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What are the main uses of A-Amino-4-Fluorobenzeneacetic Acid?
A-amino-4-fluorophenylacetic acid, this is an organic compound. It has a wide range of uses and is often a key intermediate in the field of medicinal chemistry.
The history of Guanfu Pharmaceutical's research and development, the creation of many drugs, relying on this compound as the starting material, through complex chemical reactions, adding functional groups, shaping the specific configuration of molecules, to form drugs with specific pharmacological activities. Because of the presence of amino groups and fluorine atoms in its structure, it can significantly affect the physical and chemical properties and biological activities of molecules, so it can endow the prepared drugs with unique effects.
In the field of pesticide chemistry, there are also traces. Pesticide molecules constructed on its basis may have high insecticidal and bactericidal properties. The characteristics of Gain amino and fluorine atoms can precisely bind them to specific targets in pests or pathogens, interfering with their normal physiological and metabolic processes, so as to achieve the purpose of preventing pests and diseases.
Furthermore, in the field of organic synthetic chemistry, A-amino-4-fluorophenylacetic acid, as an important intermediate, can facilitate the synthesis of various complex organic compounds. Chemists can achieve precise regulation of the structure and function of the target product by ingenious modification of its structure, expand the types and properties of organic compounds, and promote the progress and development of organic synthetic chemistry.
This compound plays an indispensable role in many fields such as medicine, pesticides, and organic synthesis, and has far-reaching impact on the development of related industries.
What are the chemical properties of A-Amino-4-Fluorobenzeneacetic Acid?
A-amino-4-fluorophenylacetic acid, this is an organic compound. Its physical properties are mostly white crystalline powders at room temperature, with a certain melting point, about [X] ° C, depending on purity and test conditions. It has a certain solubility in water, which can be based on the principle of similar miscibility. Its molecular structure contains polar groups, so it has a certain solubility in polar solvent water, and it has good solubility in organic solvents such as ethanol and acetone.
Its chemical properties are active, and amino groups can participate in many reactions. If it reacts with acid to form a salt, in the case of hydrochloric acid, amino nitrogen atoms provide lone pairs of electrons, which combine with hydrogen ions to form corresponding salts. And the amino group has nucleophilic properties, and can undergo nucleophilic substitution reaction with halogenated hydrocarbons. Halogen atoms in halogenated hydrocarbons are replaced by amino groups to form new nitrogen-containing compounds.
The benzene ring part also has unique chemical properties. Because the benzene ring has a conjugated large π bond, it has certain stability and is prone to electrophilic substitution reaction. If under appropriate conditions, bromine reacts with bromine, bromine atoms replace hydrogen atoms on the benzene ring.
The carboxyl group properties cannot be ignored. It is acidic and can neutralize with bases to form corresponding carboxylic salts and water. It can also undergo esterification reaction with alcohols. Under acid catalysis, carboxyl groups and alcohol hydroxyl groups are dehydrated and condensed to form ester compounds.
In addition, although the fluorine atom in this compound is relatively stable, it can also participate in the reaction under specific strong reaction conditions, affecting the overall chemical activity and reaction selectivity of the molecule.
This compound is widely used in the field of organic synthesis and can be used as a pharmaceutical intermediate for the synthesis of various drugs; in materials science, with appropriate modification, it can be used to prepare materials with special properties.
What is the production process of A-Amino-4-Fluorobenzeneacetic Acid?
The process of making A-amino-4-fluorophenylacetic acid is quite delicate, and it requires several materials and a series of wonderful methods to obtain it.
First, 4-fluoroacetophenone needs to be prepared, which is the key starting material. Take an appropriate amount of 4-fluoroacetophenone, place it in a reactor, add hydroxylamine hydrochloride, and add an appropriate amount of sodium acetate as an aid. At a suitable temperature, about 60 to 80 degrees Celsius, let it react, which takes about 3 to 5 hours. This step aims to make 4-fluoroacetophenone react with hydroxylamine hydrochloride to obtain 4-fluoroacetophenone oxime. The reaction principle is that the amino group in the hydroxy amine hydrochloride interacts with the carbonyl phase of 4-fluoroacetophenone to form the structure of oxime.
When 4-fluoroacetophenone oxime is obtained, move to another clean kettle, add an appropriate amount of concentrated sulfuric acid, slowly heat up to 120 to 140 degrees Celsius, and continue the reaction for about 2 to 3 hours. This step is a Beckmann rearrangement reaction. Under the action of concentrated sulfuric acid, the molecular structure of 4-fluoroacetophenone oxime is rearranged to obtain 4-fluoroacetaminophenone. Concentrated sulfuric acid here plays a catalytic role and promotes the rearrangement.
Treatment of 4-fluoro - α - acetaminophenone with sodium hydroxide solution. Dissolve an appropriate amount of sodium hydroxide in water, mix with 4-fluoro - α - acetaminophenone, control the temperature at 50 to 70 degrees Celsius, and react for about 2 to 3 hours. This is a hydrolysis reaction. The acetyl group of 4-fluoro - α - acetaminophenone is hydrolyzed to give 4-fluoro - α - acetaminophenone. Sodium hydroxide provides an alkaline environment for the hydrolysis reaction to facilitate its smooth progress.
4-fluoro- - α - aminophenylacetophenone is obtained, and then acidified. Add an appropriate amount of dilute hydrochloric acid and adjust the pH to the acidic range to convert 4-fluoro - α - aminophenylacetophenone into A-amino-4-fluorophenylacetic acid. After purification by extraction and crystallization, pure A-amino-4-fluorophenylacetic acid can be obtained. A suitable organic solvent can be selected for extraction, such as ethyl acetate, to separate the product from the reaction solution; the crystallization is based on its solubility characteristics, temperature control and solvent ratio control, so that the product crystallizes and precipitates, and the final product is good.
What is the price range of A-Amino-4-Fluorobenzeneacetic Acid in the market?
The price of "A-Amino-4-Fluorophenylacetic Acid" in the market is difficult to be certain. The price of this product often varies due to many reasons, such as the quality of the product, the amount of purchase, the fluctuation of market conditions and the difference in origin.
Looking at the past market, if the quality is high and the purchase volume is quite large, the price may be slightly lower when blocking trade; if the purchase quantity is small, only a little for research, etc., the price may be high. In the past, the price of this product per gram in the market was as low as a few dollars, but there were also special reasons that caused the price per gram to reach tens of dollars.
And the origin is different, and the price is also different. If the product is produced in a place with abundant supply and skilled craftsmanship, the price may be close to the people due to the controllable cost; if the origin is remote, the raw materials are rare, or the craftsmanship is complicated, the price will tend to be higher.
And the market supply and demand trend is also the key to the price. Strong demand and limited supply, the price will rise; on the contrary, if supply exceeds demand, the price will drop. Therefore, in order to know the exact price, it is necessary to carefully observe the current market situation, consult various suppliers, and compare their price, quantity, and quality to get a more accurate price.
What is A-Amino-4-Fluorobenzeneacetic Acid's Quality Standard?
A-amino-4-fluorophenylacetic acid, a key organic compound in the field of fine chemicals, is widely used in the pharmaceutical, pesticide and other industries. To ensure its high quality and stable performance in various application scenarios, it is essential to formulate strict Quality Standards. The following are the main Quality Standard details.
The first is the content determination, which is the core indicator to measure its quality. The content of A-amino-4-fluorophenylacetic acid, determined by high performance liquid chromatography (HPLC), should not be less than 98.0%. This high purity requirement is designed to ensure that it can accurately participate in the reaction when it is used as a key intermediate in pharmaceutical synthesis, and improve the efficiency and quality stability of drug synthesis. If the content does not reach the standard, there will be too many impurities, or the reaction by-products will increase, which will affect the activity and safety of the drug.
The second time is to check the relevant substances. The HPLC method is used to strictly monitor the impurities introduced in the production process, such as starting materials, intermediates and by-products. The area of a single impurity peak shall not be greater than 0.5% of the main peak area of the control solution, and the area of the total impurity peak shall not be greater than 1.0% of the main peak area of the control solution. Strict control of the impurity content is intended to avoid unknown adverse reactions of impurities in the subsequent use of the drug, and to ensure the
Then the appearance and properties. This product should be white to off-white crystalline powder, and it should have uniform color and no foreign matter. This intuitive standard can help to preliminarily judge the quality of its quality. If the color is abnormal or there is foreign matter mixed in, or it suggests that there is pollution or quality fluctuations in the production process.
Melting point is also an important indicator. Its melting point range should be in a specific range, such as [specific melting point range], with an allowable deviation of ± [X] ° C. The accurate determination of the melting point can verify its purity and crystal structure. The presence of impurities will cause the melting point to shift or the melting range to widen.
Moisture content cannot be ignored. Determination by Karl-Fischer method, the moisture content shall not be higher than [X]%. Excessive moisture may affect its chemical stability, causing adverse reactions such as hydrolysis, which in turn affects product quality and storage life.
Heavy metal content must comply with regulations. Determined by atomic absorption spectrometry, the total amount of heavy metals such as lead, mercury, and cadmium shall not exceed parts per million [X]. Due to the potential toxicity of heavy metal residues, strict restrictions on their content can ensure that they are not harmful to human body and the environment in pharmaceutical and pesticide applications.