4-iodo-n,n-dimethylbenzamide

N, N-dimethylformamide is an organic compound with unique chemical properties. This substance is a colorless and transparent liquid at room temperature, with high polarity, and can be miscible with water and most organic solvents in any ratio.
Among its chemical properties, the key is its characteristics as an excellent solvent. Because of its high dielectric constant, it can effectively dissolve many organic and inorganic compounds, such as polymers, resins, dyes, etc., and is a commonly used solvent in organic synthesis, fiber manufacturing, medicine and other fields.
Furthermore, N, N-dimethylformamide has certain chemical activity. Its carbonyl group can participate in a variety of chemical reactions, such as addition reactions with nucleophiles. When exposed to acids or bases, there will be different reaction paths. Under acidic conditions, hydrolysis reactions may occur to form formic acid and dimethylamine; in alkaline environments, the reactions are more complex, or participate in nucleophilic substitution and other reactions.
In addition, the substance has certain stability and can be stored for a long time without significant chemical changes under normal conditions. However, under specific conditions such as high temperature and strong oxidants, reactions such as decomposition or oxidation can also occur.
Due to its unique chemical properties, N, N-dimethylformamide plays an indispensable role in chemical production and scientific research experiments, providing strong support for the smooth progress of many chemical reactions and industrial processes.

N, N -dimethylbenzyl ammonium chloride, also known as benzyl dimethylammonium chloride, is a white crystalline powder or colorless transparent colloid, which is easily deliquescent at room temperature, has good surface activity and bactericidal ability, and is a commonly used cationic surfactant. The preparation method is as follows:
* Using benzyl chloride and dimethylamine as raw materials **:
Benzyl chloride (C H CH ² Cl) and dimethylamine ((CH 🥰) -2 NH) are put into the reactor in a certain proportion, water or ethanol as a solvent, and an appropriate amount of alkaline substances such as sodium hydroxide (NaOH) are added as acid binding agents. At a suitable temperature, the chlorine atom in benzyl chloride is attacked by the nitrogen atom in the dimethylamine molecule, and a nucleophilic substitution reaction occurs. The reaction equation is: C H CH < unk > Cl + (CH < unk >) < unk > NH + NaOH → C H CH < unk > N (CH < unk >) < unk > HCl + NaCl + H < unk > O. After that, the solvent and unreacted raw materials are removed by means of reduced pressure distillation, and then the product is purified by recrystallization and other operations, and finally high purity N, N -dimethylbenzyl ammonium chloride can be obtained.
** Using benzaldehyde, dimethylamine and hydrochloric acid as raw materials **:
First, benzaldehyde (C H CHO) and dimethylamine undergo an addition reaction under certain conditions to generate the corresponding intermediate. The reaction formula is: C H CHO + (CH 🥰) O NH → C H CH (OH) N (CH 🥰) O. Then, the intermediate undergoes a chlorination reaction under the action of hydrochloric acid (HCl), and the hydroxyl group is replaced by a chlorine atom to finally generate N, N-dimethylbenzyl ammonium chloride. The reaction formula is: C H CH (OH) N (CH 🥰) ³ + HCl → C H CH ² N (CH 🥰) ³ · HCl + H 2O O. After the reaction, the reaction solution is concentrated, crystallized, and separated to obtain a pure product.
** Using toluene and dimethylamine as raw materials **:
Toluene (C H CH 🥰) first undergoes side-chain chlorination reaction with chlorine (Cl ²) under the action of light or initiator to generate benzyl chloride. The reaction formula is: C H CH 🥰 + Cl 🥰 $\ xrightarrow [] {light} $C H CH 🥰 Cl + HCl. The generated benzyl chloride is then reacted with dimethylamine according to the above nucleophilic substitution reaction steps to obtain N, N -dimethylbenzyl ammonium chloride. This method has relatively many steps, but the raw material toluene has a wide range of sources and low cost, which has certain industrial application value.

N, N-dimethylformamide (DMF) is a colorless and transparent liquid. It is a widely used chemical raw material and a solvent with excellent properties. It has important applications in many fields. The following are your descriptions:
1. ** Chemical synthesis field **: This is the key to the application of DMF. In the pharmaceutical chemical industry, it is often used as a reaction solvent to assist in the synthesis of drug intermediates. Like in the synthesis of antibiotics, vitamins and other drugs, DMF can dissolve many organic compounds and has stable chemical properties, creating a stable environment for the reaction and greatly improving the reaction efficiency. In the field of pesticide synthesis, DMF can promote the synthesis of active ingredients of various pesticides, such as common organophosphorus pesticides. In addition, in the synthesis of dyes, DMF can be used as a solvent to fully mix the reactants, allowing the reaction to proceed smoothly, thereby improving the quality and yield of dyes.
2. ** Electronics Industry **: With the rapid development of the electronics industry, the importance of DMF is increasing day by day. In the cleaning process of electronic circuit boards, it can efficiently dissolve oil, resin and other impurities, ensure that the circuit board is clean, and ensure the stable performance of electronic components. In the semiconductor manufacturing process, DMF is used for photoresist removal steps because of its strong dissolution ability to photoresist, accurate removal of excess photoresist, and will not cause corrosion damage to semiconductor materials, providing protection for the smooth progress of semiconductor manufacturing processes.
3. Fiber industry field: DMF plays an indispensable role in the production of synthetic fibers. Taking acrylic as an example, DMF can dissolve polyacrylonitrile and other polymers as a solvent. Through the wet spinning process, the polymer solution is extruded from the spinneret and solidified in the coagulation bath to form fibers. DMF has good polymer solubility and helps to form a uniform and stable solution, thus manufacturing high-quality and high-performance synthetic fibers. At the same time, in the production of high-performance fibers such as aramid, DMF is often involved as an important solvent.

In today's world, the trade is complicated, and the price of goods in the market is often changed due to many reasons. When it comes to N, N-dimethyl benzyl chloroacetamide, its market price is also subject to multi-end control.
First, the price of raw materials is one of the keys. To prepare N, N-dimethyl benzyl chloroacetamide, the price of all kinds of raw materials required, the price of which rises and falls, directly affects the production cost of this material. If raw materials are scarce, or their production is subject to changes in time, place, and government orders, the price will rise, and the price of N, N-dimethyl benzyl chloroacetamide will also rise.
Second, the coarseness of the craftsmanship is related to cost and quality. Good use of delicate techniques can improve productivity, reduce energy consumption and increase quality. Those who are high in art can get the best goods with less material, time and effort, and have the advantage of pricing in the city. And those who are poor in skills have high costs, and their prices may be difficult to compete with others.
Third, the supply and demand of the city also affect its price. If there are many people in the market who want N, N-dimethylbenzyl chloroacetamide, but there are few suppliers, the price will increase; if the supply exceeds the demand, merchants will reduce their prices in order to sell their goods quickly.
Fourth, political regulations and tax rates also have an impact. Strict regulations are set up by the government to ensure the safety and quality of this product and sales. Businesspeople must follow them or increase their costs. The increase or decrease in tax also goes directly into the cost and causes changes in price.
There are transportation costs, storage costs, etc., all of which are related to the price of N, N-dimethyl benzyl chloroacetamide. Therefore, in order to know the exact price, it is necessary to carefully consider the raw material prices, manufacturing conditions, supply and demand conditions, political and tax regulations, and transportation and storage costs at that time, so as to obtain a more accurate market price.

N, N-dimethylbenzyl chloroacetamide is an organic compound, and the specific storage conditions of this compound are not detailed in the general content of "Tiangong Kaiwu". However, according to the general method of storage of various things in ancient China and the characteristics of related chemical substances, it may be deduced.
This substance should be placed in a cool place. Due to high temperature, it may cause chemical reactions and accelerate deterioration. For example, ancient Tibetan medicine was often placed in a cool place such as a cellar to ensure its long-lasting effect. The same is true for this compound to avoid structural changes or decomposition due to heat.
It must be placed in a dry place. Many organic compounds are prone to hydrolysis or other reactions in contact with water. In the past, when storing grains, silk, etc., all attention was paid to moisture-proof, because moisture was easy to cause mildew and rot. If this compound is damp, or due to the action of water, it will cause hydrolysis and destroy its chemical structure, so a dry environment is necessary.
It should be stored in a closed container. It has a certain degree of volatility and may react with components such as oxygen in the air. In ancient times, the storage of fragrances was often in a sealed clay jar to prevent the aroma from escaping and oxidizing. This compound should also be stored in a closed container to prevent excessive contact with air and slow down the process of oxidation and volatilization.
Although the "Tiangong Kaiwu" does not specify the storage conditions of N, N-dimethylbenzyl chloroacetamide, according to the storage wisdom and chemical properties of the ancients, cool, dry and airtight are the important storage conditions, which can ensure that the material remains stable for a certain period of time and reduce the risk of deterioration.