1H-Indazole, 3-Iodo-

The physical properties of 1H-pyrazole and 3-carboxyl groups are as follows:
Its outer surface is usually white to light-colored crystalline powder, and this shape is easy to treat. Melting is very special, and it can be used at 180-185 ° C. In this degree of solubility, the material is composed of solid and liquid, and this melting property can be used to determine the degree of solubility of the material.
In terms of solubility, 1H-pyrazole-3-carboxyl is slightly soluble in water, but it can be soluble in many kinds of water, such as dimethylmethylamine (DMF), dimethyl sulfate (DMSO), etc. It is slightly soluble in water because of the action of water molecules, and the ability of water to form water is limited; it is soluble in water because its molecules are soluble and have similar or non-soluble characteristics, which conforms to the principle of "similar miscibility".
Density is 1.5-1.6 g/cm ³, which makes it in a specific environment, showing the sedimentation or floating characteristics of the phase. In chemical and engineering applications, this property is important for operations such as separation and lifting.
In addition, the 1H-pyrazole-3-carboxyl group has a certain qualitative nature, which can be maintained under normal conditions. However, under the conditions of acid, acid or high temperature, the molecular properties may be changed and reversed. For example, in the environment, the carboxyl group may be neutralized and reversed to generate a phase.
Its crystalline properties also have deep effects on its physical properties, and the molecular arrangement of the crystals determines its hardness, optical properties, etc. In addition, the polyphysical properties of 1H-pyrazole-3-carboxyl groups make it exhibit important useful values in the fields of chemical synthesis, materials science, and the like.

1H-pyrazole, 3-carboxyl, is an interesting class of organic compounds. Its chemical properties are unique, with both the inherent properties of pyrazole ring and the properties of carboxyl group.
As far as pyrazole ring is concerned, it has aromatic properties, which endows the compound with certain stability. The nitrogen atom on the pyrazole ring can participate in many chemical reactions because of its lone pair of electrons. First, it can be used as an electron donor to form coordination compounds with metal ions, which has potential applications in the field of catalysis or materials science.
The introduction of carboxyl groups adds many properties to this compound. The carboxyl group is acidic and can dissociate hydrogen ions under appropriate conditions, thus participating in acid-base reactions. This acidic property allows 1H-pyrazole-3-carboxylic acids to neutralize with bases to form corresponding carboxylic salts.
Furthermore, carboxyl groups can participate in esterification reactions. When co-heated with alcohols under acid-catalyzed conditions, the hydroxyl groups of the carboxyl group combine with the hydrogen atoms of the alcohol to form water, and then form ester compounds. This reaction is often used in organic synthesis to prepare various esters, which are widely used in the fields of fragrances, medicines, etc.
In addition, in the molecule of 1H-pyrazole-3-carboxylic acids, the pyrazole ring and the carboxyl group interact with each other. The electron cloud distribution of the pyrazole ring changes due to the presence of carboxyl groups, and vice versa. This interaction may affect the activity check point and reaction selectivity of the compound in chemical reactions.
At the same time, due to the heteroatoms such as nitrogen and oxygen, the compound can self-assemble with other molecules through weak interactions such as hydrogen bonds between molecules to form specific supramolecular structures, which shows unique application prospects in the fields of crystal engineering and supramolecular chemistry.

There are many common synthesis methods of 1H-pyrazole and 3-yl, which are described in detail below.
First, the synthesis method using hydrazine and 1,3-dicarbonyl compounds as raw materials. This is a classic method. Hydrazine reacts with 1,3-dicarbonyl compounds under suitable conditions to generate 1H-pyrazole derivatives. During the reaction, the amino group of hydrazine reacts with the carbonyl group of 1,3-dicarbonyl compounds to form a pyrazole ring. For example, acetylacetone and hydrazine can react smoothly to form 3,5-dimethyl-1H-pyrazole under appropriate acid-base catalysis conditions. This method is easy to obtain raw materials, relatively mild reaction conditions, and simple operation, so it is widely used in the field of organic synthesis.
Second, it is prepared by the 1,3-dipole cycloaddition reaction of nitrile oxide and acetylene. As a 1,3-dipole body, nitrile oxide undergoes cycloaddition reaction with acetylene and its derivatives, and can efficiently construct 1H-pyrazole rings. This reaction has the advantages of high atomic economy and good reaction selectivity. However, nitrile oxide usually needs to be prepared on site, which requires high reaction operation, and the preparation of raw material nitrile oxide is sometimes cumbersome, which limits its large-scale application.
Third, 1H-pyrazole is synthesized by the reaction of halogenated ketones and hydrazine. Halogenated ketones and hydrazine react in the presence of bases, the halogen atoms leave, and the amino groups of hydrazine react with ketone carbonyl groups, and then close the ring to form 1H-pyrazole. The key to this method lies in the selection of halogenated ketones and the type and amount of bases in the reaction. Different halogenated ketones and bases will have a significant impact on the reaction rate, yield and product selectivity. For example, 1H-pyrazole derivatives with specific substituents can be selectively synthesized by selecting suitable halogenated ketones and bases.
Fourth, Synthesis methods catalyzed by transition metals. The reaction catalyzed by transition metals such as copper and palladium can achieve the construction of 1H-pyrazole rings. Such methods usually have the characteristics of high reactivity and good selectivity, and can achieve some reactions that are difficult to achieve by traditional methods. For example, the reaction of nitrogenous substrates with alkynes catalyzed by copper can produce 1H-pyrazole derivatives with diverse structures. However, transition metal catalysis often requires the use of more expensive metal catalysts and ligands, and the reaction conditions are sometimes harsh, which requires high reaction equipment and operation.

1H-pyrrole, 3-nitrile, this compound has applications in many fields such as medicine, materials, and chemical synthesis.
In the field of medicine, it is an important intermediate for drug synthesis. In the synthesis of many bioactive compounds, such as some anticancer drugs and antibacterial drugs, 1H-pyrrole-3-nitrile plays a key role. Taking the development of anticancer drugs as an example, scientists can synthesize a series of derivatives with potential anticancer activity by modifying and modifying their structures. After studying the interaction of these derivatives with specific targets in cancer cells, they hope to find new anticancer drugs with better efficacy and less side effects.
In the field of materials, 1H-pyrrole-3-nitrile also shows unique value. It can be used to prepare organic optoelectronic materials. Due to its special electronic structure and optical properties, it can be introduced into the organic optoelectronic material system to optimize the optoelectronic properties of materials, such as improving the fluorescence efficiency and charge transport ability of materials, and then applied to organic Light Emitting Diode (OLED), solar cells and other devices to improve the performance and efficiency of these devices.
In the field of chemical synthesis, 1H-pyrrole-3-nitrile is a key organic synthesis block. Organic synthesis chemists use its active functional groups to construct complex and diverse organic compounds through various chemical reactions, such as nucleophilic substitution reactions, cyclization reactions, etc., providing a basis for the innovative research and development of chemical products. For example, in the synthesis of fine chemicals, as a starting material, additives, catalysts and other products with special functions are synthesized through multi-step reactions.

In today's world, business conditions are treacherous and changeable, and the market prices of 1H-pyrrole and 3-nitrile also fluctuate with many factors. These two are widely used in the field of chemical industry, or involved in pharmaceutical synthesis, or used in material preparation, so their price is the most important in the industry.
Looking at its market price, it is difficult to say in a word. The change in its price depends first on the state of supply and demand. If there are many people in the market who want it, but there are few products, the price will rise; on the contrary, if the supply exceeds the demand, the price will fall. If the rapid progress of pharmaceutical research and development in recent years, the demand for 1H-pyrrole and 3-nitrile has increased greatly, and the price will also rise.
Furthermore, the price of raw materials is also the key. The system of these two, Wright determines the raw materials. If the price of raw materials rises, its production cost will increase, and the market price will also rise. And the technology of production also affects its price. With the emergence of new technologies, if costs can be reduced and output increased, the price is expected to stabilize or decrease.
In addition, the impact of policies and regulations and geopolitics cannot be underestimated. The stricter the environmental protection regulations, the more limited the production, the higher the price; the unstable the geography, the blocked the transportation, and the fluctuation of the price can also be caused.
In summary, the market prices of 1H-pyrrole and 3-nitrile are high and low, and there is no fixed number. If the industry wants to know the details, they must judge the situation and look at the feelings of all parties before they can obtain their general strategy.