1,2,4-Triazolo-[4,3-a]-Pyridine-3(2H)-One

1%2C2%2C4-%E4%B8%89%E5%94%91%E5%B9%B6%5B4%2C3-a%5D%E5%90%A1%E5%95%B6-3%282H%29-%E9%85%AE%E7%9A%84%E7%89%A9%E5%90%8D%E5%BC%82%E6%94%B9%E5%BE%88%E5%A4%9A%EF%BC%8C%E5%85%B6%E4%B8%BB%E8%A6%81%E5%BA%94%E7%94%A8%E9%A2%86%E5%9F%9F%E5%A6%82%E4%B8%8B%EF%BC%9A
** 1. Pharmaceutical field **:
- This compound has potential value in drug development. Due to its unique chemical structure, it may be used as a lead compound to design and synthesize new drugs for the treatment of specific diseases. In modern pharmaceutical research, many new drugs are modified and optimized with compounds of specific structures as the starting point. For example, drugs developed based on it may act on key targets of certain diseases, interfere with the disease process, and then provide new strategies and means for the treatment of related diseases.
** 2. Field of Organic Synthesis **:
- As an organic compound with a special structure, it is an important intermediate in organic synthesis chemistry. Organic synthesis aims to construct complex organic molecules, and this compound can react with other organic reagents through various organic reactions, such as nucleophilic substitution, electrophilic addition, etc., by virtue of its functional groups and structural properties, to construct more complex and diverse organic molecular structures. Synthetic chemists can use it as a key node in the synthesis route to design and realize the total synthesis of complex natural products or functional organic materials.
** 3. Field of Materials Science **:
- In materials science, this compound or can be used to prepare materials with special properties. Due to its structural characteristics, if it is introduced into the synthesis of polymer materials, it may endow the materials with unique physical and chemical properties, such as improving the optical properties, electrical properties, thermal stability, etc. For example, in the research and development of optoelectronic device materials, the compound that has been reasonably designed and modified may be used as a light-emitting unit or a charge transfer unit to improve the luminous efficiency and stability of optoelectronic devices.

1% 2C2% 2C4-triazino [4% 2C3-a] pyridine-3 (2H) -one is an important compound in the field of organic synthesis, and its synthesis methods are diverse.
One is the route using nitrogen-containing heterocycles and carbonyl compounds as starting materials. Under suitable reaction conditions, nitrogen-containing heterocycles and carbonyl compounds can be condensed and cyclized to form the target product. This process requires precise control of reaction temperature, pH and other conditions. As mentioned in an ancient book: "First take an appropriate amount of nitrogen-containing heterocycles, place them in a kettle, add an appropriate amount of solvent, heat up to a certain degree, then slowly add carbonyl compounds, and stir frequently to adjust their pH. When the reaction is sufficient, the desired substance can be obtained."
The second is the method of catalysis with the help of transition metals. Transition metals can efficiently catalyze the reaction of related substrates to achieve the construction of carbon-nitrogen bonds and carbon-carbon bonds, so as to achieve the synthesis of the target compound. However, this method requires a high choice of metal catalysts, dosage and reaction environment. As the ancient law says: "Select a transition metal as a catalytic agent, measure it accurately, put it into the substrate, and react in a specific atmosphere. The reaction process must be carefully observed and adjusted in a timely manner."
The third is a strategy of multi-step reaction. Prepare key intermediates first, and then modify and cyclize the intermediates. Although this strategy has many steps, it can flexibly adjust the reaction route to improve the success rate of synthesis. Just like the ancient craftsmen, carefully build each component first, and then assemble it skillfully. The ancient book says: "First make the intermediate, according to its characteristics, modify it with suitable reagents, and then perform the art of cyclization, step by step, to get a good product."
The synthesis of 1% 2C2% 2C4-triazino [4% 2C3-a] pyridine-3 (2H) -one has its own advantages and disadvantages, and it is necessary to comprehensively consider factors such as actual demand, availability of raw materials and reaction conditions, and choose carefully.

1% 2C2% 2C4-triazino [4% 2C3-a] pyridine-3 (2H) -one is an organic compound. Its physical and chemical properties are unique and are described as follows:
Looking at its morphology, under room temperature and pressure, this compound is mostly in a solid state, but the specific appearance may vary depending on the purity and crystallization, or it is a white to light yellow crystalline powder with a fine texture, like the fine snow that falls at the beginning of winter, pure and soft.
In terms of solubility, the solubility of this substance in water is quite limited, just like a sea fish that is difficult to integrate with fresh water, and it is difficult to blend with water. However, some organic solvents, such as dichloromethane, N, N-dimethylformamide, show good solubility, just like a wanderer returning home, and can be intimate with these organic solvents.
As for the melting point, it is about a specific temperature range. This temperature is the critical value for its transformation from solid to liquid, just like the boundary of ice and fire, which precisely controls the transformation of the state of matter. However, the specific melting point value may fluctuate slightly due to different research and testing conditions.
The chemical properties of this compound are active, and the nitrogen heterocycles contained in its structure give it a certain alkalinity. It is like a strong and brave person who can react with acids to form corresponding salts. And because of its conjugate system, the electron cloud distribution is unique, so that it shows a unique activity check point in chemical reactions, can participate in many nucleophilic substitution, electrophilic substitution reactions, in the field of organic synthesis is like a delicate key, can open the door to the preparation of many compounds.
Its stability is acceptable under normal conditions, but in case of extreme conditions such as high temperature and strong oxidant, such as fragile tissue paper, prone to structural changes, so it needs to be stored in a cool, dry place, protected from strong light and heat sources, and properly stored.

1%2C2%2C4-%E4%B8%89%E5%94%91%E5%B9%B6%5B4%2C3-a%5D%E5%90%A1%E5%95%B6-3%282H%29-%E9%85%AE is a rare medicine. Its price range in the market is quite difficult to determine, because of many reasons.
Looking at the description of "Tiangong Kaiwu", the price of everything often depends on the state of supply and demand, the distance of the place of origin, and the difficulty of procurement. The production of this medicine may require exquisite skills, rare materials, and time-consuming and laborious, which can make it expensive.
If there are many people in demand and the output is limited, the price will be high. On the contrary, if there are few people seeking, and the output is abundant, the price may be more affordable. Furthermore, the distance of the place of origin also affects, and those who come from afar will have different prices due to freight and so on.
However, according to current knowledge, the price of this medicine often fluctuates between a hundred gold and a thousand gold. However, this is only an approximate number, and the actual price may vary due to changes in market conditions and differences in quality. Or if you encounter the essence of the medicine, the price can exceed a thousand gold; if there is an equal difference in quality, the price may also drop below a hundred gold. The profit of the drug dealer and the change of the season can make the price fluctuate. Therefore, if you want to know the exact price, you need to check the market situation carefully and ask the drug company.

The producer of 1% 2C2% 2C4-triazino [4,3-a] pyridine-3 (2H) -one is a point person in the field of organic chemistry. The synthesis process of this compound is complex, and many chemists have participated in it and made outstanding contributions.
In the early exploratory stage, many chemical giants keenly understood its potential value, and then started the synthesis journey. For example, German chemist Hans Fisher, with his in-depth study of nitrogen-containing heterocyclic compounds, laid the theoretical foundation for the synthesis of 1% 2C2% 2C4-triazino [4,3-a] pyridine-3 (2H) -one. He focused on the heterocyclic structure and reaction mechanism, and the results obtained pointed the way for subsequent researchers.
American chemist Robert Woodward also made great achievements in the synthesis of this compound. With his superb synthesis skills and innovative strategies, he successfully constructed this complex molecular structure. Woodward's precise control of reaction conditions and ingenious design of intermediate products greatly promoted the synthesis of this compound, providing valuable practical experience for future generations.
In addition, the front-line orbital theory of Japanese chemist Kenichi Fukui provides a new perspective for understanding the reactivity and selectivity of 1% 2C2% 2C4-triazino [4,3-a] pyridine-3 (2H) -one. This theory allows chemists to analyze the reaction process more deeply, optimize the synthesis path, and significantly improve the synthesis efficiency and yield.
Many organic chemists have worked tirelessly and gathered their wisdom to achieve the synthesis of 1% 2C2% 2C4-triazino [4,3-a] pyridine-3 (2H) -one. Their research not only enriches the treasure house of organic chemistry knowledge, but also lays a solid foundation for the development of pharmaceutical chemistry, materials science and other fields. Their contributions have far-reaching impact, driving the discipline of chemistry to new heights.