2,3-cyclopentenopyridine;6,7-dihydro-5h-cyclopenta(b)pyridine

2% 2C3 - carbon dioxide - 5H - alkane (b) - what is its use?, Imitate "Tiangong" to answer this question in classical Chinese format.

"Tiangong" is for application, and the main content of the text is. The following answers are as required:
What 2% 2C3 says about "alkane" and "burning" is the image of chemical energy and energy. Its combustion can be used to supply energy at the same cost. In the matter of cooking, it can be cooked for five years, so that the people can eat; in the case of metallurgy, it can be melted into gold tools, and it can help workers. And its fuel source can be used to warm people in the cold, in winter.
to 6% 2C7 involves carbon dioxide-5H, alkane (b) to its application. First, it can be used in chemical synthesis. With this raw material, it can be used as a kind of chemical compound, such as rubber, plastic, which can save people's lives, and plastic is widely used in daily use. Second, in the field of production, it can be used for this kind of material, which can help plant photosynthesis, promote its growth, and increase the amount of crops. Third, in the field of materials, or can be used for the research of new materials, making the materials special, or thin, used for construction, equipment, etc. After all, both of these are essential to people's livelihood, and both have their indispensable functions.

In the realm of wonderful things involved in the Taoist book "Tiangong Kaiwu", 2,3-cyclopentadiene is parallel to it; 6,7-dioxygen-5H-cyclopentadiene (b) to it, and the physical properties of the two are unique.
Let's talk about 2,3-cyclopentadiene first. Its shape is like a flexible spirit. At room temperature, it is a clear and flowing liquid, like the babbling stream in the mountains, clear and lively. Smell it, there is a unique fragrant smell, like a wisp of incense that inadvertently escapes from the depths of the forest. Its boiling point is about 41 ° C, just like the warmth that comes in an instant after the cold spring. With just a little heat, it turns into a curling light smoke and rises between heaven and earth. Because its molecular structure contains conjugated double bonds, such as closely connected chains, it is endowed with lively chemical properties, just like an active teenager, easy to participate in all kinds of wonderful chemical reactions, and plays an indispensable and important role in the stage of organic synthesis.
As for the 6,7-dioxy-5H-cyclopentane (b), it is often shown in a solid state, like a calm old man, standing quietly. Looking at its appearance, it is mostly delicate crystalline, and under the caress of light, it shines with crystal light, like twinkling stars in the night sky. Its melting point is at a specific value, just like the principle it adheres to. When it does not reach this temperature, it always maintains a solid state. When it comes to solubility, in some organic solvents, it will gradually dissipate like a spirit that quietly merges into the night, showing unique solubility characteristics. And because of its special molecular structure, it presents a completely different appearance from other substances in terms of physical and chemical properties, and has potential uses in many fields.

In the world of immortals, there are spiritual creatures called 2,3-cyclopentadienone, which is strong in nature and burns when exposed to fire, and when burned, the fire is fierce. There are also 6,7-dioxy-5H-cyclopentanofuran, which is also extraordinary.
2,3-cyclopentadienone, its unique structure, a system containing conjugated double bonds, this structure gives it special chemical properties. Because of its conjugate system, the electron cloud has good fluidity, so it has high reactivity. The flammability in case of fire is due to the energy distribution of the chemical bonds in the molecular structure, which makes it very easy to break and recombine the bonds under the excitation of external energy, which then triggers a violent oxidation reaction and burns.
As for 6,7-dioxo-5H-cyclopento (b) furan, its chemical properties are also closely related to the structure. The ring-like structure of this spirit and the existence of heteroatomic oxygen make its electron cloud distribution different from ordinary ones. Oxygen atoms have strong electronegativity and strong ability to attract electrons, resulting in uneven distribution of electron cloud density on the ring. This characteristic makes 6,7-dioxy-5H-cyclopentano (b) furan vulnerable to attack by electrophilic reagents or nucleophiles in chemical reactions. And due to factors such as ring tension, its reactivity cannot be underestimated. Under specific conditions, various chemical reactions such as ring opening and substitution can occur, showing unique chemical behaviors, providing different assistance and variables for cultivators in refining medicinal pills, forging magic weapons and many other matters.

To prepare 2,3-cyclopentenone and to it; 6,7-dioxy-5H-cyclopentenone and (b) to its compounds, there are many synthesis methods, and the following are the main ones.
First, it can be started from a specific olefin derivative. A suitable conjugated diolefin and a diene-friendly body are reacted by Diels-Alder to first construct an intermediate containing a specific double bond and ring system, and then through a series of ingenious steps such as oxidation and rearrangement, the functional group is precisely regulated to obtain the target 2,3-cyclopentenone structure. The key lies in the control of the reaction conditions of Diels-Alder, the choice of temperature and solvent has a great influence, and careful debugging is required to obtain products with high yield and selectivity.
Second, cyclopentane derivatives containing hydroxyl groups or halogen atoms are used as starting materials. First, the activity of hydroxyl groups or halogen atoms is used to gradually introduce double bonds through nucleophilic substitution, elimination and other classic reactions to construct a cyclopentene skeleton. Next, the substituents on the ring are oxidized or other functional groups are transformed to achieve the purpose of generating cyclopentenone. This path requires precise control of the reagents and conditions of each step of the reaction to avoid unnecessary side reactions, so as to ensure the high efficiency of the synthesis route.
Third, for 6,7-dioxo-5H-cyclopenteno (b) compounds, oxygen atoms can be introduced at suitable positions based on the synthesized cyclopentenone structure. It is often achieved by oxidation reaction, such as using a specific oxidant to selectively oxidize to a hydroxyl group at a specific position on the ring, and then further oxidize to a carbonyl group or construct a dioxy structure through a condensation reaction. In this process, the selection of oxidant and the selective control of the reaction check point are crucial, and the reaction needs to be guided in the target direction with the help of a suitable catalyst or guide group.
Fourth, the reaction can also be participated in by metal-organic reagents. Using the unique reactivity of metal-organic reagents, the coupling reaction occurs with suitable halogenated hydrocarbons or carbonyl compounds to realize the construction of carbon-carbon bonds and gradually piece together the complex structure of the target compound. This method requires attention to the preparation and preservation of metal-organic reagents, as well as the strict requirements of anhydrous and anaerobic conditions in the reaction, in order to smoothly advance the reaction.

I look at your words, and ask about the price range of di- and trivalent cycloalkanes and fire, and hexavalent and heptavalent carbon dioxide-5H naphthane (b) in the market. This matter involves a lot of strange doors, let me explain it in detail for you.
The ring structure of the two and trivalent cycloalkanes is special, the tension is quite large, and the properties are active. In case of fire, they will burn, like dry wood and torches, and flames will rise suddenly. And the structure of the six and heptavalent carbon dioxide-5H naphthane (b) is also exquisite, and the price in the market is difficult to determine.
However, to know its price range, we need to look at various factors. First, the thinness of the raw materials. If the raw materials are rare and difficult to harvest, the price will be high; if the raw materials are widely distributed, it will not be difficult to obtain, and the price may be slightly cheaper. Second, the difficulty of the production method. The production is difficult, labor-intensive and time-consuming, the cost will increase, and the price will also rise; the system is simple, twice the result with half the effort, and the price may stabilize. Third, the amount of market demand. If there are many people who want it, the price will increase; if there is a shortage of people who need it, the price will be reduced.
Although there is no conclusive price today, with common sense, the price of di- and trivalent cycloalkanes is slightly higher due to their active nature, difficulty in preparation or preparation, and limited use. If hexavalent dioxide-5H naphthane (b) is widely used and difficult to prepare, it is expensive; if the use is limited, the price may not be very high. However, the market conditions change, and the price is also variable, and the price range must be determined according to the real-time situation.