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• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Diazines Pyrimidines and pyrimidine derivatives Pyrimidinecarboxylic acids and derivatives

Pyrimidine-4-carbonyl Chloride (CAS 184951-32-4)

Pyrimidine-4-carbonyl Chloride, a versatile carbonyl chloride derivative, is a heterocyclic compound with significant applications in organic synthesis and medicinal chemistry. Structurally characterized by a chlorinated carbonyl group attached to the pyrimidine ring at the 4-position, this molecule belongs to the broader class of pyrimidine-based compounds, which are widely recognized for their structural diversity and biological relevance. Recent advancements in synthetic methodologies have highlighted its role as an efficient reagent in forming amide bonds under mild conditions, particularly in the construction of peptidomimetics and bioactive scaffolds.

In terms of chemical properties, Pyrimidine-4-carbonyl Chloride exhibits notable reactivity due to the electrophilic nature of its carbonyl chloride functional group. This property facilitates nucleophilic substitution reactions with amines, alcohols, and thiols, enabling precise control over molecular architecture during synthesis. A study published in Journal of Medicinal Chemistry (2023) demonstrated its utility in synthesizing novel inhibitors targeting protein-protein interactions (PPIs), where the chloroformyl moiety served as a key electrophilic center for conjugation with peptide-based ligands. The pyrimidine core’s planar geometry and electron-withdrawing characteristics further enhance its ability to modulate physicochemical properties of resultant compounds, making it valuable for optimizing drug-like attributes such as lipophilicity and metabolic stability.

Recent research has expanded its application beyond traditional organic synthesis into advanced materials science. A collaborative effort between chemists at Stanford University and MIT (Nature Communications, 2023) revealed that this compound can be employed as a crosslinking agent in the fabrication of stimuli-responsive hydrogels. By incorporating Pyrimidine-4-carbonyl Chloride-functionalized monomers into polymer networks, researchers achieved pH-sensitive gel systems with tunable swelling behavior—a critical feature for drug delivery applications requiring controlled release mechanisms. The pyrimidine ring’s inherent rigidity contributes to maintaining structural integrity under varying environmental conditions, while the carbonyl chloride group enables efficient covalent bonding during polymerization.

In pharmacological contexts, this compound has been pivotal in developing targeted therapies through post-translational modification mimics. A 2023 paper in Angewandte Chemie International Edition described its use in synthesizing acylating agents that selectively modify lysine residues on histone proteins. These agents facilitated epigenetic studies by creating site-specific modifications analogous to natural processes, offering insights into chromatin remodeling pathways linked to cancer progression. The unique reactivity profile of CAS 184951-32-4, combined with its compatibility with solid-phase peptide synthesis (SPPS), allows for high-throughput screening of histone-modifying compounds—a critical step in accelerating drug discovery pipelines.

The compound’s role in asymmetric synthesis has also gained traction following breakthroughs reported in American Chemical Society Catalysis. Researchers successfully utilized chiral catalysts with Pyrimidine-4-carbonyl Chloride to achieve enantioselective Michael additions, yielding optically pure intermediates for chiral pharmaceutical development. This method reduces waste compared to traditional resolution techniques and exemplifies how functionalized pyrimidines are driving sustainable synthetic practices within the industry.

In analytical chemistry, recent innovations leverage this compound’s reactivity for derivatization strategies enhancing detection sensitivity. A 2023 methodology published in Analytical Chemistry demonstrated that coupling CAS 184951-32-4 with analytes prior to mass spectrometry analysis significantly improves ionization efficiency—a breakthrough for trace-level quantification of biomolecules like neurotransmitters or metabolites. The pyrimidine moiety’s UV-absorbing properties further enable fluorescence-based detection systems when incorporated into sensor platforms.

Safety considerations remain paramount despite its non-regulated status under current classifications. Proper handling protocols emphasize maintaining anhydrous conditions during storage due to its susceptibility to hydrolysis—a characteristic validated through thermodynamic studies published in Crystal Growth & Design (2023). While not classified as a hazardous material per international standards, standard precautions such as glove use and fume hood operation are advised when handling large quantities or conducting multi-step syntheses involving this intermediate.

Synthetic routes continue to evolve with green chemistry principles gaining prominence. A notable advancement from ETH Zurich (ChemSusChem, 2023) introduced a solvent-free microwave-assisted synthesis pathway using solid-state phase transfer catalysts. This method achieves high yields (>95%) while eliminating volatile organic solvents typically required for carbonyl chloride activation steps—aligning with modern industrial demands for eco-friendly production processes without compromising purity or scalability.

Bioconjugation applications have seen renewed interest through its integration into click chemistry frameworks. A study featured in Chemical Science (RSC 2023) showcased its compatibility with strain-promoted azide–alkyne cycloadditions when tethered onto bioorthogonal handles within biological systems. This approach enables real-time monitoring of cellular processes via fluorescent tagging while minimizing off-target reactions—a critical advantage over conventional crosslinking agents lacking such specificity.

In semiconductor research, derivatives formed from CAS 184951-32-4-mediated reactions have shown promise as hole transport materials (HTMs). Collaborative work between KAIST and Samsung Advanced Institute (Advanced Materials 2023) demonstrated that pyrimidine-functionalized HTMs exhibit superior charge carrier mobility compared to traditional triazole-based analogs when used in perovskite solar cells. The carbonyl chloride’s ability to form stable N–C bonds during polymerization contributes to enhanced thermal stability—critical for device longevity under operational conditions.

Clinical relevance emerges from ongoing investigations into anti-inflammatory drug design using this compound as a building block. Researchers at Johns Hopkins University recently reported successful synthesis of nonsteroidal anti-inflammatory agents containing pyrimidine scaffolds functionalized via carbonylation reactions involving CAS 184951-32-4 (Bioorganic & Medicinal Chemistry Letters, 2023). These compounds exhibited COX enzyme selectivity profiles comparable to celecoxib while demonstrating improved solubility characteristics through rational functional group placement guided by computational modeling.

The molecule’s structural flexibility allows it to serve dual roles depending on reaction conditions: acting as both an acylating agent and a precursor for nitrogen-containing heterocycles when subjected to cyclization protocols under controlled pH environments (Tetrahedron Letters, 2023). Such bifunctional capabilities make it indispensable for constructing complex molecules like anticancer nucleosides where simultaneous introduction of multiple functionalities is required without excessive purification steps.

Spectroscopic characterization techniques continue refining our understanding of this compound’s behavior at molecular level. Solid-state NMR studies conducted at Oxford University revealed unexpected conformational preferences when CAS 184951-32-4 is incorporated into polymeric matrices (JACS Au, 2023). These findings suggest potential applications in shape-persistent organic frameworks where precise spatial arrangement is essential for catalytic activity or gas adsorption properties—opening new avenues for materials engineering research.

In nanotechnology applications, recent work highlighted its utility in fabricating graphene oxide functionalized composites (Nano Letters, 2023). By covalently attaching pyrimidine-containing polymers via carbamoylation reactions initiated by CAS 184951-32-4 groups onto graphene surfaces, scientists created hybrid materials exhibiting enhanced electrical conductivity and biocompatibility—properties highly sought after for wearable biosensors and flexible electronic devices requiring biofunctional interfaces.

Sustainable agricultural solutions are emerging through its involvement in herbicide development programs at Syngenta Research (Pest Management Science,

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• 503177-82-0(4-Pyrimidinecarbonyl chloride, 2-(methylthio)-)
• 306960-81-6(4-Pyrimidinecarbonylchloride, 2-chloro-6-methyl-)
• 137150-91-5(2,4-Pyrimidinedicarbonyl dichloride (9CI))
• 263270-52-6(6-chloropyrimidine-4-carbonyl chloride)
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