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• Solvents and Organic Chemicals Organic Compounds Organic oxygen compounds Organooxygen compounds Ketones
• Solvents and Organic Chemicals Organic Compounds Organic oxygen compounds Organooxygen compounds Carbonyl compounds Ketones

Introduction to 1-(1,3-Diethyl-1H-pyrazol-5-yl)ethan-1-one (CAS No. 1504704-84-0)

1-(1,3-Diethyl-1H-pyrazol-5-yl)ethan-1-one, identified by the Chemical Abstracts Service Number (CAS No.) 1504704-84-0, is a significant compound in the realm of pharmaceutical chemistry and bioorganic synthesis. This heterocyclic ketone derivative features a pyrazole core substituted with ethyl groups at the 1 and 3 positions, coupled with an acetyl moiety at the 5-position. The unique structural configuration of this molecule imparts distinct chemical and biological properties, making it a valuable intermediate in the development of novel therapeutic agents.

The pyrazole scaffold is renowned for its broad utility in medicinal chemistry due to its ability to engage in multiple hydrogen bonding interactions and its inherent stability. The introduction of ethyl groups at the 1 and 3 positions of the pyrazole ring enhances lipophilicity while maintaining solubility, a critical balance for drug-like properties. The acetyl group at the 5-position serves as a versatile handle for further functionalization, enabling the synthesis of more complex derivatives.

Recent advancements in computational chemistry have highlighted the potential of 1-(1,3-diethyl-1H-pyrazol-5-yl)ethan-1-one as a key building block in designing small-molecule inhibitors targeting protein-protein interactions. Studies indicate that modifications to this core structure can modulate binding affinities and selectivity, making it particularly relevant for developing treatments against inflammatory diseases and cancer. The compound’s ability to interact with biological macromolecules via its pyrazole ring has sparked interest in its role as a pharmacophore.

In vitro investigations have demonstrated that derivatives of 1-(1,3-diethyl-1H-pyrazol-5-yl)ethan-1-one exhibit promising antimicrobial and anti-inflammatory activities. The ethyl substituents contribute to enhanced permeability across biological membranes, while the acetyl group facilitates further derivatization into more potent bioactive molecules. Researchers are exploring its potential as a precursor for kinase inhibitors, given the pyrazole’s capacity to disrupt aberrant signaling pathways in oncology.

The synthesis of 1-(1,3-diethyl-1H-pyrazol-5-yl)ethan-1-one typically involves multi-step organic transformations, starting from commercially available pyrazole derivatives. Palladium-catalyzed cross-coupling reactions are often employed to introduce the ethyl groups efficiently. Advances in green chemistry have also led to more sustainable synthetic routes, minimizing waste and improving yields—a critical consideration in industrial-scale production.

From a regulatory perspective, this compound does not fall under restricted categories but remains subject to standard Good Manufacturing Practices (GMP) for pharmaceutical intermediates. Its handling requires adherence to standard laboratory safety protocols due to its reactivity and potential skin/eye irritation upon direct exposure. As research progresses, CAS No. 1504704-84-0 will continue to be referenced in academic publications and patent literature.

The integration of machine learning models into drug discovery pipelines has accelerated the identification of novel derivatives of 1-(1,3-diethyl-1H-pyrazol-5-yl)ethan-1-one with enhanced pharmacological profiles. Predictive algorithms leverage structural data from existing compounds to suggest modifications that could improve efficacy or reduce toxicity. This synergy between experimental chemistry and computational methods underscores the compound’s significance in modern medicinal chemistry.

In conclusion, 1-(1,3-diethyl-1H-pyrazol-5-yl)ethan-1-one represents a versatile intermediate with broad applications in pharmaceutical research. Its unique structural features—combining lipophilicity-enhancing ethyl groups with a reactive acetyl moiety—make it an attractive candidate for further derivatization into next-generation therapeutics. As scientific understanding evolves, this compound will undoubtedly continue to play a pivotal role in advancing drug development across multiple therapeutic areas.

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