M Xylene 4 Iodo 8ci

The Chinese name of "M-xylene, 4-iodo- (8ci) " is 4-iodine m-xylene.
m-xylene is one of the three isomers of xylene, and its two methyl groups are in the benzene ring interposition. In "M-xylene, 4-iodo- (8ci) ", "M-xylene" is m-xylene, "4-iodo-" means that the iodine atom is attached to the position where the benzene ring is relative to the methyl group at carbon No. 4, and " (8ci) " means that the naming is based on the rules of the Chemical Abstracts 8th Collective Index.
This substance is an organic compound, which can be used as an intermediate in the field of organic synthesis to prepare various organic materials and drugs with specific structures containing iodine. Its properties are determined by the benzene ring, methyl group and iodine atoms. The existence of methyl group and iodine atoms changes the electron cloud density distribution of the benzene ring, which in turn affects its reactivity and physicochemical properties.

4-Iodoxylene (M-xylene, 4-iodo- (8ci)) is an organic compound with various uses in the chemical industry and scientific research.
First, it is of great significance in the field of organic synthesis and is often used as a key intermediate. By virtue of the iodine atom and methyl group on the benzene ring, it can undergo a variety of chemical reactions, such as nucleophilic substitution reactions, and interact with many nucleophilic reagents, thereby introducing different functional groups to construct more complex organic molecules. These new molecules may be used to synthesize fine chemicals such as medicines and pesticides. For example, when creating new drugs, 4-iodoxylene can be converted into compounds containing specific pharmacoactive groups through specific reactions, thus laying the foundation for the development of new drugs.
Second, in the field of materials science, 4-iodine-m-xylene is also useful. After rational chemical modification and polymerization, it can be integrated into the structure of polymer materials. Due to the benzene ring structure endowing materials with certain rigidity and stability, iodine atoms and methyl groups may change the electrical and optical physical properties of materials, so 4-iodine-m-xylene may be used to prepare polymer materials with special properties, such as optoelectronic materials.
Third, 4-iodine-m-xylene is still an important reagent in chemical research. Researchers can use its unique chemical structure to further explore the chemical reaction mechanism and provide practical basis for the improvement and development of organic chemistry theory. By studying the various reactions they participate in, we can gain a better understanding of the conditions, selectivity, and laws of the reactions, and promote the continuous progress of organic chemistry.

4-Iodine m-xylene (M-xylene, 4-iodo- (8ci)) is an organic compound. Its physical properties are quite important, so let me explain in detail.
Looking at its appearance, under room temperature and pressure, 4-iodine m-xylene is mostly in a colorless to light yellow liquid state, which is easy to observe and identify. As for the smell, it often has a special aromatic smell, which can help to distinguish to a certain extent.
When it comes to boiling point, due to factors such as intermolecular forces, its boiling point is about a specific numerical range. This boiling point data is of great significance for separation, purification and application scenarios. The characteristics of the boiling point enable the transformation of the phase state of a substance under specific temperature conditions, which facilitates the separation and collection of the substance in chemical production.
The melting point is also affected by the molecular structure and interaction, and has a corresponding melting point value. The melting point determines the temperature at which a substance changes from a solid to a liquid state, which is crucial for the control of storage and transportation conditions. If the storage temperature is not appropriate, it may lead to changes in the phase state of the substance, affecting its quality and performance.
The density of 4-m-iodine xylene is also an important physical property. At different temperatures, the density will change accordingly, and its density has a specific numerical relationship compared with water. This relationship is crucial when it comes to operations such as liquid-liquid separation, and can provide a basis for practical operation.
Solubility is also one of the key properties. In common organic solvents, 4-iodine-m-xylene exhibits a certain solubility, which can be dissolved in organic solvents such as ethanol and ether, but has poor solubility in water. This solubility characteristic determines its dispersion and reaction in different systems, and has a deep impact on the conditions and methods of its participation in chemical reactions.
These physical properties are important factors in many fields such as organic synthesis and chemical production, laying the foundation for related operations and applications.

4-Iodine m-xylene (M-xylene, 4-iodo- (8ci)) is an organic compound with the following chemical properties:
1. ** Characteristics of halogenated aromatics **: The molecule contains iodine atoms and benzene ring structures. Due to the electron-absorbing induction effect of halogen atoms, the electron cloud density of the benzene ring is reduced, and the electrophilic substitution reaction activity is slightly lower than that of benzene. However, the benzene ring is still an electron-rich system, and many electrophilic substitution reactions can occur. For example, under the action of suitable catalysts such as iron or ferric chloride, it can undergo bromination reaction with bromine. The iodine atom is an ortho-para-site group, and the bromine atom will mainly replace the ortho-site of the iodine atom or the para-site hydrogen atom to generate the corresponding bro ** Methyl-related reactions **: The methyl group on m-xylene is affected by the benzene ring, and α-hydrogen has a certain activity. Under light or high temperature conditions, methyl groups can undergo free radical substitution reactions. If mixed with chlorine gas for light, chlorine atoms will replace hydrogen atoms on methyl groups to form chlorinated methyl m-xylene derivatives. Methyl groups can also be oxidized by strong oxidants. For example, under the action of acidic potassium permanganate solution, methyl groups can be oxidized to carboxyl groups. If both methyl groups are oxidized, the product is 4-iodoisophthalic acid.
3. ** Reaction of iodine atoms **: Iodine atoms can participate in nucleophilic substitution reactions. When encountering nucleophilic reagents such as sodium alcohol, ammonia, etc., iodine atoms can be replaced by nucleophilic reagents to form new For example, when reacting with sodium ethanol, iodine atoms are replaced by ethoxy groups to form ether compounds; when reacting with liquid ammonia, iodine atoms are replaced by amino groups to obtain m-xylene derivatives containing amino groups.
4. ** Stability and solubility **: 4-Iodine m-xylene has certain chemical stability and can exist stably at room temperature and pressure. However, in case of special chemical reagents such as strong oxidants, strong acids, and strong bases, or specific conditions such as high temperature and light, chemical reactions will occur. It is insoluble in water, because the molecule is non-polar or weakly polar, and the force between it and water molecules is weak; it is soluble in common organic solvents such as benzene, toluene, dichloromethane, ether, etc. Due to the principle of "similar phase dissolution", these organic solvents are similar to the intermolecular force of 4-iodine m-xylene and can be miscible with each other.

The method for preparing 4-iodine m-xylene (M-xylene, 4-iodo- (8ci)) is obtained by halogenation of m-xylene.
First take an appropriate amount of m-xylene and place it in the reactor. The kettle needs to be temperature and pressure resistant, and can be well stirred to make the reactants fully contact. Fill the kettle with a protective gas, such as nitrogen, to prevent the reaction of the reactants with impurities such as oxygen in the air.
Adjust the temperature of the reactor to an appropriate range, usually in the tens of degrees Celsius. Use iodine as a halogenating agent and add an appropriate amount. However, the activity of iodine is slightly less, so a catalyst is often required to promote the reaction. Iron or its halide can be used as a catalyst. When the catalyst is put into the kettle, it interacts with iodine to form an active intermediate, which makes iodine easier to react with m-xylene. When the benzene ring of m-xylene is reacted
, the methyl group is the ortho-para-localization group. Due to the steric hindrance and electronic effect, the iodine atom is mostly substituted in the para-position of the methyl group to obtain 4-iodine m-xylene.
After the reaction is completed, the product is mixed with the unreacted raw materials and catalysts. First, by distillation, according to the difference in the boiling point of each substance, most of the unreacted m-xylene is initially separated, and the recovery can be reused. The rest are extracted by extraction method, and a suitable organic solvent, such as dichloromethane, is selected to extract the product. The extract is dried to remove water, and then distilled to remove the solvent to obtain crude 4-m-iodine xylene.
To obtain high-purity products, recrystallization method can be used. Select an appropriate solvent, such as ethanol-water mixed solvent, add heat to dissolve the crude product, filter while hot to remove insoluble impurities, the filtrate is cooled and crystallized, filtered and dried to obtain high-purity 4-m-iodine xylene.