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What is the chemical structure of 3-Pyridinecarboxylic acid, 1, 2-dihydro-4-hydroxy-5, 6-dimethyl-2-oxo-, ethyl ester
The chemical structure of 3-pyridinecarboxylic acid, 1,2-dihydro-4-hydroxy-5,6-dimethyl-2-oxo-ethyl ester, according to the "Tiangong Kaiji", is deduced as follows.
In the name of this compound, "3-pyridinecarboxylic acid", it can be known that its core structure is a pyridine ring, and there is a carboxyl group attached to the pyridine ring at position 3. "Ethyl ester" indicates that the carboxyl group is esterified with ethanol to form an ester structure, namely -COOCH -2 CH.
"1,2-dihydro-4-hydroxy-5,6-dimethyl-2-oxo -" This part is modified for the pyridine ring. "1,2-dihydro" means that the double bonds at positions 1 and 2 of the pyridine ring are hydrogenated to become single bonds; "4-hydroxy" means that there is a hydroxy-OH at position 4 of the pyridine ring; "5,6-dimethyl" means that there is a methyl-CH at positions 5 and 6 of the pyridine ring; "2-oxo" indicates that position 2 after 1,2-dihydro exists as carbonyl = O.
Overall, its chemical structure is a 1,2-dihydropyridine ring as the parent nucleus, with a carbonyl group at position 2, a hydroxyl group at position 4, a methyl group at positions 5 and 6, respectively, and an ester group formed by carboxyl group at position 3 and ethanol. The atoms in this structure are linked by covalent bonds to form a specific spatial configuration, which conforms to the structural laws of organic compounds. In this way, the chemical structure of this compound is clear.
What are the physical properties of 3-Pyridinecarboxylic acid, 1, 2-dihydro-4-hydroxy-5, 6-dimethyl-2-oxo-, ethyl ester
This substance is named 1,2-dihydro-4-hydroxy-5,6-dimethyl-2-oxo-3-pyridinecarboxylate ethyl ester, and its physical properties are as follows:
This substance may be in the state of white to off-white crystalline powder. Looking at its shape, the powder is fine and uniform. Its melting point is within a specific range, which is an important indicator to distinguish its purity and characteristics. In terms of solubility, it may exhibit some solubility in organic solvents, such as ethanol, acetone, etc., but in water, its solubility may be relatively limited. This is because its molecular structure includes both a group of an organic solvent and a relatively hydrophobic part. Looking at its density, it may have a value similar to that of common organic compounds, and the density is stable, which is related to the intermolecular forces and accumulation methods. Its stability is acceptable under general conditions, but in case of extreme conditions such as high temperature and strong acid and alkali, the molecular structure may change. And the smell of this thing may have a weak special smell, which is not pungent, but it can be identified by a fine smell. Its various physical properties are closely related to its chemical structure, providing a basis for in-depth understanding of its properties, applications and follow-up research.
What is the main use of 3-Pyridinecarboxylic acid, 1, 2-dihydro-4-hydroxy-5, 6-dimethyl-2-oxo-, ethyl ester
3-Pyridinecarboxylic acid, 1,2-dihydro-4-hydroxy-5,6-dimethyl-2-oxo-ethyl ester, has a wide range of uses. In the field of medicine, it may be the key raw material for the creation of new drugs. Due to its specific structure or unique biological activity, it can act on specific targets in the body and has potential value in the treatment of certain diseases. In the field of organic synthesis, it is an important intermediate. With it, it can undergo various reactions to construct complex organic molecular structures, expand the variety of organic compounds, and help synthesize substances with special properties or functions. In the field of materials science, it may be able to participate in the preparation of new materials. Through specific chemical reactions, materials are endowed with unique physical and chemical properties, such as improving material stability, optical properties, etc., to meet the special needs of materials in different fields. This compound is of great significance in various scientific research and industrial production fields, and contributes unique power to promoting progress in related fields.
3-Pyridinecarboxylic acid, 1, 2-dihydro-4-hydroxy-5, 6-dimethyl-2-oxo-, ethyl ester
To prepare 3-pyridinecarboxylic acid, 1,2-dihydro-4-hydroxy-5,6-dimethyl-2-oxo-ethyl ester, there are various methods.
First, the corresponding pyridine derivative can be started. First, take a pyridine with a suitable substituent and modify it at a specific position under suitable reaction conditions. For example, using a pyridine containing a specific substituent as a raw material, under the action of a catalyst, a substitution reaction occurs at a specific position, and the desired group is introduced to gradually build the structure of the target molecule. In this process, the reaction temperature, reaction time and the ratio of reactants need to be carefully adjusted. If the temperature is too high, it may cause a cluster of side reactions and the product is impure; if the temperature is too low, the reaction rate will be slow and it will take a long time. The reaction time also needs to be accurately controlled. If it is too short, the reaction will not be completed, and if it is too long, it may cause the product to decompose. The misproportion of reactants will also affect the yield and product purity.
Second, another path can also be started. Use a different starting material and gradually synthesize it through multi-step reactions. First, the raw material undergoes a certain type of reaction to form a key intermediate. This intermediate is converted into another important intermediate product through subsequent reactions, and then through esterification and other reactions, the final target product is obtained. When esterification, it is crucial to choose suitable esterification reagents and catalysts. Commonly used esterification reagents and catalysts have their own characteristics and need to be adapted according to the raw materials and reaction conditions
Third, you can also refer to the synthesis methods of similar compounds for optimization and improvement. Draw on the experience of predecessors in the synthesis of similar structural compounds, adjust the reaction conditions and reagents to achieve the purpose of synthesizing this specific compound. However, no matter what method is used, each step of the reaction needs to be carefully monitored, and modern analytical methods, such as thin-layer chromatography, nuclear magnetic resonance, etc., can be used to understand the reaction process in real time to ensure the smooth synthesis and purity of the product.
3-Pyridinecarboxylic acid, 1, 2-dihydro-4-hydroxy-5, 6-dimethyl-2-oxo-, ethyl ester What are the precautions in storage and transportation
3-Pyridinecarboxylic acid, 1,2-dihydro-4-hydroxy-5,6-dimethyl-2-oxo-ethyl ester, there are many matters to be paid attention to when storing and transporting this compound.
First, storage is essential. Due to its nature or unstable state, it should be placed in a cool, dry and well ventilated place. Avoid open fires and hot topics to prevent danger. If the ambient humidity is too high, or it may be damp and deteriorate, affecting the quality; if the temperature is too high, it may accelerate its chemical reaction and damage its chemical structure and properties. Furthermore, it needs to be stored separately from oxidizing agents, acids, alkalis, etc., because it may react violently with them, resulting in adverse consequences.
Second, the care of transportation. During transportation, it is necessary to ensure that the container is well sealed to prevent leakage. If this compound leaks or pollutes the environment, it will also pose a hazard to transporters. When handling, it should be handled lightly and lightly, and it must not be operated brutally to avoid damage to packaging and containers. Transportation tools should be equipped with corresponding fire protection and leakage emergency treatment equipment for emergencies. In case of high temperature weather during transportation, effective cooling measures should be taken to ensure transportation safety. And transporters should be familiar with the characteristics of this compound and emergency treatment methods in order to deal with emergencies.