1,2-Diene-3-alkynylbenzene has a wide range of main uses. In the field of organic synthesis, it is often used as a key intermediate and participates in the construction of many complex organic compounds by virtue of its unique structure. Through carefully designed chemical reactions, it can be converted into drug molecular precursors with specific biological activities, opening up new paths for drug research and development. For example, in the synthetic route exploration of some anti-tumor drugs, 1,2-diene-3-alkynylbenzene can be used as a starting material and modified by multi-step reactions to obtain compounds with potential anti-cancer activity.
In the field of materials science, it also has important applications. Due to its unique conjugate structure, it can be used to prepare materials with special photoelectric properties. For example, copolymerization with other conjugated monomers can obtain luminescent materials that can be used in organic Light Emitting Diodes (OLEDs), endowing the materials with unique luminous wavelengths and efficient luminous efficiency, and improving the display quality of OLED screens.
Furthermore, in the field of supramolecular chemistry, 1,2-diene-3-alkynylbenzene can utilize its π-π stacking action and active check points such as alkynyl groups to construct novel supramolecular structures. With this, it is expected to realize the identification and enrichment of specific molecules, and show the potential application in chemical sensors, which can sensitively detect specific substances in the environment, such as harmful gases or heavy metal ions.

1% 2C2-diene-3-naphthol is an organic compound, and its physical properties are as follows:
In terms of appearance properties, under normal conditions, 1% 2C2-diene-3-naphthol is mostly white to light yellow crystalline powder, which may gradually darken in color in light and air. This is because the naphthalene ring, alkenyl group and phenolic hydroxyl group in its molecular structure are relatively active, vulnerable to light and oxygen, triggering oxidation and other reactions, resulting in color changes.
At the melting point, the melting point of the compound is about 120-125 ° C. As an important physical property of a substance, the melting point is determined by its intermolecular forces. 1% 2C2-diene-3-naphthol molecules have van der Waals forces, hydrogen bonds and other interactions. When heated, sufficient energy is required to overcome these forces, so that the crystal lattice is destroyed, and then melted. This specific melting point range can be used as one of the basis for identifying this compound.
In terms of solubility, 1% 2C2-diene-3-naphthol is slightly soluble in water, but easily soluble in organic solvents such as ethanol, ether, and chloroform. This is because water is a polar solvent, while in 1% 2C2-diene-3-naphthol molecules, although the phenolic hydroxyl group has a certain polarity, the naphthalene ring and the alkenyl group are non-polar parts, and the overall polarity is weak. According to the principle of "similar miscibility", it has better solubility in organic solvents with low polarity.
In addition, 1% 2C2-diene-3-naphthol has sublimation properties, and can be directly converted from solid to gaseous state at specific temperatures and pressures. This property is related to intermolecular forces and vapor pressure, and it can be purified by using sublimation properties.

There are many methods for the chemical synthesis of 1,2-diethylene-3-thiophene, each of which has its own advantages and has its own uses in different situations.
First, halogenated aromatics and thiophene derivatives are used as raw materials, and the coupling reaction is catalyzed by palladium. This is a commonly used method, such as bromoaromatics and 2-thiophene boronic acid, in the presence of palladium catalyst, base and ligand, heated in a suitable solvent, the target product can be obtained. This reaction has good selectivity and high yield, but the cost of palladium catalyst is high, or its large-scale application is limited.
Second, it is prepared by the functionalization of thiophene rings. The thiophene is first functionalized to a specific group, and then divinyl is introduced through a series of reactions. For example, using thiophene as the starting material, bromothiophene is first brominated, and then reacted with vinyl Grignard reagent or lithium reagent to introduce vinyl. This method is slightly complicated, but the raw materials are easy to obtain, the operation is relatively simple, and it is more suitable for laboratory synthesis.
Third, the intramolecular cyclization reaction is used. Using a chain-like compound containing an appropriate functional group as the raw material, the thiophene ring is constructed by intramolecular cyclization and vinyl is introduced. This approach has high atomic economy and short steps, but it requires strict reaction conditions and precise control of reaction parameters.
Fourth, the cyclization addition reaction catalyzed by transition metals is used. For example, alkynes and nitriles are cyclized to form thiophene derivatives under the catalysis of transition metals, and then further modified to introduce vinyl. This is a new method with innovation and potential, but the reaction mechanism is complex and needs to be further studied and optimized.

1% 2C2-diethylene-3-naphthalene anthracene is very important during storage and transportation.
First, the control of temperature. This substance is more sensitive to temperature changes, and high temperature can easily cause changes in its properties, or even cause chemical reactions. Therefore, when storing, it needs to be placed in a cool place, usually the temperature should be controlled below 20 degrees Celsius to ensure its chemical stability. During transportation, it is also necessary to beware of direct sunlight and high ambient temperature. Heat insulation equipment and cold chain transportation can be used. If conditions permit, a temperature monitoring device can be prepared for real-time monitoring. If the temperature exceeds the limit, take cooling measures in time.
Second, humidity prevention. Humid environment or cause 1% 2C2-diethylene-3-naphthalene anthracene to absorb moisture, which in turn affects its quality. The storage place should be kept dry, and the relative humidity should be maintained below 50%. A desiccant can be built into the storage space and replaced regularly to absorb water vapor. The transportation container must also ensure that it is well sealed to prevent the intrusion of external moisture.
Third, the packaging is proper. Suitable packaging materials must be selected. This substance may be corrosive or reactive to a certain extent. The packaging material should be compatible with it and do not chemically react. It is commonly used in containers made of glass, special plastics, etc., and the container should be strong to prevent damage and leakage due to collision and extrusion during transportation. Warning labels should be clearly marked on the outside of the package, such as "flammable" "harmful" and other words to remind relevant personnel to pay attention.
Fourth, isolation and protection. 1% 2C2-diethylene-3-naphthalene anthracene should not be mixed with oxidants, acids, bases and other substances. Because of its active chemical properties, contact with it or cause a violent reaction, endangering safety. Operators and transporters should be equipped with corresponding protective equipment, such as protective clothing, gloves, goggles, etc., to avoid direct contact. If they are inadvertently touched, they should immediately rinse with a large amount of water and seek medical attention in time.

I have heard your inquiry about the approximate market price of 1,2-diethyl-3-chlorothiophene. However, the price of this chemical often varies due to time and place, supply and demand, quality and many other factors, so it is difficult to determine the exact number.
Watching the city's easy picture, if the supply of this product exceeds the demand, the price may decline; if the demand exceeds the supply, the price will rise. And the quality of its quality is also the key to pricing. It is reasonable to say that the better one has a high price, and the second one has a low price.
Furthermore, the difference in region also has an impact. The prosperous capital is Dayi, with convenient transportation, low logistics costs, and slightly different prices than remote places. And the dimension of time, different years of age, the price is also different. On the occasion of new production, the price may be flat due to large quantities; after long storage, the price may change due to wear and tear.
To know the exact market price, consult chemical market merchants, industry brokers, or refer to professional chemical market information platforms to get a near-real price.