3,6-Di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4-dione

3,6-Bis (pyridine-2-yl) pyridino [3,4-c] pyridine-1,4-dione has many main application fields. It is often used as an organic optoelectronic material in the field of materials science. Due to its special molecular structure, it has good electron transport and optical properties. It can improve the luminous efficiency and photoelectric conversion efficiency of devices in the preparation of organic Light Emitting Diodes (OLEDs) and organic solar cells.
In the field of coordination chemistry, it can be used as a ligand to coordinate with a variety of metal ions to form complexes with diverse structures. Such complexes exhibit unique properties and application potential in catalysis, fluorescence sensing and molecular recognition. For example, some complexes can be used as efficient catalysts to accelerate the process of specific chemical reactions; others can be used to detect specific pollutants or biomolecules in the environment with the ability to selectively identify specific molecules.
In the field of pharmaceutical chemistry, it also has potential application value. Studies have found that compounds containing such structures may have certain affinity and biological activity to biological targets related to certain diseases, providing possible lead compound structures for the development of new drugs, and promising to develop innovative drugs for the treatment of specific diseases.

3% 2C6-bis (tert-butyl-2-yl) pyridino [3,4-c] pyridino-1,4-dione is an important compound in organic synthesis. Although its synthesis method is not directly recorded in Tiangong Kaiji, it can be described in ancient Chinese in combination with traditional organic synthesis ideas as follows:
To synthesize this compound, the starting material selection is the key. Pyridine derivatives can be taken first, which are structurally stable and easy to modify. In a subtle way, tert-butyl-2-yl is introduced at a specific position of the pyridine ring, that is, at the 3 and 6 positions. This step requires suitable reagents and mild conditions to avoid damaging the inherent structure of the pyridine ring. For example, tert-butyl halide is used as the reagent for introducing the group. Under the catalysis of a base, the tert-butyl-2-group is connected to the pyridine ring through a nucleophilic substitution reaction.
Then, the fused ring structure of pyrido [3,4-c] pyridine is constructed. Intramolecular cyclization reactions can be used to cleverly design specific parts of pyridine derivatives to interact with each other to form the desired fused ring. This process requires precise control of the reaction temperature, time and ratio of reactants. For example, in an appropriate organic solvent, a specific catalyst is added to make the active check points in the molecule close to each other, and a cyclization reaction occurs to gradually build a fused ring framework.
As for the formation of 1,4-dione, the constructed thick ring structure can be oxidized or acylated in subsequent steps. For example, with a suitable oxidizing agent, the carbon-hydrogen bond at a specific position is oxidized to a carbonyl group, or an acyl group is introduced through an acylating agent, and a diketone structure is generated by hydrolysis.
The whole process of synthesis requires strict adherence to the specifications of operation and subtle changes in the reaction. Each step requires careful observation and precise regulation to obtain the product of 3% 2C6-bis (tert-butyl-2-yl) pyrido [3,4-c] pyridine-1,4-dione.

3% 2C6-di (tert-butyl-2-yl) pyridino [3,4-c] pyridino-1,4-dione is an organic compound with unique physical and chemical properties. Although this kind of compound is not detailed in "Tiangong Kaiwu", it can be explained as follows by ancient knowledge and related chemical principles:
- ** Appearance properties **: This compound is usually a crystalline solid. Although there is no corresponding record in ancient books, it is mostly crystalline according to the characteristics of similar organic compounds. Due to the intermolecular force, the molecules are arranged in an orderly manner to form a lattice structure, so it is speculated that it is a crystalline state with a certain luster and shape. < Br > - ** Solubility **: Generally speaking, there should be a certain solubility in organic solvents such as ethanol and ether. Although there was no name of ethanol and ether in ancient times, there were similar organic solvent applications, such as rice wine, turpentine, etc. Rice wine contains ethanol, which is soluble in some organic compounds. It is inferred that the compound may be soluble in some organic solvents. This is because intermolecular forces can be formed between the compound molecules and the organic solvent molecules, such as van der Waals force, hydrogen bond, etc., to promote dissolution.
- ** Stability **: Under normal temperature and pressure, if there is no special chemical environment, it should have certain stability. Although there are no modern experimental conditions for accurate determination in ancient times, based on chemical principles, the structure of pyridine rings and diketones in its molecular structure is relatively stable. If there is no strong oxidizing agent, reducing agent or specific acid-base environment, it is not easy to react.
- ** Melting point and boiling point **: have a certain melting point and boiling point. Due to the intermolecular force determining its phase transition temperature, however, there is a lack of accurate measurement methods in ancient times, and it is impossible to know its specific value. However, it can be seen that the stronger the intermolecular force, the higher the melting point and boiling point. There may be hydrogen bonds and van der Waals forces between the molecules of this compound, and the melting point and boiling point are not extremely low.

I look at your words, but I am inquiring about the price of 3,6-bis (methoxy-2-yl) pyridino [3,4-c] pyridino-1,4-dione in the market. However, the price of this product often changes for many reasons and cannot be determined.
First, the amount purchased has a great impact on the price. If the purchase quantity is low, the merchant may offer a discount to promote the sale, and the price should be lower; if you only buy a little, the unit price is afraid of high.
Second, the purity of this product is also the key. The higher the purity, the more difficult it is to produce, the higher the cost, and the higher the price. Those with high purity are suitable for fine scientific research, pharmaceutical preparation, etc.; if the purity is slightly lower, or used in industrial production with less demanding requirements, the price is also different.
Third, the situation of supply and demand in the market affects the price. If the demand for this product is strong and the supply is limited, the price will rise; conversely, if the supply is abundant, the demand is weak, and the price may decline.
Fourth, different suppliers have different pricing due to different cost accounting and business strategies. Well-known large factories have strict quality control, high cost and high price; while small factories compete for the market, the price may be lower. < Br >
If you want to know the exact price, you should consult chemical reagent suppliers, chemical product trading platforms, etc., and carefully investigate the quantity, purity, supply and demand, etc., in order to obtain a more accurate price.

I look at what you said about "3,6-bis (benzyl-2-yl) pyridino [3,4-c] pyridine-1,4-dione". The stability of this substance depends on its structure and its environment.
In terms of structure, the pyridine ring is aromatic and the system is relatively stable. However, the (benzyl-2-yl) group attached to the ring, because the benzyl ring in the benzyl group is connected to the methylene, the hydrogen atom of the methylene has a certain activity. In case of electrophilic reagents or nucleophiles, there may be reactions at the methylene, which affects the overall stability. < Br >
In the 1,4-dione structure, its carbonyl group has electron-absorbing properties, which reduces the electron cloud density of adjacent carbon atoms. In this structure, in an alkaline environment, α-hydrogen atoms are easy to leave, forming enol negative ions, which in turn triggers a series of reactions, such as condensation reactions, etc., which reduce stability.
From the perspective of the environment, if it is at a high temperature, the thermal motion of the molecules intensifies, the vibration of chemical bonds is enhanced to a certain extent, or the bonds are broken, which affects the stability. If exposed to light, some molecules or absorb photon energy and are in an excited state, triggering photochemical reactions, which is also unfavorable to stability.
If there is water in the system, the carbonyl group can undergo a hydration reaction. Although the equilibrium constant may not be large, it may be affected by long-term exposure to water, which may affect its stability.
If there are metal ions, the carbonyl group has the ability to coordinate, or forms a complex with metal ions, changing the molecular structure and electron cloud distribution, which affects the stability.
In summary, the stability of "3,6-bis (benzyl-2-yl) pyridino [3,4-c] pyridine-1,4-dione" is affected by the activity of the groups in its own structure and the environmental factors such as temperature, light, water, metal ions, etc. Under different conditions, the stability varies.