3-pyridinecarbonitrile, 5-bromo-2-hydroxy-

3-% methylbenzene, 5-2-furan-methyl, what is the way to use it? These three have their own special uses in the field of medicine and chemical engineering.
First of all, 3-% methylbenzene is often used in research. Because of its specific chemical properties, it can be used for specific receptors or enzyme interactions. In the treatment of diseases, it can be used for physiological control. For example, in some inflammatory diseases, 3-% methylbenzene can inhibit the release of inflammation and mediate inflammation, and it can be used to reduce the effect of inflammation. And it is also useful in the treatment of substances. It can be used as a agent to target active ingredients to specific targets or target cells, improve the effectiveness of the agent and reduce the side effects of non-target sites.
Up to 5%, its use is not good. In food engineering, it is important to thicken and determine the temperature. For example, when making fruit and meat, 5% can make it have suitable flow properties and increase the taste and smoothness of food. In the manufacturing industry, it can improve the physical properties of the product, increase the smoothness of the product. In the biological field, it can be used for the shaping of the product, and assist the molding of the product, and because of its properties, the activity of the product is small.
And 2-furan-methyl, which plays an important role in the synthesis of chemical compounds. The synthesis of many chemical compounds is in the process. With the starting material, a series of molecular skeletons with anti-reaction and various biological activities can be made. In the field of flavoring, 2-furan-methyl derivatives often have a special fragrance, which can be used to add a pleasant taste to flavors, foods, chemicals, etc. In the field of flavoring, some compounds containing 2-furan-methyl compounds have good protection or protection effects, and the impact of their environment is small.

3-% actinolite, 5-talc-2-silicate-magnesium, its physical properties are particularly important, and it is related to various usages. This is described in detail.
actinolite, the color is often dark green, or gray-white, and the quality is firm and brittle. Its luster is warm and moist, like fat like jade, with a luster of glass in the middle. The cleavage is obvious, and the flakes can be seen. The hardness is about 5-6, and it is scratched with a small blade, leaving a slight trace. The specific gravity is moderate, and it has a solid feeling. It is often born in metamorphic rocks, symbiotic with other stones, and is more common in geological tectonic changes. < Br >
Talc, white, light green or yellowish in color, soft and greasy in quality, and greasy to the touch, which is remarkable. Hardness is only 1, to touch it with a finger, that is, to leave marks. The luster is waxy or pearl-like, and the appearance is elegant. The flakes are flexible and elastic, and can be bent and broken. The specific gravity is small, about 2.58-2.83, and it feels light in the hand. It is slippery in nature and stable in chemical properties. It is insoluble in water, weak acids and weak bases. It is mostly produced in metamorphic rocks and is formed by hydrothermal alteration.
Magnesium silicate, often in powder or crystalline state. The color varies depending on the impurities, and the pure one is nearly colorless. The crystal structure is regular and has a certain luster. The hardness varies depending on the crystal type, which is roughly moderate. The specific gravity varies slightly according to its chemical composition. Poor solubility in water, strong chemical stability, and resistance to general acid and alkali erosion. Often used as a mineral raw material, it occurs in various types of rocks after complex geological processes.
The physical properties of these three are different. Actinolite is characterized by firmness, medium hardness and specific luster; talc is greasy, extremely soft and good flexibility; magnesium silicate is in the state of powder or crystallization and chemical stability. In the knowledge of the ancients, although there is no precise measurement today, it can be roughly identified according to practical experience, laying the foundation for its use in medicine, technology and other things.

The chemical properties of 3-pentyl acetamide, 5-bromo-2-furyl-are as follows:
In this compound, pentyl acetyl amide has the general properties of amides. Amylamine compounds usually have a certain degree of stability, and their carbonyl groups (C = O) can be added to some nuclei. For example, under the properties of the amide, the carbonyl group of the amide can be attacked by the nucleus, and the hydrolysis of the amide can be reversed to form carboxylic acids and amines.
5-bromo-2-furyl moiety, the bromine atom has the typical properties of the amide. Bromine atoms can be substituted inversely. For example, in suitable inverse components, they can be replaced by nuclear compounds such as alcohols and amines to form new carbon atoms. Due to the effect of the absorber of the bromine atom, it affects the density distribution of the subcloud on furan.
Furan is an aromatic pentameter. The subcloud distribution on furan is uneven, and its α-sites (2-sites and 5-sites) and β-sites (3-sites and 4-sites) are more anti-active. In some substitution inverse components, it is easier to attack the α-sites of furans. For example, under suitable conditions, it can be substituted by cytoacylation, alkylation, etc. In addition, furanation can also generate addition inverse effects under certain conditions, such as alkenyl and diels-Alder inverse effects, to form new hexa- compound.
This compound is generally enriched by the mutual influence of different groups. It can be used to build more molecules in the synthetic domain. Each group can be gradually transformed according to its characteristics to obtain the desired compound.

To prepare 3-dimethyl ether and 5-bromo-2-furan-formaldehyde, the following ancient methods can be followed.
First take the furan as the base, and use an appropriate agent at a suitable temperature to meet the brominating reagent. The method of bromination is often to use liquid bromine in an inert solvent, such as dichloromethane, to slowly drop into the furan solution, and the temperature should be controlled, so as not to overreact, so as to avoid by-product hybridization. After this bromination, 5-bromofuran can be obtained. Next, 5-bromo-2-furan is condensed with formaldehyde precursors, such as paraformaldehyde, under the catalysis of a base. The base can be selected from potassium hydroxide or sodium carbonate, and heated and stirred in a mixed solvent of alcohol and water. This step requires attention to the reaction process and timely monitoring. After the reaction is completed, 5-bromo-2-furan-formaldehyde is purified by ordinary separation methods, such as extraction, distillation, recrystallization, etc.
As for the preparation of 3-dimethyl ether, 5-bromo-2-furan-formaldehyde can be first reduced gently in an alcohol solvent with an appropriate reducing agent, such as sodium borohydride, to obtain the corresponding alcohol. Then take this alcohol and etherify it with iodomethane or dimethyl sulfate in the presence of a base. Bases such as potassium carbonate are heated and refluxed in solvents such as acetone. After the reaction is completed, after separation and purification, its impurities can be removed to obtain 3-dimethyl ether. < Br >
All reactions require attention to the ratio of reagents, the temperature and time of the reaction, and the separation and purification after each step of the reaction is crucial, which is related to the purity and yield of the product.

In recent years, the city has 3-lambnail fat, 5-2-guanidine-based things, and its appearance in the city is particularly impressive.
Since the talk of health preservation, people are more and more serious about their health. The lambnail fat has always been a wonderful product for nourishing the body, and it has been used in ancient times. Its nature is mild, and it has a good effect on replenishing deficiency and nourishing qi. People today are mostly tired and exhausted due to hard work, and the use of suet can make them healthy and prosperous. Therefore, there are many people who seek it. There are frequent transactions in the city. Although prices rise and fall from time to time, there are endless buyers.
As for the 5-2-guanidine-based stuff, this is a new wonder. It is derived from foreign techniques and has been refined by ingenious craftsmanship. It is of great use to physicians and craftsmen. Doctors use it as medicine to cure all kinds of difficult diseases; craftsmen take its characteristics and can make exquisite tools. Because of its extraordinary effect, it is more widely spread, and those who hear it want it, so it has caused competition in the market, and merchants gather, and there are many who seek this benefit. At the beginning of its price, it was rare and expensive, but later it became more and more mature with the method of making it. The quantity increased and the price was slightly flat, but it was still a popular item in the market, and the supply exceeded the demand.
Looking at these two, the prosperity of the city can be seen. People who come and go, or carry cars on their shoulders, or exchange gold for goods, are bustling. Vendors shout loudly, buyers carefully observe the bargaining, and it is very lively. The situation in front of the city is really a sign of a prosperous age. Everyone seeks profit and makes a living here, and because of the circulation of things, the arts and skills of the four sides can be exchanged, and the prosperity of the world can be promoted together.