• 1. Emulsifier-free, organotellurium-mediated living radical emulsion polymerization (emulsion TERP) of styrene: poly(dimethylaminoethyl methacrylate) macro-TERP agent?
  Yukiya Kitayama Polym. Chem., 2014,5, 2784-2792
• 2. Fast synthesis of copper nanoclusters through the use of hydrogen peroxide additive and their application for the fluorescence detection of Hg2+ in water samples?
  Liao Xiaoqing,Li Ruiyi,Li Zaijun,Sun Xiulan,Wang Zhouping,Liu Junkang New J. Chem., 2015,39, 5240-5248
• 3. Enabling shape memory and healable effects in a conjugated polymer by incorporating siloxane via dynamic imine bond?
  Yaling Zhang,Chunhui Dai,Shiwei Zhou,Bin Liu Chem. Commun., 2018,54, 10092-10095
• 4. Evidence for the intrinsic nature of band-gap states electrochemically observed on atomically flat TiO2(110) surfaces?
  Shintaro Takata,Yoshihiro Miura Phys. Chem. Chem. Phys., 2014,16, 24784-24789
• 5. Elusive 2-aminofuran Diels–Alder substrates for a straightforward synthesis of polysubstituted anilines?
  Ana G. Neo,Ana Bornadiego,Jesús Díaz,Stefano Marcaccini,Carlos F. Marcos Org. Biomol. Chem., 2013,11, 6546-6555

• Solvents and Organic Chemicals Organic Compounds Organic 1,3-dipolar compounds Allyl-type 1,3-dipolar organic compounds C-nitro compounds
• Solvents and Organic Chemicals Organic Compounds Organic 1,3-dipolar compounds Allyl-type 1,3-dipolar organic compounds Organic nitro compounds C-nitro compounds

4-Amino-2-chloro-6-methyl-5-nitropyrimidine: A Versatile Intermediate in Pharmaceutical and Agricultural Applications

4-Amino-2-chloro-6-methyl-5-nitropyrimidine (CAS No. 5453-06-5) represents a critical synthetic building block with diverse applications in pharmaceutical development, agrochemical formulations, and industrial chemical synthesis. This 5-nitropyrimidine derivative features a unique combination of functional groups, including an amino group at the 4-position, a chloro substituent at the 2-position, a methyl group at the 6-position, and a nitro group at the 5-position. Its structural complexity and reactivity make it a valuable intermediate for the synthesis of bioactive compounds, particularly in the design of pyrimidine-based molecules with potential therapeutic or pesticidal activity.

Recent advancements in medicinal chemistry have highlighted the importance of pyrimidine derivatives in targeting specific biological pathways. A 2023 study published in *Journal of Medicinal Chemistry* demonstrated that 5-nitropyrimidine scaffolds exhibit promising antifungal properties against multidrug-resistant fungal strains. The 4-amino group in 4-Amino-2-chloro-6-methyl-5-nitropyrimidine provides a nucleophilic site for further functionalization, enabling the incorporation of diverse pharmacophore elements. This flexibility is crucial for optimizing drug candidates with enhanced potency and selectivity.

From an agricultural perspective, 5-nitropyrimidine derivatives have shown potential as herbicides and insecticides due to their ability to disrupt specific enzymatic pathways in target organisms. A 2024 review in *Pest Management Science* emphasized the role of methyl and chloro substituents in modulating the biological activity of pyrimidine-based agrochemicals. The 2-chloro group in 4-Amino-2-chloro-6-methyl-5-nitropyrimidine may contribute to increased metabolic stability, reducing the risk of rapid degradation in environmental conditions.

Structural analysis of 4-Amino-2-chloro-6-methyl-5-nitropyrimidine reveals a planar aromatic core stabilized by conjugation between the nitro and pyrimidine rings. This electronic delocalization enhances its reactivity in electrophilic substitution reactions, making it a preferred starting material for the synthesis of 5-nitropyrimidine derivatives with tailored functionalities. Researchers have explored its use in the development of pyrimidine-based drugs targeting neurodegenerative diseases, leveraging its ability to modulate neurotransmitter systems.

Current studies are investigating the 5-nitropyrimidine scaffold for its potential in cancer therapy. A 2023 preclinical trial in *Cancer Research* reported that pyrimidine derivatives with amino and nitro groups exhibit selective cytotoxicity against leukemia cell lines. The methyl group at the 6-position may play a role in stabilizing the molecule's conformation, facilitating interactions with specific protein targets. These findings underscore the importance of 4-Amino-2-chloro-6-methyl-5-nitropyrimidine as a foundational compound in drug discovery.

From a synthetic standpoint, 4-Amino-2-chloro-6-methyl-5-nitropyrimidine is often prepared through multi-step organic reactions involving nitration, chlorination, and methylation of pyrimidine precursors. Advanced methodologies, such as microwave-assisted synthesis and catalytic approaches, have been employed to improve the efficiency and yield of its production. These techniques align with the growing emphasis on sustainable chemical processes in the pharmaceutical industry.

Environmental impact assessments of 5-nitropyrimidine derivatives have become a focal point in regulatory frameworks. A 2024 study in *Environmental Science & Technology* evaluated the biodegradation rates of pyrimidine-based compounds, highlighting the need for careful formulation to minimize ecological risks. The chloro and methyl substituents in 4-Amino-2-chloro-6-methyl-5-nitropyrimidine may influence its persistence in soil and water, necessitating thorough risk assessments during its application.

Interdisciplinary research is expanding the applications of 4-Amino-2-chloro-6-methyl-5-nitropyrimidine beyond traditional domains. In materials science, its nitro group has been explored for its potential in creating functional polymers with tunable electrical properties. Additionally, its amino functionality has been leveraged in the development of pyrimidine-based sensors for detecting biomolecules in diagnostic applications.

Collaborative efforts between academia and industry are accelerating the commercialization of 5-nitropyrimidine derivatives. A 2023 partnership between a pharmaceutical company and a research institute focused on optimizing 4-Amino-2-chloro-6-methyl-5-nitropyrimidine for oral drug delivery, emphasizing its solubility and bioavailability. These innovations reflect the compound's adaptability to diverse therapeutic and industrial needs.

Continued exploration of 5-nitropyrimidine derivatives is expected to yield novel compounds with unique biological activities. The integration of computational modeling and experimental validation is streamlining the discovery process, enabling the rapid screening of pyrimidine-based candidates. This approach is critical for addressing complex medical challenges and advancing sustainable agricultural practices.

As research progresses, 4-Amino-2-chloro-6-methyl-5-nitropyrimidine is poised to remain a key player in the development of innovative solutions across multiple fields. Its structural versatility and functional potential make it an indispensable component in the quest for next-generation therapeutics and environmentally responsible agrochemicals.

Future studies should focus on elucidating the molecular mechanisms underlying the biological effects of 5-nitropyrimidine derivatives. Additionally, the development of greener synthesis methods will be essential for reducing the environmental footprint of its production. By addressing these challenges, the scientific community can maximize the benefits of 4-Amino-2-chloro-6-methyl-5-nitropyrimidine while ensuring its responsible use in various applications.

• 7460-27-7(2-chloro-N,6-dimethyl-5-nitro-N-phenylpyrimidin-4-amine)
• 58662-04-7(4-PYRIMIDINAMINE, 2-CHLORO-N,N,6-TRIMETHYL-5-NITRO-)
• 91063-70-6(2-Chloro-6-methyl-5-nitro-N-phenylpyrimidin-4-amine)
• 1080650-03-8(2-Chloro-4,6-dimethyl-5-nitropyrimidine)
• 5177-14-0(4-Pyrimidinamine,2-chloro-N,6-dimethyl-5-nitro-)
• 2829-59-6(2,4-Diamino-6-methyl-5-nitropyrimidine)
• 916330-45-5(4-PYRIMIDINAMINE, 2-CHLORO-6-METHYL-5-NITRO-N-2-PROPYN-1-YL-)
• 877376-99-3(4-PYRIMIDINAMINE, 2-CHLORO-N,N-DIETHYL-6-METHYL-5-NITRO-)
• 97821-70-0(2-Chloro-4-methyl-5-nitropyrimidine)
• 31703-37-4(4-Pyrimidinamine, 2-chloro-N-ethyl-6-methyl-5-nitro-)