[1,1':3',1''-Terphenyl]-2'-amine: Synthesis & Handling Protocol

[1,1':3',1''-Terphenyl]-2'-amine is a sterically demanding primary aromatic amine featuring a meta-terphenyl scaffold, valued as a versatile building block in organic synthesis, coordination chemistry, and functional materials development.

Product Name

[1,1':3',1''-Terphenyl]-2'-amine

SKU

T590472

Compound Class

Primary aromatic amine; meta-terphenyl derivative

Core Scaffold

1,3-Diphenyl-substituted aniline (meta-terphenyl)

Primary Application

Building block for organic synthesis, ligand precursors, and materials chemistry

Storage Recommendation

Store in a cool, dry place away from light and moisture; seal under inert atmosphere if opened

Compound Overview and Chemical Properties

[1,1':3',1''-Terphenyl]-2'-amine (SKU T590472) is a primary aromatic amine built on a meta-terphenyl (m-terphenyl) backbone, in which two flanking phenyl rings are attached at the 1- and 3-positions of a central phenyl ring that also bears an amino group at the 2-position. This ortho-amino substitution relative to the two flanking aryl rings creates a sterically hindered amine with distinctive steric and electronic properties.

The meta-terphenyl scaffold is widely recognized in coordination chemistry and materials science for its ability to enforce specific geometries around metal centers and to provide robust, crystalline frameworks. The free primary amine functionality makes T590472 suitable for condensation reactions, Buchwald–Hartwig amination coupling, imine/Schiff-base formation, and diazotization sequences.

Key physicochemical characteristics (verify against certificate of analysis):

• Molecular formula: C₁₈H₁₅N
• Molecular weight: approximately 245.32 g/mol
• Appearance: typically a white to off-white solid
• Solubility: soluble in common organic solvents (DCM, THF, ethyl acetate, toluene); limited aqueous solubility

Materials, Safety, and Pre-Experimental Preparation

Required materials:

• T590472 ([1,1':3',1''-Terphenyl]-2'-amine, Aladdin Scientific)
• Anhydrous organic solvents appropriate to the intended reaction (e.g., anhydrous THF, DCM, or toluene)
• Inert gas supply (nitrogen or argon) for moisture-sensitive operations
• Analytical balance (0.1 mg readability)
• Standard glassware: Schlenk flasks or round-bottom flasks with septum caps
• Personal protective equipment (PPE): lab coat, nitrile gloves, safety goggles

Safety considerations: As with all primary aromatic amines, handle T590472 with appropriate caution. Aromatic amines may present health hazards; avoid inhalation of dust or vapors and contact with skin and eyes. Consult the Safety Data Sheet (SDS) before use. Dispose of waste according to local regulations for aromatic amine-containing materials.

Pre-experimental checks:

1. Inspect the container for integrity and confirm the lot number matches the certificate of analysis (CoA).
2. Allow the reagent to equilibrate to room temperature before opening, particularly if stored cold, to minimize moisture condensation.
3. Verify purity by HPLC or NMR if the application is sensitive to impurities.

Step-by-Step Handling and Solution Preparation Protocol

The following general protocol describes how to weigh, dissolve, and prepare stock solutions of T590472 for use in synthetic reactions.

1. Weigh the reagent: Using a tared vessel on an analytical balance inside a fume hood, weigh the required amount of T590472. For solid transfers, use a spatula and minimize exposure time to ambient air.
2. Select the appropriate solvent: For most synthetic applications, dissolve T590472 in anhydrous DCM, THF, or toluene. For stock solutions, a concentration of 0.1–0.5 M is typical; adjust to your reaction requirements.
3. Dissolve: Add the weighed solid to a clean, dry flask. Add solvent slowly with gentle swirling or magnetic stirring. T590472 typically dissolves readily in the solvents listed above at room temperature. If needed, gentle warming (up to 40 °C) may assist dissolution.
4. Filter if necessary: If any particulates remain after dissolution, filter through a short plug of Celite or a 0.45 µm PTFE syringe filter.
5. Inert atmosphere: For reactions requiring strict exclusion of moisture or oxygen, perform all steps under nitrogen or argon using standard Schlenk technique.
6. Confirm concentration: For critical quantitative work, confirm solution concentration by gravimetric or spectroscopic methods.

Typical reaction applications:

• Imine/Schiff-base formation: React T590472 with an aldehyde in anhydrous ethanol or toluene in the presence of a dehydrating agent or molecular sieves.
• Acylation: Treat with acyl chloride or anhydride in DCM with a base (e.g., triethylamine) at 0 °C to room temperature.
• Pd-catalyzed cross-coupling: Use as an amine coupling partner in Buchwald–Hartwig reactions under standard conditions.

Storage, Stability, and Quality Control

Storage conditions: Store T590472 in its original tightly sealed container in a cool (15–25 °C), dry location away from direct light and incompatible materials (strong oxidizers, strong acids). If the container has been opened, reseal under an inert gas blanket to minimize oxidative degradation of the amine.

Stability: Primary aromatic amines can be susceptible to gradual oxidation upon prolonged exposure to air and light, potentially leading to discoloration. Solutions should be freshly prepared or stored under inert atmosphere. Consult the product CoA and SDS for confirmed shelf-life data.

Quality control checklist:

• Visual inspection: confirm white to off-white appearance; discard if heavily discolored.
• ¹H NMR (CDCl₃): verify characteristic aromatic proton signals and NH₂ resonance consistent with the expected structure.
• TLC: single spot under UV (254 nm) using an appropriate solvent system (e.g., 4:1 hexane/ethyl acetate).
• HPLC purity: target ≥95% purity for standard synthetic applications; higher purity may be required for sensitive catalytic or biological assays.
• Melting point: compare against literature or CoA value as an identity check.

Frequently asked questions

What solvents are recommended for dissolving [1,1':3',1''-Terphenyl]-2'-amine?

T590472 dissolves readily in common organic solvents such as dichloromethane (DCM), tetrahydrofuran (THF), toluene, and ethyl acetate. It has limited aqueous solubility. For moisture-sensitive reactions, use anhydrous grades of these solvents under an inert atmosphere.

How should [1,1':3',1''-Terphenyl]-2'-amine be stored to maintain stability?

Store the compound in its original tightly sealed container at room temperature (15–25 °C) in a cool, dry place away from light. After opening, reseal the container under an inert gas (nitrogen or argon) to prevent oxidative degradation of the primary amine. Consult the CoA for confirmed shelf-life information.

What reactions is [1,1':3',1''-Terphenyl]-2'-amine commonly used for?

This compound serves as a versatile building block in organic synthesis. Common applications include Schiff-base and imine formation with aldehydes or ketones, acylation with acyl chlorides or anhydrides, and palladium-catalyzed Buchwald–Hartwig C–N cross-coupling reactions. Its bulky meta-terphenyl scaffold is also exploited in coordination chemistry for ligand design around metal centers.

How can I verify the purity of T590472 upon receipt?

Check the certificate of analysis (CoA) provided with the shipment for reported purity, melting point, and spectral data. You can further confirm identity and purity by 1H NMR in CDCl3, TLC with UV visualization, and HPLC analysis. Visual inspection for color can serve as a quick preliminary check.

References

1. Aladdin Scientific Product Page: [1,1':3',1''-Terphenyl]-2'-amine, SKU T590472. Aladdin Scientific Corp.
2. General reference on meta-terphenyl chemistry and applications in coordination chemistry. To be identified and verified.
3. Buchwald, S. L. et al. Palladium-catalyzed amination of aryl halides. General reference — specific citation to be verified.

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