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• 3. An amino group functionalized metal–organic framework as a luminescent probe for highly selective sensing of Fe3+ ions?
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• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Pyridines and derivatives Pyridine carboxaldehydes

6-Aminopyridine-2-Carbaldehyde (CAS No. 332884-35-2): An Overview of Its Properties, Applications, and Recent Research Developments

6-Aminopyridine-2-carbaldehyde (CAS No. 332884-35-2) is a versatile organic compound that has garnered significant attention in the fields of chemistry, biology, and pharmaceutical research. This compound, also known as 2-formyl-6-aminopyridine, is a key intermediate in the synthesis of various bioactive molecules and pharmaceuticals. Its unique chemical structure and reactivity make it an essential building block in the development of novel therapeutic agents and functional materials.

The molecular formula of 6-aminopyridine-2-carbaldehyde is C₇H₇N₂O, with a molecular weight of approximately 137.14 g/mol. The compound features a pyridine ring with an amino group at the 6-position and an aldehyde group at the 2-position. This combination of functional groups imparts 6-aminopyridine-2-carbaldehyde with unique chemical properties, making it highly reactive and useful in a variety of synthetic transformations.

In recent years, 6-aminopyridine-2-carbaldehyde has been extensively studied for its potential applications in medicinal chemistry. One of the key areas of interest is its use as a precursor in the synthesis of antitumor agents. For instance, researchers have explored the synthesis of pyrido[2,3-d]pyrimidinones, which are known to exhibit potent antitumor activity against various cancer cell lines. These compounds are derived from 6-aminopyridine-2-carbaldehyde through a series of well-defined synthetic steps, including condensation reactions and cyclizations.

Beyond its role in drug discovery, 6-aminopyridine-2-carbaldehyde has also found applications in the development of fluorescent probes for biological imaging. The presence of the aldehyde group allows for easy conjugation with fluorescent dyes or other functional moieties, making it a valuable tool in the study of cellular processes and protein interactions. Recent studies have demonstrated the utility of 6-aminopyridine-2-carbaldehyde derivatives as selective probes for detecting specific biomolecules in living cells.

The synthetic versatility of 6-aminopyridine-2-carbaldehyde has also led to its use in the preparation of ligands for metal complexes. These complexes have shown promise in catalytic applications, particularly in asymmetric synthesis and homogeneous catalysis. For example, researchers have developed palladium complexes containing 6-aminopyridine-2-carbaldehyde ligands that exhibit high enantioselectivity in the catalytic hydrogenation of ketones.

In addition to its synthetic applications, 6-aminopyridine-2-carbaldehyde has been investigated for its potential as a photosensitizer in photodynamic therapy (PDT). PDT is a non-invasive treatment modality that involves the use of light to activate photosensitizers, leading to the generation of reactive oxygen species (ROS) that can selectively destroy cancer cells. Studies have shown that 6-aminopyridine-2-carbaldehyde derivatives can efficiently absorb light and generate ROS, making them promising candidates for PDT applications.

The physical properties of 6-aminopyridine-2-carbaldehyde are also noteworthy. It is a solid at room temperature with a melting point ranging from 105°C to 107°C. The compound is moderately soluble in common organic solvents such as ethanol and dimethyl sulfoxide (DMSO), but it has limited solubility in water. These properties make it suitable for various synthetic procedures and analytical techniques.

From a safety perspective, while 6-aminopyridine-2-carbaldehyde is not classified as a hazardous material under current regulations, it is important to handle it with care due to its reactivity and potential health effects. Proper personal protective equipment (PPE) should be used when handling this compound to minimize exposure risks.

In conclusion, 6-Aminopyridine-2-Carbaldehyde (CAS No. 332884-35-2) is a multifaceted compound with significant potential in various scientific and industrial applications. Its unique chemical structure and reactivity make it an invaluable tool in medicinal chemistry, materials science, and catalysis research. As ongoing research continues to uncover new applications and properties, 6-Aminopyridine-2-Carbaldehyde is likely to remain an important compound in the scientific community for years to come.

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