2-Fluorophenyl 2-Nitrophenyl Ether: Lab Handling Guide

2-Fluorophenyl 2-nitrophenyl ether is a difunctionalized diaryl ether reagent bearing both an ortho-fluoro and an ortho-nitro substituent on opposing phenyl rings, making it a versatile electrophilic building block for nucleophilic aromatic substitution and related cross-coupling strategies in medicinal and materials chemistry research.

Chemical Name

2-Fluorophenyl 2-nitrophenyl ether

Product SKU

F354345

Santa Cruz Reference

sc-254251

Compound Class

Diaryl ether (diphenyl ether derivative)

Key Functional Groups

Aryl fluoride (C–F), nitro group (–NO₂), aryl ether (C–O–C)

Primary Application

Electrophilic building block in SNAr reactions and heterocyclic synthesis

Storage Recommendation

Cool, dry, well-ventilated area; away from heat, ignition sources, and incompatible oxidizers

Chemical Identity and Structure

2-Fluorophenyl 2-nitrophenyl ether is a diaryl ether in which a 2-fluorophenoxy group is connected via an oxygen bridge to a 2-nitrophenyl ring. The molecule therefore combines three distinct reactive handles: an electrophilically activated aryl C–F bond (ortho-fluorine rendered labile by the ether oxygen), a reducible nitro group susceptible to catalytic hydrogenation or chemical reduction, and the ether linkage itself, which can participate in transition-metal-catalyzed coupling reactions.

The simultaneous presence of electron-withdrawing groups (–F and –NO₂) in ortho positions on their respective rings makes each aromatic ring electron-deficient, facilitating nucleophilic aromatic substitution (SNAr) at either the C–F or C–O bond under appropriate conditions. This dual reactivity is exploited in the synthesis of benzoxazoles, phenoxazines, and other pharmaceutically relevant N- or O-heterocycles.

Catalog SKU: F354345 (Aladdin Scientific). Cross-referenced as sc-254251 in the Santa Cruz catalog.

Safe Handling and Personal Protective Equipment

As with all nitroaromatic and halogenated aromatic compounds, appropriate precautions must be observed when handling 2-Fluorophenyl 2-nitrophenyl ether. Researchers should consult the material's Safety Data Sheet (SDS) prior to use; the information below represents general best-practice guidance pending SDS verification.

• Personal Protective Equipment (PPE): Chemical-resistant gloves (nitrile or neoprene), safety spectacles or goggles, and a laboratory coat are the minimum requirements. Where dust or aerosol generation is possible, use a NIOSH-approved respirator.
• Ventilation: Handle exclusively in a certified fume hood. Nitroaromatic vapors can be hazardous upon prolonged inhalation.
• Skin and Eye Contact: In case of skin contact, wash immediately with soap and water for at least 15 minutes. In case of eye contact, irrigate with copious water and seek medical attention promptly.
• Ingestion/Inhalation: Do not eat, drink, or smoke in areas where the compound is used. If ingested, seek immediate medical attention.
• Spill Management: Absorb with an inert material (e.g., vermiculite, dry sand), collect in a sealed container, and dispose in accordance with local regulations for halogenated aromatic waste.

Note: Specific hazard classifications (GHS pictograms, H-statements, P-statements) should be confirmed from the official SDS provided at the time of purchase.

Storage Conditions and Stability

Proper storage is essential to preserve the purity and reactivity of 2-Fluorophenyl 2-nitrophenyl ether over the product's shelf life.

• Temperature: Store at room temperature (15–25 °C) or as specified on the product label. Avoid exposure to elevated temperatures that could promote decomposition of the nitro group.
• Light: Nitroaromatic compounds may be light-sensitive. Storage in amber glass or opaque containers and away from direct sunlight is recommended.
• Moisture: Keep the container tightly closed in a dry environment. Desiccants such as silica gel may be appropriate for long-term storage.
• Incompatibilities: Keep away from strong reducing agents, strong bases, and oxidizing agents. The aryl fluoride is susceptible to nucleophilic displacement under basic aqueous conditions; avoid prolonged contact with strong aqueous alkali.
• Container integrity: Inspect the container seal before each use. Re-seal immediately after dispensing to minimize moisture uptake and vapor loss.

Specific confirmed storage parameters (e.g., exact melting point, recommended long-term temperature) should be verified against the certificate of analysis (CoA) supplied with the product.

Synthetic Applications and Reactivity

The bifunctional nature of 2-Fluorophenyl 2-nitrophenyl ether makes it a valuable intermediate across several synthetic strategies:

1. Nucleophilic Aromatic Substitution (SNAr)

The C–F bond on the 2-fluorophenyl ring is activated toward SNAr by the flanking ether oxygen and any additional electron-withdrawing groups present in the reaction context. Nitrogen, oxygen, and sulfur nucleophiles can displace fluoride under mild-to-moderate conditions, providing rapid access to unsymmetrical diaryl ethers, diaryl thioethers, and diarylamines.

2. Nitro Group Reduction and Cyclization

Reduction of the ortho-nitro group to an amine (via H₂/Pd-C, SnCl₂, or Fe/AcOH) in the presence of the adjacent ether oxygen sets up spontaneous or acid-assisted cyclization to afford benzoxazole or phenoxazinone scaffolds — privileged frameworks in medicinal chemistry and materials science.

3. Transition-Metal-Catalyzed Coupling

The aryl ether C–O bond can serve as an electrophilic partner in nickel- or palladium-catalyzed cross-coupling reactions (e.g., Suzuki-Miyaura, Kumada, or Negishi-type reactions with appropriate catalytic systems), enabling further diversification of the aromatic framework.

4. Use as a Protecting-Group Surrogate

The 2-nitrophenyl ether motif is employed as a photolabile or reductively labile protecting group for phenols in multi-step synthesis, adding flexibility in orthogonal deprotection strategies.

Researchers should validate reaction conditions with small-scale optimization experiments before committing to preparative-scale procedures.

Quality, Purity, and Procurement Guidance

When ordering 2-Fluorophenyl 2-nitrophenyl ether from Aladdin Scientific (SKU: F354345), the following quality considerations are recommended:

• Certificate of Analysis (CoA): Request or download the batch-specific CoA to confirm purity (typically assessed by GC or HPLC), appearance, and any spectroscopic identity confirmation (e.g., NMR, MS).
• Purity Grade: For synthetic applications where high stereochemical fidelity or low impurity tolerance is required, select the highest available purity grade. Confirm the stated purity grade meets your experimental acceptance criteria before use.
• Quantity Selection: The reagent is typically available in gram-scale quantities suitable for laboratory-scale synthesis. Consider ordering only what is required within a reasonable time frame to avoid extended storage and potential degradation.
• Cross-Reference: This product is cross-referenced to sc-254251 in the Santa Cruz reagent catalog, which may be useful for literature or protocol cross-checking.
• Shipping and Handling: Ensure your institution's receiving team is aware of standard protocols for accepting chemical reagents, including appropriate documentation and inspection upon receipt.

For questions about availability, pricing, or bulk quantities, contact Aladdin Scientific's technical sales team directly.

Frequently asked questions

What is 2-Fluorophenyl 2-nitrophenyl ether used for in organic synthesis?

It serves primarily as a bifunctional electrophilic building block. The activated aryl C–F bond undergoes nucleophilic aromatic substitution (SNAr) with N-, O-, and S-nucleophiles, while the ortho-nitro group can be reduced to an amine and cyclized to afford heterocyclic scaffolds such as benzoxazoles. Together, these functionalities enable rapid construction of complex diaryl ether-based frameworks relevant to medicinal chemistry and materials science.

How should I store 2-Fluorophenyl 2-nitrophenyl ether to maintain its integrity?

Store the compound in a tightly sealed container in a cool (15–25 °C), dry, and well-ventilated location away from direct light, heat, strong reducing agents, strong bases, and oxidizers. Amber or opaque containers are preferable to minimize photodegradation. Always verify specific storage conditions on the batch Certificate of Analysis.

What personal protective equipment (PPE) is required when handling this reagent?

At minimum, wear chemical-resistant gloves (nitrile or neoprene), safety goggles, and a laboratory coat. All manipulations should be conducted inside a certified fume hood. If dust or aerosol generation is anticipated, use a NIOSH-approved respirator. Always consult the SDS for the official hazard classification before first use.

Is 2-Fluorophenyl 2-nitrophenyl ether the same product as sc-254251 from Santa Cruz?

Yes. The Aladdin Scientific SKU F354345 (2-Fluorophenyl 2-nitrophenyl ether) is cross-referenced to sc-254251 in the Santa Cruz reagent catalog. Researchers switching suppliers should confirm structural identity via the batch CoA (NMR, MS, or GC purity data) to ensure comparability with published protocols.

Can the C–O ether bond in this compound be cleaved under standard laboratory conditions?

Diaryl ethers are generally resistant to hydrolysis under neutral aqueous conditions. However, the electron-deficient nature of both rings in 2-Fluorophenyl 2-nitrophenyl ether increases susceptibility to cleavage under strongly basic conditions or via transition-metal-catalyzed reactions. Researchers using nickel or palladium catalysis should be aware that C–O bond activation is possible and may be a desired or undesired pathway depending on the synthetic goal.

References

1. Aladdin Scientific product listing: 2-Fluorophenyl 2-nitrophenyl ether, SKU F354345.
2. Santa Cruz Biotechnology reagent catalog entry sc-254251 (cross-reference to F354345).
3. March, J. Advanced Organic Chemistry: Reactions, Mechanisms, and Structure. 4th ed. Wiley-Interscience, 1992. (General SNAr reactivity of activated aryl fluorides.)
4. Clayden, J.; Greeves, N.; Warren, S. Organic Chemistry. 2nd ed. Oxford University Press, 2012. (Nitro group reduction and heterocycle formation.)
5. Tobisu, M.; Chatani, N. Cross-Couplings Using Aryl Ethers via C–O Bond Activation Enabled by Nickel Catalysts. Acc. Chem. Res. 2015, 48, 1717–1726. doi:10.1021/acs.accounts.5b00051

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