methyl 3-amino-2-fluorobenzoate

Methyl 3-amino-2-fluorobenzoate (CAS 1195768-18-3): A Comprehensive Product Introduction

Methyl 3-amino-2-fluorobenzoate (CAS 1195768-18-3) is a significant organic compound in the chemical industry. Its unique molecular structure and chemical properties make it a valuable substance with a wide range of applications in various fields. In this article, we will explore in detail the properties, uses, applications in different industries, and preparation methods of Methyl 3-amino-2-fluorobenzoate.

Product Overview

Methyl 3-amino-2-fluorobenzoate is an aromatic ester containing an amino group and a fluorine atom on the benzene ring. The presence of these functional groups endows it with specific chemical reactivity and physical characteristics. Its molecular formula is C₈H₈FNO₂, and its molecular weight is approximately 169.15 g/mol. The compound typically appears as a white to off – white crystalline powder, which is relatively stable under normal storage conditions.

Physical and Chemical Properties

Appearance: As mentioned before, it is usually a white to off – white crystalline powder. This appearance is an important visual characteristic for quality control during production and handling.

Melting Point: The melting point of Methyl 3-amino-2-fluorobenzoate is an important physical parameter. It generally melts within a certain temperature range, which can be used to identify the purity of the compound. Pure samples have a more defined melting point range.

Solubility: It has limited solubility in water but is soluble in some organic solvents such as ethanol, methanol, and acetone. This solubility property is crucial for its use in various chemical reactions and formulations.

Stability: Under normal temperature and pressure, Methyl 3-amino-2-fluorobenzoate is relatively stable. However, it may react with strong oxidizing agents, acids, or bases. Therefore, proper storage conditions are required to maintain its stability, such as storing it in a cool, dry place away from direct sunlight and incompatible substances.

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Uses and Applications

Pharmaceutical Industry

In the pharmaceutical field, Methyl 3-amino-2-fluorobenzoate serves as an important intermediate for the synthesis of various drugs. The fluorine atom in its structure can enhance the lipophilicity and metabolic stability of the final drug product. For example, it can be used in the synthesis of drugs targeting specific biological receptors. The amino group can participate in the formation of amide bonds, which are common structural motifs in many pharmaceuticals. Some research has shown that derivatives synthesized from Methyl 3-amino-2-fluorobenzoate may have potential anti – inflammatory, anti – tumor, or anti – microbial activities. Pharmaceutical companies often use this compound as a starting material to develop new drugs with improved efficacy and fewer side effects.

Agrochemical Industry

In the agrochemical sector, Methyl 3-amino-2-fluorobenzoate can be used to synthesize pesticides and herbicides. The unique chemical properties of the compound allow it to be incorporated into the molecular structure of agrochemicals, enhancing their biological activity. For instance, it can be used to develop pesticides that are more effective in controlling pests while being less harmful to the environment. The fluorine atom can increase the binding affinity of the agrochemical to the target sites on pests, improving the overall efficiency of pest control.

Material Science

In material science, Methyl 3-amino-2-fluorobenzoate can be used in the synthesis of functional polymers. The amino and ester groups can participate in polymerization reactions, leading to the formation of polymers with specific properties. These polymers can be used in the development of high – performance materials such as coatings, adhesives, and fibers. For example, polymers synthesized from this compound may have improved thermal stability, chemical resistance, and mechanical properties.

Preparation Methods

Method 1: Esterification and Amination Reaction

This is a common method for preparing Methyl 3-amino-2-fluorobenzoate. First, 3 – amino – 2 – fluorobenzoic acid is reacted with methanol in the presence of a catalyst, usually a strong acid such as sulfuric acid. The esterification reaction occurs under reflux conditions, and the reaction mixture is heated for a certain period of time to ensure complete conversion. After the esterification reaction, the product is purified by methods such as distillation or recrystallization. The reaction equation is as follows:

3 – Amino – 2 – fluorobenzoic acid + CH₃OH (in the presence of H₂SO₄) → Methyl 3 – amino – 2 – fluorobenzoate + H₂O

The reaction conditions need to be carefully controlled, including the reaction temperature, reaction time, and the amount of catalyst used. The purity of the starting materials also affects the yield and quality of the final product.

Method 2: Fluorination and Amination Sequential Reactions

Another approach involves starting from a suitable benzene derivative without a fluorine atom. First, the fluorination reaction is carried out using a fluorinating agent such as Selectfluor. Then, the amino group is introduced through an amination reaction. This method requires more steps and careful selection of reaction conditions to ensure the regioselectivity of the fluorination and amination reactions. For example, the reaction conditions for fluorination need to be optimized to ensure that the fluorine atom is introduced at the desired position on the benzene ring.

Safety and Handling

When handling Methyl 3-amino-2-fluorobenzoate, appropriate safety measures should be taken. It may cause irritation to the skin, eyes, and respiratory tract. Therefore, personal protective equipment such as gloves, goggles, and a lab coat should be worn. In case of contact with the skin or eyes, rinse immediately with plenty of water and seek medical attention if necessary. The compound should be stored in a well – ventilated area away from heat sources and incompatible substances. When disposing of the compound, local environmental regulations should be followed.

Conclusion

Methyl 3-amino-2-fluorobenzoate (CAS 1195768-18-3) is a versatile compound with a wide range of applications in the pharmaceutical, agrochemical, and material science industries. Its unique chemical properties make it a valuable intermediate for the synthesis of various products. The preparation methods of this compound require careful control of reaction conditions to ensure high yield and purity. With the continuous development of the chemical industry, the demand for Methyl 3-amino-2-fluorobenzoate is expected to increase, and more research will be carried out to explore its potential applications.