Guanidine, 1-(P-Chlorophenyl)-3-Cyano-

The main use of this product is 1- (p-aminobenzene) -3-aminophenylhydrazine, which is useful in many fields.
In the field of medicinal chemistry, it is often a key intermediate for the synthesis of various drugs. Due to the characteristics of this structure, compounds with specific pharmacological activities can be derived through a series of chemical reactions. For example, based on this, drugs with antibacterial and antiviral effects can be synthesized, which can inhibit the growth and reproduction of pathogens by interfering with the metabolic pathway of pathogens or the synthesis of biological macromolecules; or used to synthesize anti-tumor drugs, which can play an anti-cancer role by regulating the proliferation and apoptosis-related signaling pathways of tumor cells.
In the field of dye chemistry, it also plays an important role. It can be used as a raw material for synthetic dyes. Due to its special amino and phenylhydrazine structures, through appropriate chemical modification and coupling reaction, it can produce dyes with rich colors and good stability. Such dyes are either used for fabric dyeing to give fabrics a lasting and bright color; or for ink manufacturing to make the color of prints fuller and clearer.
In the field of materials science, it also has its uses. By polymerization with other compounds, polymer materials with special properties can be prepared. For example, it can improve the thermal stability and mechanical properties of materials, and is used in aerospace, automobile manufacturing and other fields that require strict material properties to meet specific engineering needs.
In summary, the product 1 - (p-aminobenzene) - 3 - aminophenylhydrazine has shown important uses in many aspects such as medicine, dyes, materials, etc. It is actually a class of organic compounds with wide application prospects.

"Tiangong Kaiwu" cloud: p-hydroxybenzaldehyde is also an organic compound. It has unique physical properties and is related to applications in many fields.
p-hydroxybenzaldehyde, at room temperature, is white to light yellow crystalline state, like a fine powder, it looks quite textured. Its melting point is about 115-117 ° C. When the temperature rises to this point, the substance gradually melts from a solid state to a liquid state, just like ice and snow melting when they are warm. The boiling point reaches 249.5 ° C. At this high temperature, it will boil and transform into a gaseous state.
In addition, its solubility also has characteristics. In water, p-hydroxybenzaldehyde has relatively limited solubility, slightly soluble in water, like dust in water, it is difficult to fully integrate. However, in organic solvents such as ethanol, ether, and acetone, it can be better dissolved, just like fish entering water and dispersing in it. This difference in solubility makes it reasonable to use it in different chemical processes according to the characteristics of the solvent.
The density of p-hydroxybenzaldehyde is about 1.129 (g/cm ³), which has a certain sense of weight. When placed in the hand, it can be sensed that its density is different from that of common substances. And it has sublimation. Under certain conditions, it is directly converted from solid to gaseous without liquid state. This property makes it useful in some separation and purification processes.
As for 3-hydroxybenzonitrile, it is also an important organic compound. It is also in a solid state at room temperature, and the appearance is often white or off-white crystalline powder. The melting point is about 112-114 ° C, which is similar to the melting point of p-hydroxybenzaldehyde. When the temperature rises to a corresponding degree, the physical state changes.
3-hydroxybenzonitrile is insoluble in water, which is similar to p-hydroxybenzaldehyde. It is like an independent individual in water, and it is difficult to melt with water. However, in organic solvents such as dichloromethane and chloroform, it has good solubility and can be uniformly dispersed. Its density is about 1.27 (g/cm ³), which is slightly higher than that of p-hydroxybenzaldehyde. This difference can be detected when touching or feeling its weight. These physical properties lay the foundation for their application in chemical, pharmaceutical, and other industries, enabling craftsmen, pharmacists, and others to make good use of them according to their characteristics to form various utensils and pharmaceuticals.

The chemical properties of "p-hydroxybenzene" and "hydroxy naphthalene" mentioned by Wu Guan'er need to be investigated in detail.
For p-hydroxybenzene, its molecules contain hydroxyl groups and benzene rings. The hydroxyl group is an active group and has a certain hydrophilicity. The benzene ring gives it a certain stability. Due to the presence of hydroxyl groups, p-hydroxybenzene can undergo many reactions. For example, the hydroxyl group can react with active metals such as sodium to release hydrogen gas, which is a typical reaction of the hydroxyl group to show its activity. In addition, the hydroxyl group can be oxidized and can be converted into an aldehyde group or a carboxyl group under suitable conditions, which is the characteristic of its oxidation. At the same time, due to the conjugated system of the benzene ring, p-hydroxybenzene can undergo electrophilic substitution reaction, and the hydrogen atom on the benzene ring can be replaced by other groups, such as halogenation, nitrification and other reactions. Compared with benzene, its reactivity is different. Because the hydroxyl group is the power supply group, the electron cloud density of the benzene ring increases, and the electrophilic substitution is more likely to occur.
As for the hydroxy naphthalene, the naphthalene ring has a large conjugated system, and its stability is quite high. The hydroxyl group attached to the naphthalene ring also has a significant impact on its chemical properties. Hydroxynaphthalene can also react with active metals due to the hydroxyl group. And due to the special structure of the naphthalene The difference from p-hydroxybenzene is that the electron cloud distribution of the naphthalene ring is different from that of the benzene ring, which makes the electrophilic substitution reaction of the hydroxy naphthalene different from that of the p-hydroxybenzene ring. At the same time, the oxidation reaction of the hydroxy naphthalene also has its own unique features. Due to the existence of the naphthalene ring, the oxidation process is more complicated, and a variety of oxidation products may be formed.
In summary, although both p-hydroxybenzene and hydroxy naphthalene contain hydroxyl groups, due to the different structures of the attached parent rings, there are similarities in their chemical properties, such as the reaction of hydroxyl groups with active metals; there are also many differences, such as the check point Therefore, the chemical properties of the two are not completely stable, and under suitable conditions, various chemical reactions can occur, revealing their lively chemical activity.

The method of defeating the enemy is related to victory or defeat, and cannot be ignored. In today's discussion of the preparation of p-hydroxybenzene and hydroxybenzoquinone, it is necessary to study the method in detail.
The preparation of p-hydroxybenzene has been tried through the ages. One method is based on phenol, and through a specific chemical reaction, supplemented by exquisite technology, p-hydroxybenzene can be obtained. First, the phenol is combined with a certain agent under a specific temperature and humidity environment, and the heat control needs to be accurate, just like the cooking of a cow, which is exactly the same as the pool. In the meantime, observe the change of its color and texture, and wait until it meets the requirements before the first product is obtained. After many purifications, its impurities are removed, just like panning for gold in sand, and finally pure p-hydroxybenzene is obtained.
As for the preparation of hydroxybenzoquinone, there are also wonderful methods. It is often started with an organic raw material and goes through several processes. In the first process, the raw materials and other things are matched in a certain proportion, and in the special utensils, the appropriate pressure and temperature are applied, just like the art of controlling the universe, so that the raw materials undergo subtle changes. In the second process, through the method of separation and purification, the redundancy is removed and the essence is retained. In this process, every step needs to be handled carefully. If there is a little carelessness, all previous efforts will be lost.
The method of preparation is not static. With the changes of the times, the skills should also be refined. It is necessary to absorb new ideas, such as observing the celestial phenomena to observe the changes of time, and combining the current new tools and new principles to improve the old methods. In this way, the preparation method can be made more efficient, delicate, and the resulting product is more superior, which is more beneficial for all purposes.

There are many precautions in the use of p-hydroxybenzaldehyde and 3-hydroxybenzene hydrazone.
First, it is related to the properties of both. P-hydroxybenzaldehyde has the active characteristics of aldehyde groups and is easy to react with many nucleophiles. When storing and using, pay attention to its stability. If it is exposed to air for too long, the aldehyde group may be oxidized, causing the product to deteriorate and affecting the subsequent reaction effect. 3-hydroxybenzene hydrazone also has its own characteristics. The hydroxy group and benzene hydrazone in its structure interact with each other, or affect its solubility and reactivity.
Second, the use environment is very critical. In terms of temperature, the reactions in which the two participate are mostly temperature-sensitive. If the temperature is too high, or the reaction rate is too fast, forming by-products; if the temperature is too low, the reaction will be slow or even stagnant. If the temperature of a reaction is not properly controlled, the yield of the product will be greatly reduced. Humidity cannot be ignored either. Humid environment may make the two absorb moisture, which affects their purity and reaction performance.
Third, the operation process needs to be cautious. When using both, it should be ensured that the measuring tool is accurate and the feeding ratio is correct. Because the ratio of the two has a great impact on the reaction process and product structure. When mixing the two, it should be added slowly and stirred fully to make the two contact evenly to prevent the local concentration from being too high and triggering abnormal reactions. During the reaction process, the reaction process can be closely monitored, and the reaction degree can be understood in real time by means of spectral analysis, so as to adjust the reaction
Fourth, safety protection should not be underestimated. P-hydroxybenzaldehyde and 3-hydroxybenzene hydrazone may have certain irritation and toxicity. When operating, wear protective clothing, gloves and goggles to avoid direct contact with skin and eyes. If inadvertent contact, rinse with plenty of water immediately and seek medical attention as appropriate. And the operation should be carried out in a well-ventilated place to prevent the accumulation of harmful gases.