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What is the chemical structure of Ethyl 3-methyl-1H-pyrrole-2-carboxylate?
Ethyl 3 - methyl - 1H - pyrrole - 2 - carboxylate, its chemical structure is also. This compound belongs to pyrrole derivatives, which are composed of pyrrole ring, methyl group, and carboxyl ethyl ester group.
The pyrrole ring is a five-membered nitrogen-containing heterocyclic ring with aromatic properties. The hydrogen on the nitrogen atom, that is, the one referred to by 1H, is easy to participate in the reaction. If there is methyl group or methyl group in the third position of the ring, the monocarbonyl group is also a non-polar group, which affects the physical and chemical properties of the molecule, such as solubility and boiling point.
The second position is connected with carboxyl ethyl ester group, and this structure is -COOCH -2 CH. In the carboxyl ethyl ester group, the carbonyl group (C = O) has a certain polarity and is electrophilic, and can undergo reactions such as nucleophilic addition; the oxygen atom of the ester group can form hydrogen bonds with other molecules, which affects the intermolecular forces.
In summary, the chemical structure of Ethyl 3-methyl-1H-pyrrole-2-carboxylate is unique, and each group affects each other, determining its physical, chemical properties and reactivity. It may have important uses in organic synthesis, medicinal chemistry and other fields.
What are the main uses of Ethyl 3-methyl-1H-pyrrole-2-carboxylate?
Ethyl 3 - methyl - 1H - pyrrole - 2 - carboxylate, Chinese name ethyl 3 - methyl - 1H - pyrrole - 2 - carboxylate, this substance is widely used and has important functions in many fields.
First, in the field of drug synthesis, it is often used as a key intermediate. The construction of many drug molecules depends on its participation. Using it as a starting material and through various chemical reactions, complex structures with specific biological activities can be constructed. Gaiinpyrrole ring is common in many drug active molecules. The structural properties of this compound enable it to introduce drug molecules, or affect the solubility, stability and biological activity of drugs, and help develop new drugs with high efficiency and low toxicity.
Second, in the field of materials science, it can also be used. It can participate in the preparation of polymer materials with special properties, such as conductive polymers or optically active materials. In polymerization reactions, it can be used as a monomer or modified group, endowing materials with unique electrical and optical properties, providing the possibility for the development of new functional materials, and may have extraordinary performance in optoelectronic devices, sensors and other fields.
Third, in the field of organic synthesis chemistry, it is an important synthetic building block. Chemists use various functional group transformations, such as esterification, amination, halogenation, etc., to expand the structural diversity of organic molecules and synthesize many complex and functional organic compounds, which contribute to the development of organic synthetic chemistry and promote the progress of academic research and practical applications in this field.
What are the synthetic methods of Ethyl 3-methyl-1H-pyrrole-2-carboxylate?
To prepare Ethyl 3 - methyl - 1H - pyrrole - 2 - carboxylate, various organic synthesis methods are often followed. First, it can be obtained by esterification of 3 - methyl pyrrole - 2 - carboxylate with ethanol. In this method, strong acids such as sulfuric acid are used as catalysts. Under heating conditions, the carboxylic group of the carboxylic acid and the hydroxyl group of the alcohol dehydrate and condensate to form this ester. During the reaction, attention should be paid to the control of temperature. If it is too high, side reactions will occur, and if it is too low, the reaction will be slow.
The ester was constructed by multi-step reaction with suitable nitrogen-containing heterocyclic compounds as starting materials. For example, a specific substituted pyrrole ring is prepared first, and then a carboxyl group is introduced into it at the second position, and then reacted with ethanol to form an ester. In each step of this process, the proportion of reactants and reaction conditions must be carefully considered to ensure the high efficiency of the reaction and the purity of the product.
Another example is the reaction involving organometallic reagents. The substrate containing methyl and pyrrole rings is complexed with the corresponding metal reagent, and then reacted with the reagent containing carboxyl ethyl ester structure. After a series of transformations, the final product is obtained. During this period, the activity of the metal reagent and the choice of the reaction solvent all have a huge impact on the reaction process and results.
The advantages and disadvantages of each method are mutually exclusive. The esterification method is simple in steps, but demanding on the reaction conditions; although the multi-step synthesis method is complicated, it can precisely regulate the product structure; the organometallic reagent method has unique reactivity and selectivity. Experimenters should carefully select the method and handle it carefully according to their own conditions, raw material availability and product requirements, in order to efficiently obtain this Ethyl 3-methyl-1H-pyrrole-2-carboxylate.
What are the physical properties of Ethyl 3-methyl-1H-pyrrole-2-carboxylate?
Ethyl 3 - methyl - 1H - pyrrole - 2 - carboxylate, Chinese name ethyl 3 - methyl - 1H - pyrrole - 2 - carboxylate. The physical properties of this substance, related to its appearance, melting point, solubility, density and other characteristics, are detailed as follows.
Looking at its appearance, it is often a colorless to light yellow liquid. Its color is light and clear, and it has a moist state. This color state is mostly caused by its molecular structure and the characteristics of light interaction.
As for the melting boiling point, the boiling point is about 230-232 ° C. At this time, the molecule is fully energized and can break free from the liquid phase and escape into the gas phase. The melting point is very low, and it is liquid at room temperature. This is because the intermolecular force is not strong enough to consolidate at room temperature.
In terms of solubility, it can be soluble in common organic solvents, such as ethanol, ether, chloroform, etc. Due to the principle of "similar phase dissolution", its molecules have a certain polarity and can form a moderate force with organic solvent molecules, so they are soluble. However, the solubility in water is very small, and there are few hydrophilic groups in its molecules, and the force between water molecules is weak, making it difficult to disperse in the aqueous phase.
The density is about 1.06 g/cm ³, which is slightly heavier than water. This density value is the result of the combined effect of molecular mass and the degree of close arrangement between molecules. Molecules contain atoms such as carbon, hydrogen, oxygen, and nitrogen, with a fixed mass and a specific density, resulting in their density.
In summary, the physical properties of ethyl 3-methyl-1H-pyrrole-2-carboxylate, such as color state, melting boiling point, solubility, and density, are determined by their molecular structure, and each property is related to each other, each has its own important significance in chemical applications.
What are the precautions for Ethyl 3-methyl-1H-pyrrole-2-carboxylate during storage and transportation?
Ethyl + 3 - methyl - 1H - pyrrole - 2 - carboxylate is an organic compound. When storing and transporting, there are indeed many precautions that need to be treated with caution.
First, when storing, be sure to keep it in a cool and dry place. This compound is susceptible to temperature and humidity. If the storage environment is warm and humid, it may cause chemical reactions, which in turn affects the quality. For example, if it is placed in a warehouse with high temperature and humidity in summer, it may decompose.
Second, it should be stored in a well-ventilated place. Because it may evaporate certain gases, good ventilation can prevent gas accumulation and reduce safety risks. If the storage space is closed, volatile gases or dangerous concentrations may cause accidents in case of open flames.
Third, keep away from fire sources and oxidants. This compound is flammable and easy to burn in case of fire sources, and oxidants will make its combustion reaction more violent. If mixed with oxidants during transportation, a little carelessness may cause fire or even explosion.
Fourth, ensure that the packaging is intact during transportation. Bumps and vibrations or damage to the packaging, causing the compound to leak. Once leaked, not only will it cause losses, but it may also pose a threat to the environment and personnel safety.
Fifth, relevant regulations and standards must be followed. Whether it is storage or transportation, it must comply with national and industry norms to ensure legal operation compliance and ensure the safety of all parties.