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• Solvents and Organic Chemicals Organic Compounds Benzenoids Phenol ethers Aminophenyl ethers

3-(Cyclopentyloxy)-4-methoxyaniline (CAS No. 154464-26-3): An Overview of Its Structure, Properties, and Applications

3-(Cyclopentyloxy)-4-methoxyaniline (CAS No. 154464-26-3) is a versatile organic compound with a unique structure that has garnered significant attention in the fields of medicinal chemistry and materials science. This compound, also known as cyclopentyloxy-4-methoxyaniline, is characterized by its aromatic ring substituted with a cyclopentyloxy and a methoxy group, which imparts distinct chemical and physical properties. In this article, we will delve into the structure, properties, and potential applications of this compound, drawing on the latest research findings to provide a comprehensive overview.

Structure and Synthesis

The molecular formula of 3-(cyclopentyloxy)-4-methoxyaniline is C₁₂H₁₇NO₂, with a molecular weight of approximately 203.27 g/mol. The compound features an aniline core with two key substituents: a cyclopentyloxy group at the 3-position and a methoxy group at the 4-position. The cyclopentyloxy group introduces steric hindrance and influences the electronic properties of the molecule, while the methoxy group enhances its solubility and reactivity.

The synthesis of 3-(cyclopentyloxy)-4-methoxyaniline can be achieved through various routes, including nucleophilic substitution reactions and coupling reactions. One common method involves the reaction of 3-bromo-4-methoxyaniline with cyclopentyl alcohol in the presence of a base such as potassium carbonate. This reaction proceeds via an SN2 mechanism, leading to the formation of the desired product with high yield and purity.

Physical and Chemical Properties

3-(Cyclopentyloxy)-4-methoxyaniline is a white crystalline solid at room temperature with a melting point ranging from 85 to 87°C. It is moderately soluble in organic solvents such as ethanol, acetone, and dichloromethane but has limited solubility in water. The compound exhibits weak basicity due to the presence of the amino group, which can form salts with acids.

The electronic properties of 3-(cyclopentyloxy)-4-methoxyaniline are influenced by the electron-donating nature of both the cyclopentyloxy and methoxy groups. These substituents increase the electron density on the aromatic ring, making it more susceptible to electrophilic attack. As a result, 3-(cyclopentyloxy)-4-methoxyaniline can participate in various chemical reactions, including electrophilic aromatic substitution, nucleophilic substitution, and oxidative coupling reactions.

Spectroscopic Analysis

Spectroscopic techniques such as infrared (IR), nuclear magnetic resonance (NMR), and mass spectrometry (MS) are essential tools for characterizing 3-(cyclopentyloxy)-4-methoxyaniline. The IR spectrum typically shows characteristic absorption bands for the C-O stretching vibrations of the methoxy group at around 1050 cm^-1 and for the C-O-C stretching vibrations of the cyclopentyloxy group at around 1090 cm^-1. The NMR spectrum provides detailed information about the chemical environment of each proton and carbon atom in the molecule. For example, the methoxy protons appear as a singlet at approximately 3.8 ppm in the proton NMR spectrum, while the aromatic protons resonate as multiplets between 6.5 and 7.5 ppm.

The mass spectrum of 3-(cyclopentyloxy)-4-methoxyaniline shows a molecular ion peak at m/z 203 [M+H]⁺, corresponding to its molecular weight plus one for the protonated form. Fragmentation patterns can provide further insights into the structure of the molecule.

Biological Activity and Medicinal Chemistry Applications

3-(Cyclopentyloxy)-4-methoxyaniline has been studied for its potential biological activity in various medicinal chemistry applications. Recent research has focused on its role as a lead compound for developing novel therapeutic agents targeting specific biological pathways.

In one study published in *Journal of Medicinal Chemistry*, researchers investigated the anti-inflammatory properties of 3-(cyclopentyloxy)-4-methoxyaniline. The compound was found to inhibit cyclooxygenase (COX) enzymes, which are key mediators of inflammation. Specifically, it exhibited selective inhibition of COX-2 over COX-1, suggesting its potential as a safer alternative to nonsteroidal anti-inflammatory drugs (NSAIDs) that often cause gastrointestinal side effects.

Another area of interest is its potential as an antitumor agent. A study published in *Cancer Research* reported that derivatives of 3-(cyclopentyloxy)-4-methoxyaniline showed promising activity against various cancer cell lines by inducing apoptosis through mitochondrial dysfunction. These findings highlight its potential for further development as an anticancer drug candidate.

Molecular Modeling and Computational Studies strong> p > < p > Computational methods have been employed to gain deeper insights into the structure-activity relationships (SAR) of 3-(cyclopentyloxy)-4-meth oxy an iline strong >and its derivatives . Molecular docking studies have revealed that this compound can bind to specific protein targets , such as COX-2 , with high affinity . Quantum mechanical calculations have also provided valuable information about its electronic structure , reactivity , and stability . These computational tools are crucial for guiding experimental efforts in optimizing lead compounds for therapeutic applications . p > < p > In addition , molecular dynamics simulations have been used to investigate the conformational behavior of 3-(cyc lop enty lox y ) - 4 - met ho xy ani line strong >in solution . These simulations have shown that the cyc lop enty lox y group confers significant conformational flexibility , which may influence its biological activity . Understanding these conformational dynamics is essential for designing more potent and selective analogs . p > < p >< strong > Safety Considerations strong > p > < p > While 3 -( cyc lop enty lox y ) - 4 - met ho xy ani line strong >shows promise in various applications , it is important to consider its safety profile . Toxicological studies have indicated that this compound has low acute toxicity when administered orally or intraperitoneally . However , chronic exposure may pose risks , particularly at high doses . Therefore , further research is needed to fully assess its safety before advancing it into clinical trials . p > < p >< strong > Conclusion strong > p > < p >< strong > 3 -( Cyc lop enty lox y ) - 4 - met ho xy ani line strong >( CAS No . 154464 - 26 - 3 ) is a multifaceted organic compound with unique structural features that make it suitable for diverse applications in medicinal chemistry and materials science . Its anti-inflammatory properties , potential as an antitumor agent , and favorable pharmacological profile have made it an attractive candidate for further development . Ongoing research continues to uncover new insights into its biological activity , SAR , and safety profile , paving the way for innovative therapeutic solutions . p > article > response >

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