Pyridine, 2,3,5-tribromo-

2,3,5-triazine-like compounds have a variety of unique chemical properties. Their nitrogen-containing heterocyclic structure endows these compounds with many characteristics.
In terms of stability, due to the existence of a conjugated system in the ring and the uniform distribution of electron clouds, the 2,3,5-triazine-like structures are relatively stable, and it is not easy to undergo violent reactions such as ring opening under general conditions. This stability allows these compounds to maintain structural integrity in many chemical reactions and practical application scenarios, such as in some reaction systems that need to withstand certain temperatures and pH environments, they can participate in the reaction as stable structural units.
From the perspective of reactivity, the nitrogen atom on the ring will attract electrons due to its large electronegativity, which will change the density distribution of the electron cloud on the ring, making the specific position appear electrophilic or nucleophilic. For example, in the nucleophilic substitution reaction, the ortho or para-carbon atom of the nitrogen atom is vulnerable to the attack of nucleophilic reagents due to the relatively low electron cloud density, and the substitution reaction occurs, and then various functional groups are introduced, providing the possibility for the synthesis of derivatives with rich structures.
2,3,5-triazine-like compounds also have certain coordination ability. Because nitrogen atoms have lone pair electrons, they can combine with metal ions through coordination bonds to form complexes. These complexes have excellent performance in the field of catalysis and can be used as high-efficiency catalysts to catalyze many organic reactions, showing unique catalytic activity and selectivity.
In addition, in terms of solubility, 2,3,5-triazine-like compounds vary due to the functional groups contained in the structure. If there are functional groups with higher polarity in the structure, such as hydroxyl groups, carboxyl groups, etc., it will enhance its solubility in polar solvents (such as water, alcohols, etc.); if the functional groups such as non-polar alkyl groups account for a large proportion, they are more soluble in non-polar or weakly polar organic solvents, such as benzene, toluene, etc. This solubility characteristic is conducive to the separation, purification and related chemical reactions in different solvent systems.

2,3,5 - Trijiao - is commonly used in various reactions, and is related to the reaction of human qi and water metabolism.
Trijiao is one of the six internal organs. Although it has no form and quality, it is of great use. In the physiological activities of the human body, the upper focus is like fog, the main thing is to spread Wei Qi, and the essence and body fluid of the water valley are dispersed. If the fog is dewy, it nourishes the whole body. The middle focus is like retting, the main decomposing water valley, and the transportation and refinement are the source of qi and blood biochemistry. Here, the water valley is decomposed and transported by the spleen and stomach, and turned into subtle and dross. The essence is slightly transported to the whole body, and the dross goes down. The lower coke is like blasphemy, the main secretion is clear and turbid, and the dross and urine are excreted, so that the water and dross go their own way.
In the disease reaction, the three coke is also often found. If the disease of the upper coke involves the heart and lungs, or fever, cough, chest tightness and other diseases, it is due to the poor qi machine of the upper coke, the loss of qi, and the abnormality of body fluid distribution. If the disease of the middle coke involves the spleen and stomach, the common abdominal distension, narcolepsy, diarrhea, etc., due to the ripening of the middle coke, the transportation and loss of food, and the water and gluten will not melt. If the disease of the lower coke is related to the liver, kidney and bladder, or the edema and two stool abnormalities are
In the compatibility of prescriptions, the theory of Sanjiao is also an important basis. Doctors often use prescriptions according to the disease location and pathogenesis of Sanjiao, in order to adjust Sanjiao's qi machine and restore the normal metabolism of water. Such as treating the disease of Shangjiao, often choose products that are light and clear; treating the disease of Zhongjiao, many drugs are used to strengthen the spleen and stomach, digest food and guide stagnation; treating the disease of lower Jiao, use agents that are moisturizing with water, nourishing the kidney and fixing astringency.
Therefore, 2,3,5-Sanjiao-has important uses in many reactions such as human physiological and pathological reactions and the compatibility and application of prescriptions, and is indispensable for doctors.

If you want to be in the army of two or three, there are three methods.
The first is the method of selecting talents. If you want to be in the army, you must first choose people. You should seek those who are firm and courageous, intelligent and agile. Observe their past actions, observe their state of being in the face of things. Those who are firm and determined will not be discouraged when they encounter obstacles; those who are wise should change without chaos. In the past, Wu chose soldiers, and those who could wear armor and hold halberds, and who could travel a hundred miles in the middle of the day were the best. If you choose this, you can lay the foundation for the army of two or three.
The second is the method of teaching. When you have obtained their people, you should teach them. Train the method of battle formation and teach the art of cooperation. Wu human performers of virtual idols need to clearly perform their duties and cooperate with each other. Like siblings, they should not make a slight mistake. Daily drills, from simple queues to complex tactics, repeated practice. Sun Wushu taught the Wu Palace beauty battle formation, although women can also prohibit it. Because of the law of teaching, the two and three can be coordinated as one.
Third, the law of dominance. Once the Wu has achieved it, there must be a ruler. The ruler needs both kindness and power. Kindness makes everyone's hearts attached and willing to serve; prestige makes everyone in awe and dare not disobey orders. Like Yue Fei's command of the army, he treats soldiers like children, and the military law is strict, so the Yue family army can be invincible. The ruler should have an insight into the feelings of the soldiers, know the needs of the soldiers, and solve the difficulties of the soldiers. In this way, the two and three of them can be united and become a strong force.
To control the two and three of them, the three methods of selecting talents, teaching, and controlling are indispensable. Selection is the foundation, teaching is the key, control is the key, and the program is clear. The two and three can become elites.

The physical properties of 2,3,5-triazine are generally special. The color of this material is often from yellow to yellow, and it is mostly in the form of solid in the world. However, some of them are also liquid.
As far as the melting pot is concerned, the melting pot of 2,3,5-triazine is different due to its molecular force and characteristics. Part of the melting pot is high, and a high degree of melting is required to make it melt; and the boiling pot is also high or low due to factors such as the size and stability of the molecule.
In terms of solubility, these substances are partially soluble in the solution pot, but the solubility in water depends on the group content of their molecules. If it contains water-based water, it has a certain solubility in water; if it is more hydrophobic, it is soluble in water.
Its chemical properties are also rich. 2,3,5-triazine-has a certain chemical activity, and the nitrogen atom on the nitrogen atom, due to the sub-cloud separation, can be generally reversed. It can be used for nuclear or nuclear reactions, such as generation and substitution, and many derivatives can be derived. This property makes it valuable for the synthetic field.
Furthermore, its qualitative also needs to be considered. Under general conditions, 2,3,5-triazine-has a certain degree of certainty. However, in case of acid, acid, or specific high temperature, light, etc., it can be transformed, induced, reversed, and its properties can be modified. Moreover, the physical properties of 2,3,5-triazine-are diverse, and its special functions are exhibited in different domains.

2, 3, 5 - Trijiao - Common application fields, in the theory of "Tiangong Kaiwu", can be described as follows.
The husband of trijiao, in the field of medicine, is the key. The Yellow Emperor's Nei Jing says: "Those who are trijiao, the official who will make a foul decision, and the waterway will go out." Doctors regard trijiao as the channel for the operation of human qi and water. The upper coke is like fog, the main thing is to spread the health qi, and the water valley is subtle, just like the water dew, nourishing the head and face orifices and the heart and lungs; the middle coke is like retting, the main rotting water valley, transforming into qi and blood, just like the retting food, making it change subtly, so as to nourish the whole body; the lower coke is like blasphemy, the main excretion of dross and urine, if the ditch is dredged, the turbidity will come out. Therefore, on the way to treating diseases and saving people, doctors often observe the changes of the three-jiao qi machine and the water fluid, so as to diagnose the disease and apply prescriptions.
Furthermore, in the world of health care, the three-jiao is also related. The way of health care is to reconcile the three-jiao. When people conform to the four times, adjust their emotions, adapt to work and relax, and save their diet, so Spring is suitable for nourishing the liver, helping to spread the hair of Shangjiao; Summer is suitable for nourishing the heart, smoothing the transportation and transformation of Zhongjiao; Autumn is suitable for nourishing the lungs, benefiting the Shangjiao and lowering; Winter is suitable for nourishing the kidneys, fixing the lower Jiao and sealing. And the mood is peaceful, do not overdo it, so as to avoid the inversion of the three-jiao gas machine. Moderate labor and rest, do not overwork, cause the three-jiao gas consumption; if you have a healthy diet, do not eat raw, cold and greasy, so as not to hurt the spleen and stomach of Zhongjiao and hinder the transportation and transformation of the three-jiao.
In terms of craftsmanship and production, although the three-jiao is not directly described, its principles are hidden. Such as the matter of smelting and casting, the control of the heat, the ratio of materials, and the order of the process, just like the three-jiao The power of the upper coke is comparable to the distribution and preparation of the initial processing of the material; the ability of the medium coke to decompose is like the melting change of the material in the furnace; the effect of the lower coke excretion is like the removal of the residual slag of the finished product. All need to be clear and orderly in order to become a tool.
In general, the principle of three cokes has far-reaching influence and wide application in many fields such as medicine, health care, and technology. It is the crystallization of the wisdom of the ancients, and future generations should study it carefully and make good use of it.