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What is the chemical structure of N-diethyl-3-pyridinecarboxamide?
The chemical structure of N, N-diethyl-3-pyridineformamide is one of the structures of organic compounds. In this compound, the pyridine ring is its core structure, and the pyridine ring is a six-membered nitrogen-containing heterocycle, which is aromatic. In the third position of the pyridine ring, there is a formamide group. In this formamide group, the carbonyl group (C = O) is connected to the amino group (-NH-), showing the characteristics of the amide. The nitrogen atom of the amino group is connected to two ethyl groups (-C ² H), thus forming the structure of N, N-diethyl-3-pyridineformamide.
Looking at its structure, the pyridine ring endows it with certain stability and electronic properties, the formamide group affects its chemical activity and reaction check point, and the existence of diethyl group affects its solubility, steric resistance and other physical and chemical properties. This structure makes it useful in organic synthesis, medicinal chemistry and other fields, or has specific uses and reactivity.
What are the main uses of N-diethyl-3-pyridinecarboxamide?
N, N-diethyl-3-pyridyl formamide, this substance has a wide range of uses. In the field of medicine, it can be a key raw material for drug synthesis. The structure of Gainpyridine has good biological activity and drug potential. Through the modification of this substance, a variety of drugs with specific curative effects can be prepared, such as some drugs for the treatment of nervous system diseases. With its unique chemical properties, it may be able to regulate neurotransmitters and achieve therapeutic purposes.
In agriculture, it can be used as a pesticide adjuvant. Its special chemical structure can enhance the adhesion and penetration properties of pesticide active ingredients. When applied, pesticides can be spread more evenly on the surface of crops, enhancing absorption, improving efficacy, reducing pesticide dosage, and achieving environmental protection and economic effects. < Br >
In the industrial field, it also has its place. It is often used as an excellent organic solvent and has good solubility to many organic compounds. In the production of coatings and inks, it can adjust the viscosity, drying speed and other properties of the product to make the product quality better. In the synthesis of polymer materials, it can be used as a reaction medium to promote the smooth progress of polymerization reactions and improve material properties.
Because of its certain stability and reactivity, it is also a common reagent in organic synthesis chemistry experiments. Chemists can use it to participate in various reactions, build complex organic molecular structures, promote the development of organic synthesis chemistry, and lay the foundation for the research and development of new materials and new drugs.
What are the physical properties of N-diethyl-3-pyridinecarboxamide?
N, N-diethyl-3-pyridineformamide, this substance is in the state of a colorless to light yellow transparent liquid. It is pure and clear in appearance, like a clear spring. Its smell is specific, similar to the weak aroma, but it has an indescribable strange rhyme, which is comparable to the unusual aroma.
In terms of its melting and boiling point, the melting point is quite low, and it is difficult to condense into a solid state at room temperature, always maintaining a flexible liquid state. The boiling point is relatively high, and a considerable amount of heat is required to turn it into a gaseous state and rise. This property makes it stable in ordinary environments, and it is not easy to change its shape due to slight changes in temperature.
Its solubility is also unique. In organic solvents such as ethanol and ether, it can be blended at will, just like the water of fish, and the miscibility is excellent. However, in water, it is only slightly soluble, just like a reserved guest, and it is difficult to completely blend with water. This difference in solubility is closely related to the characteristics of its molecular structure.
As for the density, it is slightly smaller than water. If it is placed in one place with water, it floats lightly on the water surface, like a leaf floating on a wave, which is clearly recognizable. And because of its physical properties, it has extraordinary uses in many fields, or is a key raw material for organic synthesis, or plays an important role in some special reactions. It is a chemical substance that cannot be ignored.
What are the synthesis methods of N, N-diethyl-3-pyridinecarboxamide
To prepare N, N-diethyl-3-pyridineformamide, there are many methods. The common method can be started from 3-pyridineformic acid. First, 3-pyridineformic acid is co-heated with thionyl chloride, which is the step of acid chlorination. The activity of thionyl chloride is quite good, which can convert the carboxyl group into an acid chloride to obtain 3-pyridineformyl chloride. During the reaction, pay attention to the control of temperature, not too high, so as to avoid side reactions.
Then, mix 3-pyridineformyl chloride with diethylamine. The amino group of diethylamine is nucleophilic and can attack the carbonyl carbon of acyl chloride. After nucleophilic substitution, chloride ions are removed, and N, N-diethyl-3-pyridyl formamide is finally obtained. In this step of the reaction, the choice of solvent is very important, such as the use of dichloromethane and other inert solvents, which can make the reaction proceed smoothly. And the reaction environment should be weakly basic to neutralize the generated hydrogen chloride and promote the positive movement of the reaction.
There are other ways, which can start with 3-pyridyl formaldehyde. First oxidize it to 3-pyridyl carboxylic acid, an oxidation agent, and potassium permanganate can be selected. After 3-pyridinecarboxylic acid is obtained, the target product is prepared according to the above methods of acylation and nucleophilic substitution.
Or the reaction of 3-pyridinecarboxylate with diethylamine. Under suitable catalysts and conditions, the formonitrile group can undergo a series of reactions such as addition and hydrolysis with diethylamine to convert into N, N-diethyl-3-pyridinecarboxylamide. This process requires precise control of reaction conditions, such as temperature and catalyst dosage, to increase the yield and obtain a pure product.
N, N-diethyl-3-pyridinecarboxamide what are the precautions during use
For N, N-diethyl-3-pyridineformamide, all precautions need to be paid attention to in detail when using it. Although this medicine has specific effects, its nature also needs to be treated with caution.
First, it is related to the control of the dose. If you use too much, you may cause various adverse reactions, or damage your health; if you use too little, it will be difficult to achieve the expected effect. Therefore, you must follow the doctor's advice, use the medicine with precision, and you must not be good at increasing or decreasing it.
Second, when using the medicine, you should pay close attention to your own physical reactions. If you feel unwell, such as dizziness, nausea, rash, etc., you need to stop the medicine immediately and seek medical attention immediately. This may be an adverse reaction of the body to the medicine and should not be ignored.
Third, during the medication period, the living habits should also be adjusted. It is advisable to eat a light diet, avoid spicy and greasy things, so as not to be confused with the medicine and affect the efficacy of the medicine. And work and rest should be regular, do not stay up late to help the body recover.
Fourth, when using other medicines in combination, you need to be especially cautious. There may be interactions between different medicines, or side effects of increasing toxicity, or reducing the efficacy of the medicine. Therefore, if you need to use other medicines, you must first inform the doctor, and after their consideration, you can use them together.
Furthermore, the preservation of this medicine is also exquisite. When placed in a cool, dry place, avoid heat and light to prevent the drug from deteriorating and losing its effectiveness.
In short, the use of N, N-diethyl-3-pyridineformamide, all details are related to the safety and efficacy of the drug, and should not be careless.