1 2 3 Trifluoro 4 Iodobenzene

1,2,3-Tribromo-4-iodobenzene is a highly toxic substance, and its main use is rarely seen in the right path, and it involves many evil paths.
In the theory of "Tiangong Kaiwu", all the products in the world should be used for the benefit of people's livelihood and the advancement of skills. However, 1,2,3-tribromo-4-iodobenzene is not a good material for enhancing people's livelihood and promoting the skills of hundreds of workers. It may occasionally appear in some unconventional chemical experiments and illegal synthesis methods.
Gu Yun: "A gentleman loves money, and there is a way to take it." If in order to make money, 1, 2, 3-tribromo-4-iodobenzene is involved in illegal activities, such as the dark road of drug production and drug trafficking, it is really self-destructive and harmful to the world. "Tiangong Kaiwu" also advocates making the best use of things to benefit the people of the family and the country. Such poisons should not be sold or abused wantonly.
Viewing the world, those who are right will use products to promote agriculture and mulberry, strengthen hundreds of industries, and facilitate commerce, so that all people can live and work in peace and contentment. And 1,2,3-tribromo-4-iodobenzene, if you go astray, will lead to countless disasters, go against the advice of the sages, and go against the right path. Therefore, although it is a thing, it should be strictly controlled and controlled, and the source of its chaos should be eliminated.

1%2C2%2C3-%E4%B8%89%E6%B0%9F-4-%E7%A2%98%E8%8B%AF, it is also a good product in medicine. Its physical properties are special and have many wonders.
Looking at its shape, under room temperature, it is mostly crystal clear, just like pearl jade. Its texture may be solid, but there is no lack of flexibility, and it can be shaped at will, just like a wise man can bend and stretch freely. Its color is often pure, or white like snow, or transparent like ice, giving people a sense of purity and flawlessness, as if it had not been stained by the world.
As for its smell, it is often not pungent, but has a faint fragrance, such as a deep mountain orchid, which inadvertently refreshes the heart and calms the mind, as if in a quiet place.
When it comes to touch, the tentacles are warm and moist, neither cold nor hot, just like a blind date with the skin. Its surface may be smooth and delicate, as soft as silk satin, and when it is rubbed, there is no sense of obstruction; or it has a little texture, but it is also just right, like a natural ornament, with a unique charm.
Furthermore, its solubility is also wonderful. In some specific liquids, it can be quietly integrated into it, as if invisible, but it can also give the liquid its unique properties. This characteristic makes it exist in a variety of forms, either as a solid state, as stable as a rock; or as a liquid state, as smart as water, all of which can exert its unique effects.
The physical properties, shape, color, smell, touch and solubility of 1%2C2%2C3-%E4%B8%89%E6%B0%9F-4-%E7%A2%98%E8%8B%AF are all its unique charm, which is the treasure of heaven and earth creation. It is used in many fields such as medicine and health care.

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1%2C2%2C3-%E4%B8%89%E6%B0%9F-4-%E7%A2%98%E8%8B%AF%E4%B8%8E%E9%85%B8%E5%8F%8D%E5%BA%94%EF%BC%8C%E5%8F%AF%E7%94%9F%E6%88%90%E7%9B%B8%E5%BA%94%E7%9A%84%E9%85%B8%E7%9B%90%E5%92%8C%E6%B0%B4%E3%80%82%E5%9C%A8%E7%A2%B1%E6%80%A7%E7%8E%AF%E5%A2%83%E4%B8%AD%EF%BC%8C%E5%85%B6%E4%B8%8E%E7%A2%B1%E5%8F%8D%E5%BA%94%EF%BC%8C%E7%94%9F%E6%88%90%E7%9B%B8%E5%BA%94%E7%9A%84%E7%A2%B1%E7%9B%90%E5%92%8C%E6%B0%B4%E3%80%82%E6%9B%B4%E5%A4%9A%E6%97%B6%E5%80%99%EF%BC%8C1%2C2%2C3-%E4%B8%89%E6%B0%9F-4-%E7%A2%98%E8%8B%AF%E5%9C%A8%E6%B0%B4%E4%B8%AD%E5%87%BA%E7%8E%B0%E5%87%BA%E7%A1%AE%E5%AE%9A%E7%9A%84%E5%8C%96%E5%AD%A6%E6%80%A7%E8%B4%A8%EF%BC%8C%E4%B8%8D%E6%98%AF%E6%98%AF%E7%A1%AE%E5%AE%9A%E7%9A%84%E7%8E%B0%E8%B1%A1%E3%80%82
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The synthesis method of 1,2,3-tribromo-4-iodobenzene is not directly described in the ancient book "Tiangong Kaiwu", but the chemical method of the ancients can be used for reference. Today, in ancient Chinese, the possible method is described.
First, it can start from benzene. Benzene, a cyclic hydrocarbon, has relatively stable properties. First, brominate it. To obtain 1,2,3-tribromobenzene, it is necessary to make good use of brominating reagents and conditions. Can make benzene and liquid bromine, with iron filings as a catalyst, react at an appropriate temperature. Bromine and benzene are electrophilic substituted to obtain monobromobenzene first, and then control the conditions to continue brominating monobromobenzene to obtain dibromobenzene, and then tribrominate. In this process, the temperature, reagent ratio, and reaction time all need to be carefully regulated. Due to the positioning effect of bromine, bromine atoms are gradually introduced into specific positions in the benzene ring to achieve the formation of 1,2,3-tribromobenzene.
After obtaining 1,2,3-tribromobenzene, if you want to introduce iodine atoms into 1,2,3-tribromo-4-iodobenzene, you can use the substitution reaction of halogen atoms. React with a suitable iodine substitution reagent, such as potassium iodide, with a suitable oxidizing agent, or with iodine elemental substance under the action of a special catalyst, with 1,2,3-tribromobenzene. Due to the presence of bromine atoms on the benzene ring and the change in the distribution of its electron cloud, iodine atoms can selectively replace hydrogen at specific positions. After many attempts and optimization of conditions, the synthesis of 1,2,3-tribromo-4-iodobenzene can be achieved.
Second, iodine-containing benzene ring derivatives can be constructed first, and then brominated. For example, iodobenzene is used as the starting material, and a suitable substituent is introduced into the benzene ring through a specific reaction to activate or passivate the benzene ring to guide the positioning of subsequent bromine atoms. After that, a bromination reaction is carried out, and three bromine atoms are gradually introduced at the desired position, and finally 1,2,3-tribromo-4-iodobenzene is obtained. The key to this approach lies in the control of the reaction conditions at each step, as well as the deep understanding of the electronic effect of benzene ring and the positioning rules, so that the reaction proceeds in the expected direction and the target product is obtained.

1%2C2%2C3-%E4%B8%89%E6%B0%9F-4-%E7%A2%98%E8%8B%AF%E5%9C%A8%E5%82%A8%E5%AD%98%E5%92%8C%E8%BF%90%E8%BE%93%E8%BF%87%E7%A8%8B%E4%B8%AD%E5%BD%93%E6%B3%A8%E6%84%8F%E4%B8%8B%E5%88%97%E4%BA%8B%E9%A1%B9:
First, this medicine should be placed in a cool and dry place to avoid direct sunlight. If it is exposed to the sun, or the drug-causing mutation, it will lose its effectiveness. And when it is moisture-proof and wet, it is easy to produce mildew rot and damage the quality of the medicine.
Second, when handling, it must be handled with care. This medicine is not a solid thing. If it falls and collides, it may break, causing uneven drug power and affecting the curative effect.
Furthermore, the storage device should also be suitable. A sealed container should be used to prevent it from contacting with outside air, water vapor, etc., causing changes in ingredients. And the material of the container is improper to chemically react with the medicine, so as not to destroy the medicinal properties.
Fourth, during the storage period, when strict compliance with the standard. Overdue drugs, although the appearance or no major changes, but the medicinal power or has declined, or even harmful things, can not be reused.
Fifth, different drugs have different habits, 1%2C2%2C3-%E4%B8%89%E6%B0%9F-4-%E7%A2%98%E8%8B%AF can not be stored and transported with the taboo drugs, prevent interaction, produce adverse changes.
At the end, personnel operation is also important, contact with this medicine, when the hands clean, free of contamination of the drug quality, and familiar with the law of storage and transportation, in accordance with the rules, can be 1%2C2%2C3-%E4%B8%89%E6%B0%9F-4-%E7%A2%98%E8%8B%AF in storage, transportation quality and efficiency.