generate addition to antibodies. Both aldehyde and ketone compounds contain carbonyl groups, but their activity varies due to the different groups.
Third, there is a space type. The atoms or groups in the molecule have a specific arrangement in the space. For example, the inverse is due to the limitation of or, the groups are distributed differently above and below or, showing different physical properties. Due to the presence of chiral centers in the molecule, the compound has optical rotation, just like the human left and right hands. The mutual image method coincides, and the biological activity often has a significant impact.
Fourth, it has a specific crystal (if it is a solid compound). The molecules or molecules in the crystal are arranged periodically according to a certain law to form a lattice. Different crystals, such as daughter crystals, molecular crystals, atomic crystals, etc., because of their different particle forces, the melting boiling and hardness differences are obvious. The reaction of daughter crystals is caused by the combination of daughter, and the melting boiling is high; the molecular crystal depends on the molecular force, and the melting boiling phase is low.

This compound may have the following physical properties:
First, the color state or diversity. At room temperature, or in a solid state, its shape or crystalline, crystal clear, such as salt grains, sugar crystals, shining under light; or powder, delicate and smooth, soft to the touch. Or in a liquid state, the texture or clear like water, or thick like oil, with light and shadow changing between flows.
Second, the smell is different. Or it emits a rich fragrance, such as the fragrance of roses and the tranquility of jasmine, which can be used for fragrance; or it has a pungent smell, which makes people frown, such as the smell of some sulfides, which are mostly found in special chemical scenes.
Third, the solubility is different. In water, or easily soluble, such as salt, sucrose, the moment it enters the water, there is no shadow invisible, leaving only the salty and sweet feeling of the solution; or slightly soluble, it takes a long time to stir and melt slowly, and the solute is only less quantified in the water; or completely insoluble, in the state of water, such as oil floating on water, the boundaries are clear.
Fourth, the density is different. Compared with water, or greater than water, put into water, immediately sink to the bottom, like a stone falling into an abyss; or less than water, floating on the water surface, like a boat wave.
Fifth, the difference in melting point and boiling point. Those with a low melting point, when they encounter a little warmth, will be converted from solid to liquid, such as wax near a candle; those with a high melting point, need a hot fire to melt, like steel in a furnace. The boiling point is also the same, low boiling point, slightly hot at room temperature, will turn into a gaseous state, dissipation and formless; high boiling point, need to be heated multiple times before boiling gasification.
Sixth, the hardness is not the same. Or hard texture, such as diamond, can be scratched glass, all indestructible; or soft as cotton, hand can easily knead deformation, like clay.

This compound is widely used in organic synthesis.
First, it can be used as a key synthesis intermediate. In the construction process of many complex organic molecules, this compound can be skillfully converted into other organic compounds with specific structures and functions by means of specific reaction steps. For example, in the field of drug synthesis, using it as a starting material, through a series of carefully designed reactions, a drug molecular skeleton with specific pharmacological activities can be constructed. Through precise modification and transformation of its functional groups, a variety of different types of derivatives can be derived, providing a rich variety of options for drug research and development.
Second, it also has important applications in materials science. Because of its unique chemical structure and properties, it can participate in the synthesis of polymer materials. By polymerizing with other monomers, polymeric materials with special properties can be prepared. For example, giving materials better mechanical properties, thermal stability or optical properties. These materials with excellent properties play an indispensable role in many fields such as electronic devices, optical devices, and aerospace.
Third, this compound also shows unique value in the field of organic catalysis. It can be used as an organic catalyst to effectively promote various chemical reactions. Compared with traditional metal catalysts, it has many advantages such as environmental friendliness, ease of preparation, and high selectivity. It can catalyze a variety of important organic reactions such as esterification and addition reactions, providing an efficient and green catalytic strategy for organic synthesis.
Fourth, in the field of total synthesis of natural products, this compound often plays a key role. Many natural products with important biological activities have complex structures and are extremely difficult to synthesize. And this compound can be used as a key fragment, and through ingenious synthetic route design, it can be gradually spliced into complete natural product molecules. This is of great significance for in-depth research on the biological activities of natural products and the development of new drugs.

To make this compound, there are various methods, each with its own advantages and disadvantages, and varies depending on the nature of the compound.
One is the chemical synthesis method. With the corresponding raw materials, according to the principle of chemical reaction, the reaction conditions, such as temperature, pressure, catalyst, etc., are carefully prepared to make a specific reaction between the raw materials, and then the target compound is formed. The key to this method lies in a deep understanding of the reaction mechanism and precise control of the reaction conditions. For example, if you want to synthesize an organic compound, you can use various reactions of organic chemistry, such as substitution reaction, addition reaction, elimination reaction, etc. First, according to the structure of the target compound, design a reasonable reaction route, and then select the appropriate raw materials and reagents. However, this process often requires multiple reactions, and the yield and purity of each reaction will affect the final product. Some reaction conditions are harsh, which requires high equipment and may also produce many by-products, requiring complicated separation and purification steps.
The second is biosynthesis. With the help of the metabolic pathway of the organism, by culturing specific biological cells or microorganisms, and using the enzyme system in the body, simple substrates can be converted into target compounds. This method has the advantages of mild reaction conditions and high selectivity. For example, the use of microbial fermentation to produce certain antibiotics, amino acids, etc. As long as suitable medium and culture conditions are provided, microorganisms can synthesize the desired compounds according to their own metabolic mechanism. However, this method also has limitations. The biological system is complex, the culture process is easily contaminated by bacteria, and the separation and purification of the product is sometimes quite difficult, due to the complex composition of the organism.
The third is the extraction method of natural products. If the compound exists in natural resources, it can be extracted from natural raw materials such as plants, animals or minerals. First, the natural raw materials are pretreated, such as crushing, soaking, etc., and then the target compound is obtained by extraction, distillation, crystallization and other separation techniques. If the active ingredient is extracted from plants, different solvents are often used to extract the difference in solubility of the ingredients. The advantage of this method is that the raw materials are natural and the products may be more biologically active. However, natural resources are limited, extraction efficiency may be low, and it may have a certain impact on the environment, such as excessive collection of plants that may disrupt the ecological balance.