4-oxo-9,10-dihydro-4h-benzo(4,5)cyclohepto(1,2.b)thiophene

4-oxo-9,10-dihydro-4H-benzo (4,5) cyclohepto (1,2.b) thiophene, Chinese name or 4-oxo-9,10-dihydro-4H-benzo (4,5) cycloheptano (1,2-b) thiophene, this is an organic compound. Its main use, commonly found in the field of organic synthesis, plays a key role in the construction of complex organic molecular structures.
In organic synthesis, due to its unique chemical structure, it is often used as a key intermediate. Through a series of chemical reactions, such as nucleophilic substitution, oxidation and reduction, it can be converted into various compounds with specific biological activities or material properties. In some pharmaceutical research and development, using this as a starting material, through structural modification and optimization, lead compounds with potential pharmacological activity can be obtained, providing an important basis for the creation of new drugs.
In addition, in the field of materials science, materials derived from this compound may have special optoelectronic properties, or be used in the field of organic optoelectronic materials, such as organic Light Emitting Diode (OLED), solar cells, etc., which make it possible to develop new functional materials. Due to its structural characteristics, this compound has shown important uses and potential value in the fields of organic synthesis and materials science.

4 - oxo - 9,10 - dihydro - 4H - benzo (4,5) cyclohepto (1,2.b) thiophene is an organic compound. This compound has specific physical properties. Its properties are mostly crystalline and quite stable at room temperature and pressure.
Looking at its melting point, it is usually in a specific temperature range, which is of great significance for the identification and purification of the compound. In organic solvents, its solubility also has characteristics. For example, in some polar organic solvents, it can show a certain solubility. This property is helpful for participating in the reaction as a solute in the chemical reaction, or in the separation and purification process, it can be effectively separated from impurities with the help of suitable solvents.
When it comes to the boiling point, there is also a corresponding value. This boiling point condition is extremely critical for separating the compound by means of distillation or controlling its state under high temperature reaction environment. Its density reflects the compactness and mass distribution of the molecule to a certain extent, and has a deep impact on the material preparation and physical mixing process involved in the compound.
In addition, the compound may have specific spectral characteristics. For example, the infrared spectrum can show the absorption peak of the corresponding functional group. Through this characteristic, various chemical bonds and functional groups in the molecular structure can be accurately identified, thus providing a strong basis for determining its precise chemical structure. These physical properties are interrelated and together provide a comprehensive picture of the physical properties of 4-oxo-9,10-dihydro-4H-benzo (4,5) cyclohepto (1,2.b) thiophene, which is of great significance for chemical research, materials development, and related industrial applications.

4-Oxo-9,10-dihydro-4H-benzo [4,5] cycloheptano [1,2-b] thiophene, which is an organic compound. Looking at its structure, it contains a unique structure formed by the fusion of benzene ring, cycloheptene and thiophene ring, which gives it specific chemical properties.
First of all, its physical properties, such organic compounds are usually solid, but the specific melting point and boiling point depend on the intermolecular forces. Molecules contain aromatic rings or have certain stability, resulting in high melting points. And its solubility, or in common organic solvents such as dichloromethane, chloroform, N, N-dimethylformamide has a certain solubility, because these solvents can form van der Waals forces or other weak interactions with the compound molecules. However, the solubility in water may be very small, because the overall polarity of the molecule is not good, it is difficult to form effective hydrogen bonds or other strong interactions with water molecules.
Again on its chemical properties, the presence of 4-oxo groups makes it significantly reactive. This carbonyl group can undergo many classical reactions, such as nucleophilic addition reactions. Nucleophilic reagents such as alcohols and amines can attack carbonyl carbon atoms to generate corresponding addition products. Taking alcohol as an example, under the catalysis of acid or base, the semi-acetal or acetal structure can be formed, which is often used as a carbonyl protection method in organic synthesis. And because the molecule contains unsaturated carbon-carbon double bonds, addition reactions can occur, such as addition with halogens and hydrogen halides, enriching molecular functional groups. In addition, the existence of conjugated systems makes it possible to participate in some reactions based on conjugated structures, such as the Diels-Alder reaction, which provides the possibility for the construction of more complex cyclic compounds.
Because of its special structure, it is used in the field of organic synthesis or as a key intermediate to help synthesize compounds with complex structures and specific biological activities. In materials science, or because of its special electronic structure, it has potential application value in optoelectronic devices.

To prepare 4-oxo-9,10-dihydro-4H-benzo (4,5) cyclohepto (1,2.b) thiophene, there are many methods, and the common methods are as follows.
First, a sulfur-containing aromatic ring and an unsaturated carbonyl compound with a specific structure are used as starting materials. First, the sulfur-containing aromatic ring is cyclized and added to the unsaturated carbonyl compound under suitable catalysts and reaction conditions. In this process, it is necessary to precisely control the temperature, reaction time and the ratio of reactants. If the temperature is too high, side reactions may occur frequently and the product is impure; if the temperature is too low, the reaction rate will be slow and take a long time. If a specific metal salt is selected as the catalyst, heated to a certain temperature in an organic solvent, and stirred for a number of times, the two interact to gradually build the basic skeleton of the target product.
Second, the sulfur-containing aromatic ring can also be functionalized first. By introducing a specific substituent, the electron cloud density and reactivity can be changed. Then, the modified sulfur-containing aromatic ring and another suitable reaction substrate can undergo a series of reactions such as condensation and cyclization under the catalysis of a base or an acid. In this case, the choice of catalyst is crucial, and different acid-base catalysts will have a significant impact on the reaction path and product yield.
Furthermore, a multi-step tandem reaction strategy can also be used. First, the starting material undergoes the first reaction to form an intermediate product, which does not need to be separated and is directly put into the next reaction. In this way, the cumbersome operation of intermediate product separation is reduced, and the reaction efficiency and atomic economy are improved. However, this strategy requires high continuity and compatibility of reaction conditions, and each step of reaction conditions needs to be carefully designed to ensure that all steps can proceed smoothly.
In short, there are various methods for synthesizing 4-oxo-9,10-dihydro-4H-benzo (4,5) cyclohepto (1,2.b) thiophene, each with its advantages and disadvantages. In actual operation, the appropriate synthesis method should be carefully selected according to the availability of starting materials, the controllability of reaction conditions, and the purity and yield of the product.

I don't know the price range of 4-oxo-9,10-dihydro-4H-benzo (4,5) cyclohepto (1,2.b) thiophene on the market. This is a very professional and specific chemical substance, and its price is determined by many factors.
First, the purity has a great impact. If the purity is extremely high, it is almost flawless, and can be used in high-end scientific research, precision pharmaceutical synthesis, etc., the price will be high; if the purity is slightly lower, it is only suitable for general experimental or industrial basic applications, and the price will be reduced.
Second, the relationship between supply and demand is also key. If the demand for this product is strong, if there is a large demand for it in a cutting-edge scientific research field, but the supply is limited, the price will rise; if the demand is flat and the supply is sufficient, the price may stabilize or even decrease.
Third, the difficulty of preparation should not be underestimated. If the preparation requires complex processes, expensive raw materials, and multiple fine processes, the cost will increase significantly, and the price will also rise. If the preparation is relatively simple and the cost is controllable, the price will have room to decline.
Fourth, the market competition situation also plays a role. If many merchants sell this product, the competition is fierce, and the competition is for customers, or the price will win; if there are few suppliers in the market, it is almost monopolized, and the price may be dominated by the supplier.
However, I have searched all over the ancient books, but I have not found a record of the exact price range of this item. In today's world, technology is constantly changing, and the market is unpredictable. If you want to know more about it, you should consult today's chemical material trading market, professional chemical product suppliers, or senior people in the chemical industry to get an accurate price.