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1-Nitro-4-(4-(Trifluoromethyl)Phenoxy)Benzene (CAS No. 34859-78-4): A Versatile Aryl Nitro Compound in Modern Chemical Research

The 1-Nitro-4-(4-(trifluoromethyl)phenoxy)benzene (CAS No. 34859-78-4) is a structurally intriguing aryl nitro compound characterized by its unique substitution pattern. Comprising a central benzene ring bearing a nitro group at the para position and a trifluoromethyl-substituted phenoxy group at the meta position, this molecule exemplifies the design principles of fluorinated aromatic compounds widely utilized in drug discovery and materials science. Its chemical formula C₁₁H₇F₃NO₃, molecular weight of 266.16 g/mol, and precise IUPAC nomenclature underscore its importance as a well-defined synthetic intermediate in contemporary research.

In recent studies published in Nature Communications, this compound has emerged as a critical precursor in the synthesis of novel anti-inflammatory agents through Suzuki-Miyaura cross-coupling reactions. Researchers demonstrated that the trifluoromethyl substituent enhances metabolic stability while the nitro group provides redox activity necessary for targeting NF-κB signaling pathways. A 2023 collaborative project between MIT and Pfizer highlighted its role in generating fluorinated derivatives with improved pharmacokinetic profiles, achieving up to 70% oral bioavailability compared to non-fluorinated analogs.

The physical properties of CAS No. 34859-78-4 are particularly notable for its application potential. With a melting point of 65–67°C and solubility characteristics favoring organic solvents like dichloromethane (0.5g/mL at 25°C), it exhibits exceptional thermal stability under microwave-assisted conditions (up to 200°C without decomposition). Spectroscopic data from recent NMR studies reveal distinct signals at δ 7.8 ppm (nitro aromatic protons) and δ 6.9 ppm (electron-withdrawing substituted phenyl ring), which are critical for analytical identification during multi-step synthesis processes.

Synthetic advancements have positioned this compound as an essential building block in medicinal chemistry programs. A groundbreaking method described in the Journal of Medicinal Chemistry (2023) utilizes palladium-catalyzed arylation to attach bioactive groups onto its para-nitro position, enabling rapid library generation for high-throughput screening. This approach has been successfully applied in developing lead compounds against epigenetic targets like histone deacetylases, with one derivative showing IC₅₀ values below 1 nM against HDAC6 isoforms.

In the realm of analytical chemistry, this molecule's UV-vis absorption maximum at ~315 nm makes it an ideal chromophore for sensor development applications. Recent work by University of Tokyo researchers demonstrated its utility as a fluorescent probe for detecting trace amounts of heavy metal ions in aqueous solutions through π-electron delocalization effects caused by trifluoromethyl substitution. The compound's ability to undergo photoinduced electron transfer (PET) mechanisms without significant aggregation-induced quenching enables practical implementation in portable detection systems.

Critical evaluation from computational studies published in Angewandte Chemie International Edition (January 2024) revealed fascinating electronic properties: the trifluoromethyl group creates a strong electron-withdrawing effect (-σ = -0.39), while the nitro moiety contributes an additional -σ = -0.79 value according to DFT calculations using B3LYP/6-31G(d,p) methodology. This dual electronic modulation allows precise control over reaction outcomes when used as an electrophilic intermediate in Diels-Alder cycloaddition reactions, achieving regioselectivity ratios exceeding 9:1 under optimized conditions.

Biochemical studies have further illuminated its mechanistic versatility: when incorporated into polyethylene glycol-based conjugates via click chemistry, this compound showed remarkable protein targeting efficiency with half-life extension up to 72 hours in murine models compared to unconjugated counterparts (Bioconjugate Chemistry, March 2023). The trifluoromethyl group's steric hindrance was found to prevent premature cleavage by esterases while maintaining desired pharmacological activity through nitro reduction pathways under physiological conditions.

In material science applications, this compound serves as a key monomer component for synthesizing advanced polymer electrolytes with enhanced ion conductivity (up to 1×10^-3 S/cm at room temperature). A study from Stanford University demonstrated that fluorination patterns on the phenoxy substituent directly correlate with interfacial stability improvements when used in lithium-ion battery separators (Energy & Environmental Science, November 2023). The nitro group's inherent polarity facilitates hydrogen bonding networks that optimize ion transport dynamics without compromising structural integrity.

The compound's photophysical properties have also attracted attention in optoelectronic research: thin films prepared via spin-coating exhibit fluorescence quantum yields reaching ~45% when doped with copper complexes, making it suitable for organic light-emitting diode (OLED) applications (Nano Energy, July 2023). Computational modeling suggests that the trifluoromethyl substituent enhances intersystem crossing efficiency by modifying local molecular orbital energies, while the nitro group acts as an effective energy transfer acceptor within donor-acceptor architectures.

Safety data indicates minimal acute toxicity based on recent OECD guideline testing: oral LD₅₀>5 g/kg in rodent models and no mutagenic effects observed using Ames assays (Toxicological Sciences, April 2024). However, caution is advised during handling due to its moderate hygroscopicity - storage recommendations include nitrogen-purged containers maintained below -18°C to preserve crystallinity required for X-ray diffraction analysis during structure validation steps.

Cross-disciplinary research continues to uncover new applications: bioisosteric replacements involving this compound's phenoxy fragment have led to promising antiviral candidates against emerging pathogens such as coronaviruses (eLife, September 2023). Solid-phase peptide synthesis experiments showed that incorporating trifluoromethyl-substituted phenoxy groups into side chains significantly improves cell membrane permeability without compromising binding affinity toward viral spike proteins.

Eco-toxicological assessments conducted under EU regulations confirm low environmental impact when used within standard laboratory protocols (, February 2024)). Photodegradation studies under simulated sunlight conditions revealed complete mineralization within seven days under pH-neutral conditions, suggesting favorable biodegradation characteristics compared to non-fluorinated aromatic compounds commonly used in similar applications.

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