2,4-difluoro-3-iodo-Pyridine

2% 2C4-diene-3-carbonyl compounds are a crucial class of substances in organic synthesis chemistry, and their main uses cover the following aspects:
First, they play the role of key intermediates in the field of total synthesis of natural products. In the synthesis path of many complex natural products, 2% 2C4-diene-3-carbonyl compounds are often used as a key link in the construction of the core skeleton. For example, when synthesizing some terpene natural products, they can be introduced through specific reactions and then transformed in a series to gradually build the complete structure of the target natural product. This is because of its unique conjugated structure and carbonyl activity, which can participate in a variety of reactions and provide the possibility for the synthesis of complex structures.
Second, it also has important applications in the field of medicinal chemistry. Because of its structural properties, it can be used as a basic module for the design of drug molecules. Through structural modification and modification, drugs can be endowed with specific biological activities. For example, some drug molecules with antibacterial, anti-inflammatory and other activities are cleverly used in the design and synthesis of 2% 2C4-diene-3-carbonyl compounds to achieve effective combination with biological targets and exert pharmacological effects.
Third, in the field of materials science, has dabbled in. Polymer materials with special properties can be prepared by copolymerization with other monomers. For example, in some light-responsive materials, the structure of such compounds is introduced to endow the material with sensitivity to light, so as to realize the regulation of material properties.
Fourth, as an important substrate for organic reactions, it participates in many types of organic reactions. For example, the Diels-Alder reaction, with its conjugated diene structure, can undergo cyclic addition reaction with the dienophilic body to construct new carbon-carbon bonds and cyclic structures, providing an efficient strategy for organic synthesis; nucleophilic addition reaction can also occur. Carbonyl can react with various nucleophiles, further expanding the diversity of its structure and enriching the means of organic synthesis.

2% 2C4-diene-3-carbonyl compounds have a series of unique physical properties. Under normal temperature and pressure, they are mostly in a liquid or solid state. This depends on the intermolecular force and the specific structure of the molecule. When the intermolecular force is strong and the structure is closely arranged, it tends to be solid; if the intermolecular force is relatively weak and the structure is relatively loose, it is mostly liquid.
Such compounds usually have a certain degree of volatility. However, the volatility intensity will vary depending on the molecular structure. If the alkyl chain contained in the molecule is longer, the volatility is often low; conversely, if the molecular structure is relatively simple and the molecular weight is small, the volatility is relatively high.
In terms of solubility, 2% 2C4-diene-3-carbonyl compounds are generally soluble in organic solvents, such as ethanol, ether, chloroform, etc. This is due to the similarity between their molecular structures and organic solvents, following the principle of "similar phase dissolution". However, their solubility in water is usually poor, due to the relatively small molecular polarity of such compounds, which makes it difficult to form effective interactions with water molecules.
In terms of melting point and boiling point, the melting point and boiling point values are also closely related to the molecular structure. The stronger the intermolecular forces, such as the presence of special interactions such as hydrogen bonds, or the better molecular symmetry, the higher the melting point and boiling point. On the contrary, the intermolecular forces are weaker, the structure is more messy, and the melting point and boiling point are relatively low. These physical properties of such compounds have a crucial impact on their performance in various chemical reactions and practical applications, and are indispensable factors to consider when exploring the properties and applications of such compounds.

The synthesis method of 2% 2C4-diene-3-carbonyl is not specifically recorded in Tiangong Kaiwu, but it contains many chemical process ideas for reference.
If you want to make this thing, you can find traces from natural raw materials. As "Tiangong Kaiwu" often says, all kinds of plant and mineral raw materials. Or you can first take natural products rich in carbon, hydrogen and oxygen elements, and after refining and transformation, you can get similar structural fragments.
Taking vegetable oils as an example, the book records the preparation and application of oils. Oils are made of fatty acids and glycerol esters, and their fatty acid carbon chains may contain unsaturated bonds. Carbonyl groups are introduced through specific reactions or the position and quantity of double bonds can be adjusted. Or first hydrolyze the oil to obtain the fatty acid, and then oxidize the specific part of the fatty acid with an appropriate oxidant, such as some metal oxides or oxides mentioned in the book, at a suitable temperature and pH, to form a carbonyl group.
Mineral raw materials can also be used as a way. For example, metal-containing ores are smelted and purified to obtain catalytically active metals or metal compounds as reaction catalysts. By means of its catalytic action, the hydrocarbon-containing raw materials undergo reactions such as addition and oxidation to construct a 2% 2C4-diene-3-carbonyl structure.
The reaction conditions are also key. There are many records of heat and time control in the book. The synthesis of this compound may require precise temperature control, different reaction stages, or a specific temperature range. The heating rate also needs to be considered. If it is too fast or causes side reactions, if it is too slow, it will take a long time and the yield will be low. The reaction time also needs to be strictly controlled. If it is too short, the reaction will not be completed. If it is too long, it will cause the product to decompose or further react, and the target structure will be lost.
Also pay attention to the reaction medium. Water and organic solvents can be used as reaction sites. Choosing the appropriate solvent depends on the reaction rate and product purity. Or according to the solubility of raw materials and products and the reaction mechanism, the reaction will be carried out in the best environment.
Although the synthesis of this compound is not detailed in "Tiangong Kaiwu", its process concept, raw material application, and condition control wisdom provide ideas for the synthesis of 2% 2C4-diene-3-carbonyl, which can be effectively synthesized through modern scientific expansion and optimization.

In today's market, what is the price of 2,4-diene-3-carbonyl products? This is a business question, and it is necessary to investigate all the reasons in detail before we can get a more accurate price range.
The normal situation in Guanfu City, the price of various goods is always changing due to changes in texture, origin, luck, and supply and demand. If this 2,4-diene-3-carbonyl product is of high quality and famous, and it is suitable for the wide demand of the market, the demand is too high, and the price will be high. On the contrary, if the quality is average and the origin is ordinary, and the market demand is limited, and the supply exceeds the demand, the price will be lower.
Looking at the examples of various commercial matters under the present, the price of this 2,4-diene-3-carbonyl may be between a hundred gold and a thousand gold. If it is a refined product and involves rare and expensive uses, such as for the refining of various wonderful medicines and the synthesis of strange things, the price may be close to a thousand gold. If it is only a regular product, it is for general use, and the price may be around a hundred gold. However, these are all approximate numbers. In fact, in the city, it still needs to be changed in real time, such as the news of the goods, the amount, and even the business strategy of merchants. If you want to know the exact price, you must enter the market in person, carefully observe the price of the merchants, and take into account the reality, in order to obtain a more accurate value.

2% 2C4-diene-3-carbonyl compounds have important uses in many fields due to their special chemical structures and properties, and their storage conditions are very critical. Most of these compounds have active chemical properties, which require strict storage environments.
First, it needs to be stored in a low temperature environment. Generally speaking, the temperature should be controlled between -20 ° C and -80 ° C. Such low temperature conditions can effectively slow down the thermal movement of compound molecules and inhibit various chemical reactions that may cause their decomposition or deterioration. For example, at high temperatures, the double bonds in 2% 2C4-diene-3-carbonyl compounds may undergo polymerization reactions, resulting in changes in their structure and properties, while low temperatures can greatly reduce the probability of such reactions occurring.
Second, ensure that the storage environment is dry. Because it is extremely sensitive to moisture, the presence of water may promote reactions such as hydrolysis. Water molecules can react with carbonyl groups such as nucleophilic addition, destroying the original structure of the compound. Therefore, it should be stored in a dryer, or a desiccant should be added to maintain a dry environment.
Third, it needs to be stored in isolation from air. Oxygen in the air is oxidizing and may react with the compound to change its chemical structure. Usually, it can be filled with inert gas, such as nitrogen, to remove air, create an oxygen-free environment, and prevent the occurrence of oxidation reactions.
Fourth, the choice of storage containers cannot be ignored. Glass or plastic containers with good chemical stability should be selected, and the containers should be well sealed to avoid the compound from contacting the external environment and ensure the stability during storage. In this way, the quality and performance of 2% 2C4-diene-3-carbonyl compounds can be guaranteed to meet the needs of subsequent use.