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What is the Chinese name for 1 - iodo - 2,4 - dimethylbenzene?
The Chinese name of 1-iodine-2,4-dimethylbenzene is 1-iodine-2,4-dimethylbenzene. This name depends on the name of the compound. "1-iodine" indicates that the iodine atom is located in the first position of benzene; "2,4-dimethyl" indicates that the methyl fraction is located in the second position of benzene.
The name of the compound is, the first weight is determined as the main or parent nucleus, and this benzene is the parent nucleus. The position, name and order of the substituent need to be clearly stated. The iodine-methyl group are all substituents, and according to their position on the benzene, they are named with the word phase.
The name of 1-iodine-2,4-dimethylbenzene can refine the quality of the compound, so that the name of the chemist will know its approximate production. It is very important in many aspects such as chemical research, industrial production, and communication, and can be guaranteed to avoid confusion.
What are the physical properties of 1 - iodo - 2,4 - dimethylbenzene?
1-Iodine-2,4-dimethylbenzene is one of the organic compounds. Its physical properties are very important and are related to many chemical and industrial uses.
Looking at its appearance, under normal temperature and pressure, 1-iodine-2,4-dimethylbenzene is often colorless to light yellow liquid, with clear quality and specific visual characteristics. The appearance of this liquid is easy to identify, and its state can be preliminarily judged in actual operation and observation.
The boiling point is about 230-232 ° C. The characteristics of the boiling point indicate that when the temperature rises to a specific value, the compound changes from liquid to gaseous state. This property is crucial in chemical operations such as distillation and separation, and can effectively separate it from others according to the difference in boiling point.
In terms of melting point, it is about -31 ° C. The melting point reveals the critical temperature at which it changes from solid to liquid. Knowing the melting point, when storing and transporting, it can be reasonably adjusted according to the ambient temperature to keep it in a suitable state, and prevent it from changing the phase state due to temperature changes and affecting the quality.
The density is about 1.49 g/cm ³, reflecting the mass per unit volume. This value is of great significance for chemical processes involving volume and mass conversion, such as solution preparation, reaction material measurement, etc. Accurate density data provide a reliable basis for experiments and production. < Br >
1-Iodine-2,4-dimethylbenzene is insoluble in water, but soluble in most organic solvents, such as ethanol, ether, acetone, etc. This solubility characteristic makes it easy to choose a suitable solvent to assist in the reaction in organic synthesis, or when the product is purified, the impurities are removed and the product is refined by the difference in solubility of different solvents.
It has a certain volatility and can evaporate slowly in air. This property should be noted when using and storing. Because its volatilization may cause concentration changes, and in some environments, volatile gaseous substances may pose safety risks, so it needs to be properly sealed and stored for good ventilation.
What are the chemical properties of 1 - iodo - 2,4 - dimethylbenzene?
1-Iodine-2,4-dimethylbenzene is one of the organic compounds. It has many chemical properties, which are described in detail below.
The first word is the nucleophilic substitution reaction. The iodine atom of this compound, because the electronegativity of iodine is different from that of carbon, makes the carbon-iodine bond polar, making the iodine atom vulnerable to nucleophilic attack. If an aqueous solution of sodium hydroxide is used as a nucleophilic reagent, when heated, the hydroxyl nucleophilic body can replace the iodine atom to produce 2,4-dimethylphenol. The reaction mechanism is that the nucleophilic reagent attacks the partially positively charged carbon atom connected to the iodine, and the iodine ion leaves to form a new carbon-oxygen < Br >
times and aromatic electrophilic substitution reaction. The benzene ring of this compound can increase the electron cloud density of the benzene ring because the methyl group is the donator, so that the benzene ring is more susceptible to electrophilic attack. Taking the bromination reaction as an example, under the action of catalysts such as iron tribromide, bromine positive ions are electrophilic and can attack the benzene ring. Due to the methyl localization effect, methyl is an ortho-and para-site locator, and the electron cloud density of the 3-position and 5-position of 2,4-dimethylbenzene is relatively high. Bromine is more likely to replace the hydrogen atoms in these two places to produce 1-iodine-3-bromo-2,4-dimethylbenzene or 1-iodine-5-bromo-2,4-dimethylbenzene.
There is a reduction reaction. Under the action of a suitable reducing agent, such as a mixed system of metal zinc and hydrochloric acid, the iodine atom of 1-iodine-2,4-dimethylbenzene can be reduced and removed to obtain 2,4-dimethylbenzene. This is due to the reaction between zinc and hydrochloric acid to generate new hydrogen atoms, which have strong reductivity and can reduce and break the carbon-iodine bond.
In addition, when 1-iodine-2,4-dimethylbenzene encounters strong oxidants, such as acidic potassium permanganate solution, the side chain methyl of the benzene ring can be oxidized. If conditions are suitable, methyl can be gradually oxidized to carboxyl groups, but the benzene ring itself is relatively stable under general oxidation conditions and is not easy to be destroyed.
What are the main uses of 1 - iodo - 2,4 - dimethylbenzene?
1-Iodine-2,4-dimethylbenzene is also an organic compound. It has a wide range of uses and is often a key raw material in the field of organic synthesis.
covers the industry of organic synthesis, and wants to make all kinds of complex organic molecules. 1-Iodine-2,4-dimethylbenzene can be used as the starting material. Because of its good atomic activity, iodine can be combined with other nucleophiles through many chemical reactions, such as nucleophilic substitution reactions, so that the molecular structure can be extended and modified, and then organic compounds with specific functions and structures can be constructed.
Furthermore, in the field of materials science, it can also be seen. Or it can be introduced into the structure of the polymer through a specific reaction path, giving the material new properties, such as improving the solubility and thermal stability of the material, etc., to contribute to the research and development of new materials.
In the field of medicinal chemistry, it also has its uses. When synthesizing drugs, or borrowing 1-iodine-2,4-dimethylbenzene as the basis, through a series of chemical transformations, to obtain biologically active drug molecules, or to provide assistance for the discovery and optimization of lead compounds, hoping to develop drugs with better efficacy and fewer side effects, and benefit patients.
All of these, 1-iodine-2,4-dimethylbenzene has important uses in organic synthesis, materials science, medicinal chemistry, and other fields, and is an indispensable compound in the field of organic chemistry.
What are the synthesis methods of 1 - iodo - 2,4 - dimethylbenzene?
There are many different ways to make 1-iodine-2,4-dimethylbenzene. One method can also start with 2,4-dimethylaniline. Shilling 2,4-dimethylaniline interacts with sodium nitrite and hydrochloric acid to obtain diazonium salts at low temperatures. This step requires careful control of temperature to prevent the decomposition of diazonium salts. After obtaining the diazonium salt, it is mixed with the potassium iodide solution. After the replacement reaction, the diazonium group is replaced by the iodine atom to obtain 1-iodine-2,4-dimethylbenzene.
Another method uses 2,4-dimethylbenzene as the substrate and first reacts with iodine and an appropriate amount of oxidant. Oxidants can assist in the substitution of iodine, such as hydrogen peroxide, concentrated sulfuric acid, etc. During the reaction, the reaction conditions, such as temperature and the proportion of reactants, are adjusted so that the iodine atom is selectively substituted in the first position of the benzene ring, and the target product can also be obtained.
In addition, 2,4-dimethylbromobenzene is used as a raw material to make it with sodium iodide in a suitable solvent, such as N, N-dimethylformamide, and the reaction is heated. The bromine atom is exchanged with the iodine ion to generate 1-iodine-2,4-dimethylbenzene. This reaction requires a good solvent to promote the reaction, and the polarity and boiling point of the solvent are all related to the reaction efficiency and All kinds of production methods have their own advantages and disadvantages. When implementing, the most suitable method should be selected according to the actual situation, such as the availability of raw materials, cost considerations, and product purity requirements.
