4-(3-Formylphenoxy)benzonitrile: Properties & Applications

4-(3-Formylphenoxy)benzonitrile is a bifunctional aromatic building block bearing both an aldehyde and a nitrile group, making it a versatile intermediate for organic synthesis and medicinal chemistry research.

IUPAC Name

4-(3-Formylphenoxy)benzonitrile

SKU

B727406

Functional Groups

Aldehyde (–CHO) and nitrile (–CN) with a diaryl ether linkage

Molecular Framework

Diaryl ether with meta-aldehyde and para-nitrile substitution pattern

Primary Use

Organic synthesis intermediate and medicinal chemistry building block

Supplier

Aladdin Scientific

Chemical Structure and Key Features

4-(3-Formylphenoxy)benzonitrile belongs to the class of diaryl ether compounds. Its molecular architecture consists of two phenyl rings bridged by an oxygen atom (the ether linkage), with an aldehyde substituent at the meta position of one ring and a nitrile substituent at the para position of the other ring.

The coexistence of two electrophilically active yet orthogonally reactive functional groups — the aldehyde (–CHO) and the nitrile (–CN) — within a single molecule offers synthetic chemists multiple handles for selective transformations. The aldehyde group is amenable to condensation reactions, reductive amination, Wittig olefination, and imine formation, while the nitrile group can undergo hydrolysis to carboxylic acids or amides, cycloaddition reactions, or reduction to primary amines, depending on reaction conditions.

The diaryl ether scaffold itself confers planarity, metabolic stability relative to biaryl systems lacking the oxygen bridge, and tuneable electronic properties through the conjugated aromatic system.

Synthesis and Preparation Considerations

Diaryl ethers of this type are commonly prepared via nucleophilic aromatic substitution (SNAr) or copper-catalyzed Ullmann-type etherification reactions. In SNAr approaches, an activated aryl fluoride or aryl chloride bearing an electron-withdrawing group (such as the nitrile at the para position) reacts with a phenol nucleophile under mild base conditions to afford the diaryl ether product.

Alternatively, palladium- or copper-catalyzed C–O coupling reactions between aryl halides and phenols provide complementary routes, often proceeding under milder conditions and tolerating a broader range of functional groups. The orthogonality of the aldehyde and nitrile groups must be considered when selecting protecting-group strategies in multi-step sequences.

Researchers should handle the compound with appropriate laboratory precautions — working in a well-ventilated fume hood, wearing suitable personal protective equipment — and consult the Safety Data Sheet (SDS) provided by Aladdin Scientific prior to use.

Research and Application Areas

The bifunctional nature of 4-(3-Formylphenoxy)benzonitrile makes it a valuable intermediate across several research domains:

• Medicinal Chemistry: Diaryl ether scaffolds are found in a range of biologically active compounds. The aldehyde and nitrile handles allow rapid generation of analogue libraries via condensation chemistry (e.g., Schiff base formation, Knoevenagel condensation) or cyclisation reactions to access heterocyclic drug-like scaffolds such as oxazoles, imidazoles, and pyrimidines.
• Materials Science: Nitrile-containing aromatic compounds are used in liquid crystal formulations, organic semiconductors, and fluorescent probes. The extended pi-conjugation through the diaryl ether system may contribute to useful optical properties.
• Supramolecular Chemistry: The dual hydrogen-bond acceptor capacity (aldehyde oxygen, nitrile nitrogen) and the rigid diaryl ether backbone make this compound a useful building block in the design of supramolecular assemblies and coordination polymers.
• Agrochemical Research: Diaryl ether motifs appear in several herbicide and fungicide classes, and bifunctional aldehydes are useful intermediates in that synthesis space.

Storage, Handling, and Quality

As with most aromatic aldehyde reagents, 4-(3-Formylphenoxy)benzonitrile should be stored in a cool, dry place away from direct light and moisture to prevent oxidation of the aldehyde functionality and ensure long-term stability. Airtight container storage under inert atmosphere (nitrogen or argon) is recommended for extended storage periods.

Aladdin Scientific supplies this compound (SKU B727406) at research-grade purity. Researchers should verify the certificate of analysis (CoA) for the specific lot prior to use in critical experiments. Purity is typically assessed by HPLC, NMR spectroscopy, or a combination thereof. Specific purity values and analytical data are available in the lot-specific CoA accessible through the Aladdin Scientific website or upon request.

For any questions regarding specification, grade, or purity of this reagent, customers are encouraged to contact Aladdin Scientific technical support.

Frequently asked questions

What functional groups does 4-(3-Formylphenoxy)benzonitrile contain, and why are they useful in synthesis?

The compound contains an aldehyde (–CHO) and a nitrile (–CN) group linked through a diaryl ether backbone. These two orthogonally reactive groups allow chemists to perform selective transformations at either site — for example, condensation or reductive amination at the aldehyde, and hydrolysis, reduction, or cycloaddition at the nitrile — making it a highly versatile bifunctional building block for multi-step synthesis.

How should 4-(3-Formylphenoxy)benzonitrile be stored to maintain its stability?

This reagent should be stored in a cool, dry location protected from light and moisture. For extended storage, keeping the compound in an airtight container under an inert atmosphere such as nitrogen or argon is recommended to prevent oxidation of the aldehyde group. Always refer to the Aladdin Scientific Safety Data Sheet and Certificate of Analysis for lot-specific guidance.

What are the typical research applications of diaryl ether aldehydes like this compound?

Diaryl ether aldehydes are widely used as intermediates in medicinal chemistry for the synthesis of heterocyclic scaffolds, in materials science for the preparation of liquid crystals and organic semiconductors, and in agrochemical research. The combination of the diaryl ether motif with both aldehyde and nitrile reactivity makes 4-(3-Formylphenoxy)benzonitrile particularly attractive for building complex molecular architectures in drug discovery and supramolecular chemistry programmes.

Where can I find purity and analytical data for SKU B727406?

Lot-specific purity data and analytical characterisation (such as HPLC and NMR data) for SKU B727406 are available on the Aladdin Scientific website under the product listing or can be obtained upon request from Aladdin Scientific technical support. Always verify the Certificate of Analysis for your specific lot before use.

References

1. March, J. Advanced Organic Chemistry: Reactions, Mechanisms, and Structure. Wiley-Interscience. General reference for aldehyde and nitrile chemistry.
2. Beletskaya, I. P.; Cheprakov, A. V. The complementary competitors: palladium and copper in C-N and C-O cross-coupling reactions. Coordination Chemistry Reviews. General reference for diaryl ether synthesis via cross-coupling.
3. Aladdin Scientific. Product Certificate of Analysis for 4-(3-Formylphenoxy)benzonitrile, SKU B727406. Aladdin Scientific internal document.

Products are supplied for research and development use only. Not for use in humans, animals, diagnosis, or therapy.