3-Thiophenezoic acid

3-Pentenedioic acid has a wide range of main uses. From the perspective of various things involved in "Tiangong Kaiwu", one or two of them can be known.
First, in the chemical industry, 3-pentenedioic acid is an important raw material for organic synthesis. It can be used to prepare various fine chemicals, such as some special polymers. Comparing with the ancient process, it is like using various raw materials to be crafted by craftsmen and finally become utensils. Today's chemical synthesis is based on 3-pentenedioic acid. After a series of reactions, polymeric materials with specific properties can be prepared. This polymeric material may have good flexibility and heat resistance, and is used in many industries, such as plastic products, fiber manufacturing, etc. Just like in ancient times, silk and linen were used as raw materials, through spinning, weaving and other processes, and finally became cloth and silk, which was used in clothing and other fields.
Second, in the field of pharmaceutical research and development, 3-pentenedioic acid also has potential value. Its structural characteristics may make it participate in the construction of some drug molecules. Just like ancient pharmacists used herbs to be compatible, 3-pentenedioic acid can be used as a blind "medicinal introduction" to help drug molecules achieve specific pharmacological activities. In modern medical research, it may be used to participate in the synthesis of drugs with antibacterial, anti-inflammatory and other effects to treat diseases and eliminate diseases.
Third, in the fragrance industry, 3-pentenedioic acid may contribute its power. Its derived compounds may have a unique aroma. Just like the ancient fragrance, it combines various fragrances to create a fragrance. Today's fragrance industry may be able to derive novel fragrance ingredients from 3-pentenedioic acid, which can be used in perfumes, cosmetics, etc., to add a pleasant fragrance.

3-Dibutyric acid is an important chemical compound. Its physical properties are very specific, as mentioned above.
First of all, 3-dibutyric acid is often a viscous liquid with a low color to a light color. This shape makes it easy to identify when it is combined with other substances. The reason why it is viscous is because of the molecular force. Molecules do not interact with each other, causing molecules to lead to each other, showing this special fluidity.
Furthermore, 3-dibutyric acid has solubility. Its ability to dissolve water in any ratio is important. In its molecules, the alkyl group (-OH) is water-based, and it is easy to form water molecules, so it can be well dispersed in water. Not only in water, but also in alcohols and other solvents. This solubility makes 3-butyric acid very useful in the chemical industry, chemical industry, and other fields.
times, the melting of 3-butyric acid also has its characteristics. The melting phase is low, and the boiling speed varies with the components. Low melting speed indicates that the molecular force is not low, and the molecules can be bundled into a lattice at low temperatures. The characteristics of boiling also affect its operation in the separation, extraction and other processes.
In addition, the density of 3-butyric acid is also worth mentioning. Its density is slightly higher than that of water, which makes it specific in the mixing system. In some operations involving liquid-liquid separation, the density difference is an important factor, which can be used to determine the effective separation of 3-butyric acid and other substances.
Therefore, the physical properties of 3-butyric acid, such as external properties, solubility, melting temperature, and density, together contribute to its specific physical properties, which lay the foundation for its use in different fields.

3-Hydroxybutyric acid is an organic compound. In the era of "Tiangong Kaiwu", it may not have been accurately recognized and described. However, in the style of ancient Chinese, it can be explained as follows according to its chemical properties.
3-Hydroxybutyric acid has the structural characteristics of carboxyl and hydroxyl groups. Its carboxyl group makes it acidic and can combine with alkali substances. If it meets sodium hydroxide, it is like the confrontation between acid and base. The two undergo a neutralization reaction to generate corresponding salts and water. This reaction is like a harmony of yin and yang, with acid and base coexisting to achieve a new chemical equilibrium.
The presence of its hydroxyl group gives the substance a different activity. Hydroxyl groups can participate in many chemical reactions, such as esterification reactions. When 3-hydroxybutyric acid and alcohols meet, under suitable catalytic conditions, the two are like dancers who attract each other. The hydroxyl group combines with the specific group of the alcohol to remove a molecule of water and form an ester compound. This process is like a delicate chemical dance, with each molecule in place and changing according to the laws of chemistry.
From the perspective of physical properties, 3-hydroxybutyric acid is soluble at room temperature and pressure, or in a liquid state. Because it contains polar groups, it may have a certain solubility in water, just like fish entering water, and some of them can be melted with water. And the existence of hydroxyl and carboxyl groups or hydrogen bonds between its molecules affects its melting point and other physical properties, making it different from ordinary hydrocarbons. The chemical properties of 3-hydroxybutyric acid are rich and diverse due to the synergistic effect of carboxyl and hydroxyl groups. On the stage of chemical reactions, it can exhibit many unique changes and expressions, participating in the construction of a complex chemical world.

The synthesis method of 3-pentenoic acid is an important content in the field of organic synthesis. To make 3-pentenoic acid, there are various methods.
First, it can be decarboxylated by β-ketoacid. First, a β-ketoacid with a specific structure is prepared. For example, ethyl acetoacetate is used as the starting material. After nucleophilic substitution reaction with halogenated hydrocarbons, a suitable hydrocarbon group is introduced, and then hydrolyzed under alkaline conditions, and then acidified to obtain the corresponding β-ketoacid. Finally, heating prompts the decarboxylation of β-ketoacid to obtain 3-pentenoic acid. This process requires fine control of the reaction conditions, such as temperature, pH, etc., to ensure that the reaction proceeds according to the expected path and improve the yield of the product.
Second, it is also feasible to use Wittig reaction. Select the appropriate aldehyde to react with the phosphorus ylide reagent. For example, propionaldehyde interacts with the phosphorus ylide reagent prepared from triphenylphosphine and halogenated hydrocarbons. This reaction condition is relatively mild and can be carried out in a more suitable environment. However, the purity of the reagent and the reaction operation requirements are quite high. It is necessary to ensure that the reaction system is anhydrous and oxygen-free, so as to avoid side reactions and affect the formation of 3-pentanoic acid.
Third, 3-pentenoic acid can be obtained by using butene dianhydride as raw material and partially reducing it. Butene dianhydride is partially reduced and converted by the action of a specific reducing agent. The key to this method is to precisely control the selection and dosage of the reducing agent, and the monitoring of the reaction process is also crucial in order to adjust the reaction process in a timely manner to achieve the best synthesis effect.
All synthesis methods have their own advantages and disadvantages. Careful choices should be made according to actual needs, such as raw material availability, cost considerations, product purity requirements, etc., in order to achieve the purpose of efficient synthesis of 3-pentenoic acid.

If you want to know the price range of 3-carboxylpropionic acid in the market, I will come to you in detail. However, the market situation is changeable, and the price is also changeable. You can only briefly describe the general situation according to the past.
In the past, the price of 3-carboxylpropionic acid varied according to the quality and the supply and demand of the market. If the quality is good and the market is prosperous, the price may be slightly higher; if the quality is normal and the supply exceeds the demand, the price may drop.
Generally speaking, the price of ordinary 3-carboxylpropionic acid ranges from a few dollars to tens of dollars per gram. However, this is not the exact number, and if the weather and personnel change, the price fluctuates greatly. In case of a good year, if the raw materials are sufficient and the production is large, the price may decline; in case of a disaster, if the raw materials are scarce and the production is not easy, the price may rise.
Also, the number of buyers is also related to the price. If the merchants compete for purchases, the demand is greater than the supply, and the price will rise; if the buyers are few, the supply exceeds the demand, and the price will fall.
And in different places, the price also varies. In prosperous cities, the transportation is convenient, and the goods are easy to collect, and the price may be relatively flat; in remote areas, the transportation is difficult, and the goods are difficult to reach, and the price may be slightly higher. < Br >
Therefore, if you want to know the exact price of 3-carboxylpropionic acid, you must also check the current market conditions and visit various businesses before you can obtain it. It must not be based on past prices, but on today's value.