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What are the meanings of the parts in the chemical name of this product '6-Bromo-2,3-difluorobenzyl alcohol '?
"The chemical name of this product '6-bromo-2,3-divinylnaphthalene 'has the following meanings:
" 6-bromo ": The number" 6 "indicates the position where the bromine atom is attached to the naphthalene ring. The naphthalene ring is an aromatic hydrocarbon ring with a specific structure, numbered from a specific carbon atom of the naphthalene ring, and the bromine atom is attached to the carbon atom numbered" 6 ". Bromine is a chemical element. In organic compounds, the introduction of bromine atoms often changes the physical and chemical properties of the compound, such as affecting its polarity and reactivity.
"2,3-Divinyl": "2,3" represents the position where the vinyl is attached to the naphthalene ring, indicating that there are vinyl groups attached to the No. 2 and No. 3 carbon atoms of the naphthalene ring, respectively. "Two" indicates the number of vinyl groups is two. Vinyl is a group formed by removing one hydrogen atom from the ethylene molecule and is unsaturated, which makes the compounds containing vinyl groups have certain reactivity and can participate in a variety of chemical reactions, such as addition reactions.
"Naphthalene": Naphthalene is the parent structure of this compound. It is a fused ring aromatic hydrocarbon formed by the fusing of two styrene rings sharing two adjacent carbon atoms. The existence of naphthalene ring endows compounds with certain aromaticity and other characteristics, and naphthalene and its derivatives have a wide range of applications in the fields of organic synthesis and materials science. Overall, this naming method accurately describes the structure and composition of the compound according to the naming rules of organic chemistry, which is of great significance for researchers to understand its chemical properties and conduct related studies.
What are the physical properties of 6-bromo-2,3-difluorobenzyl alcohol
Carbon disulfide is a colorless, transparent liquid with a pungent odor. Its physical properties are quite unique, with a boiling point of about 46.5 ° C. It is volatile at room temperature and pressure, and it forms a gaseous state to disperse in the surrounding space. Its density is greater than that of water, about 1.26 g/cm ³. If carbon disulfide is mixed with water, it will sink to the bottom of the water.
Carbon disulfide is also unique in its solubility. It is insoluble in water, but it can be miscible with most organic solvents, such as ethanol and ether, in any ratio. This property makes it widely used in the chemical industry as an excellent solvent, capable of dissolving many substances such as sulfur, phosphorus, grease, and some natural resins, synthetic rubber, etc.
In addition, carbon disulfide is highly flammable. When ignited in the air, it will burn violently, generating carbon dioxide and sulfur dioxide. Its steam and air can form an explosive mixture, which can cause combustion and explosion in case of open flame and high heat, which is extremely dangerous. And carbon disulfide vapor is heavier than air and can spread at a lower place to a considerable distance. In case of ignition, it will ignite and backfire. Because of its physical properties, it is necessary to strictly follow safety procedures when storing and using carbon disulfide to prevent fire and explosion accidents.
What are the chemical properties of 6-bromo-2,3-difluorobenzyl alcohol
Di- naphthalene methyl ether, its chemical properties are very special. This substance exhibits a certain degree of characterization. Under normal conditions, it can maintain its own chemical properties for a period of time.
In terms of reactivity, the methoxy group (-OCH) in di- naphthalene methyl ether has an increase in the molecular density of benzene, which makes it easier to replace and react. For example, under suitable conditions, it can be substituted and reacted with elements, nitrogenation, etc., and the substitution position is mostly in the methoxy position.
In addition, the naphthalene part in the molecule of naphthalene methyl ether has a certain aromaticity, which gives it a certain antioxidant property. Compared with some naphthalene and naphthalene compounds, its properties in the oxidation environment are higher. However, if it encounters oxidation, naphthalene may also be broken, resulting in oxidation reaction, resulting in molecular modification.
In terms of solubility, naphthalene methyl ether is soluble in water, mainly due to the non-solubility of its molecules, and water is soluble. According to the principle of "similar miscibility", the two are miscible. However, it is soluble in many soluble molecules, such as ether, chloroform, benzene, etc., and its properties have important application values in the synthesis and extraction operations.
Under additive conditions, dinaphthalene methyl ether may generate rearrangements of some molecules, generating different but identical molecules. This synthesis provides more possibilities. In addition, the chemical properties of dinaphthalene methyl ether make it have an undeniable role in the chemical field.
What are the main uses of 6-bromo-2,3-difluorobenzyl alcohol?
The second is the compatibility of the common materials in the Chinese recipe. Its main purpose is to use the wide range of materials, let me explain it to you.
The reason is to strengthen the spleen, and the effect is outstanding. As the "Materia Medica Mengyuan" says: "The spleen needs to be improved, and the phlegm is eliminated. The compatibility of the spleen and the nail can help the spleen to be transformed, and the action is not correct." The spleen and stomach are the foundation of the sky. If the spleen and stomach are lost, the disease will be born. This compatibility can make the spleen and stomach function well, and help the digestion and absorption of water and valleys. For those who are weak and weak in the spleen and stomach, such as eating less, abdominal pain and other diseases, there is an improvement effect.
In terms of dryness and water benefits, it also has a good ability. "God's Materia Medica": "The main thing is cold paralysis, dead muscles, jaundice, antiperspiration, and digestion." The combination of the nail and the nail can increase the power of dryness, so as to remove the water that people have stopped gathering. If the water is stopped and the water is caused by water and excretion, this compatibility can promote the excretion of the water, so that the water and liquid can be restored to normal.
In addition, its pain relief is also helpful. The "Materia Medica" and the relative material mentioned that it can treat "cold abdominal pain". The evil guest of the cold is easy to cause the pain and prevent the pain. The compatibility of the second nail can be used to relieve dryness, dissipate cold and relieve pain, and relieve abdominal pain, pain and other diseases caused by cold, which can play a certain role in the solution.
Of course, the second nail can be used in the management of spleen, dryness and water, pain relief, etc., and each shows its own characteristics, and is the same with each other. It is used in the middle of the bed. It is the common compatibility of the function of the viscera, the function of the viscera, and the removal of evil and the support of the upright.
What are the synthesis methods of 6-bromo-2,3-difluorobenzyl alcohol
To make dibromoethane, there are several methods as follows:
First, ethylene is added with bromine water. Ethylene, carbon-containing double bond, has active properties. Ethylene is introduced into bromine water, one of the double bonds is broken, and the bromine atom is connected to the two carbon atoms, which is an addition reaction. The reaction formula is: $CH_ {2} = CH_ {2} + Br_ {2}\ longrightarrow CH_ {2} BrCH_ {2} Br $. This method has mild reaction conditions, relatively simple operation, and relatively pure products. It is a commonly used method.
Second, ethane can be substituted with bromine vapor under light conditions to form bromoethane, and then bromoethane can be eliminated in sodium hydroxide alcohol solution and heating conditions to produce ethylene. Ethylene is then added with bromine water to obtain dibromoethane. However, when ethane reacts with bromine vapor, the product is complicated. In addition to bromine ethane, various by-products such as dibromoethane and tribromoethane will be generated, which is quite cumbersome to separate and purify.
Third, using acetylene as a raw material, ethylene is first partially added with hydrogen to generate ethylene, and then ethylene is added with bromine water to obtain dibromoethane. However, when adding acetylene to hydrogen, it is necessary to precisely control the amount of hydrogen, otherwise it is easy to over-add to generate ethane, and the preparation of acetylene requires calcium carbide to react with water, which is more expensive.
In contrast, the addition of ethylene and bromine water to prepare dibromoethane is the most suitable, the reaction is easy to control, and the product purity is high, which is more in line with the needs of actual production.
