Overview and Chemical Properties

1-(Aminomethyl)-N,N-dimethylcyclobutanamine (SKU: N724879) is a cyclobutane-scaffold diamine reagent supplied by Aladdin Scientific. Its structure consists of a quaternary cyclobutane carbon bearing both an aminomethyl (–CH₂NH₂) pendant arm and a dimethylamino (–N(CH₃)₂) group directly attached to the ring. The combination of a nucleophilic primary amine and a tertiary amine within a conformationally constrained ring system imparts distinctive reactivity profiles valuable in medicinal chemistry campaigns, particularly for the synthesis of peptidomimetics, heterocyclic scaffolds, and CNS-active compounds.

The cyclobutane ring provides metabolic stability and three-dimensional character compared with linear or larger cyclic analogs, attributes increasingly favored in modern drug discovery. The primary amine is the more nucleophilic site under mild conditions and is preferred for acylation, sulfonylation, reductive amination, and condensation reactions, while the tertiary dimethylamino group can serve as a basic anchor or participate in quaternization.

Safety and Personal Protective Equipment

As with all low-molecular-weight aliphatic amines, appropriate safety precautions must be observed when handling 1-(Aminomethyl)-N,N-dimethylcyclobutanamine. Consult the Safety Data Sheet (SDS) before use. The following general guidelines apply:

• Eye and face protection: Wear chemical splash goggles and a face shield when handling concentrated material or performing transfers.
• Skin protection: Use chemically resistant gloves (e.g., nitrile, neoprene) and a laboratory coat. Avoid prolonged skin contact; wash immediately with soap and water if skin exposure occurs.
• Respiratory protection: Work in a well-ventilated fume hood. If adequate ventilation cannot be ensured, use a half-face respirator with an organic vapour cartridge appropriate for amine vapours.
• Ingestion and inhalation: Do not eat, drink, or smoke while handling. Avoid generating aerosols or dusts.
• Waste disposal: Dispose of waste according to local, regional, and national regulations for amine-containing chemical waste.

Note: Specific GHS hazard classifications, pictograms, and H/P statements for this compound should be confirmed from the current Aladdin SDS for SKU N724879 before laboratory use.

Solution Preparation Protocol

Follow the steps below to prepare stock and working solutions of 1-(Aminomethyl)-N,N-dimethylcyclobutanamine for downstream synthetic or biological assay applications.

1. Equilibrate the material to room temperature. If the reagent has been stored refrigerated, allow the sealed vial to equilibrate to ambient temperature for at least 15 minutes before opening to prevent moisture condensation on the compound.
2. Select an appropriate solvent. This compound is expected to be soluble in polar protic solvents (e.g., water, methanol, ethanol) and polar aprotic solvents (e.g., DMSO, DMF, acetonitrile) owing to its amine functionalities. Verify solubility empirically at the concentration required for your application. For aqueous buffers, adjust pH awareness: free amine protonation will occur below the pKa values.
3. Weigh accurately. Tare a clean, dry glass vial. Add the desired quantity of compound using a calibrated balance in a fume hood. Record the exact mass.
4. Add solvent and mix. Add the pre-calculated volume of solvent. Vortex or stir gently with a magnetic stir bar until complete dissolution is achieved. For DMSO stock solutions intended for biological use, prepare aliquots and avoid repeated freeze-thaw cycles.
5. Filter if required. For analytical or high-purity applications, filter the solution through a 0.2 µm PTFE syringe filter.
6. Label and store. Label with compound name, SKU (N724879), concentration, solvent, date of preparation, and preparer's initials. Store stock solutions at –20 °C under inert atmosphere (nitrogen or argon) if long-term stability is required.

Concentration calculations: use the molecular formula and molecular weight provided on the Certificate of Analysis (CoA) for the specific lot.

Typical Synthetic Applications

1-(Aminomethyl)-N,N-dimethylcyclobutanamine serves as a versatile bifunctional building block in the following reaction classes:

• Amide bond formation: The primary aminomethyl group reacts selectively with activated carboxylic acid derivatives (acid chlorides, NHS esters, mixed anhydrides) under Schotten-Baumann or solution-phase conditions to give monoamide products without the need for protecting groups on the tertiary amine under most conditions.
• Reductive amination: The primary amine condenses with aldehydes or ketones in the presence of reducing agents such as sodium cyanoborohydride or sodium triacetoxyborohydride to introduce additional carbon substituents.
• Urea and carbamate synthesis: Reaction with isocyanates or chloroformates at the primary amine provides urea or carbamate motifs incorporated into the cyclobutane scaffold — useful for fragment-based drug design.
• Sulfonamide formation: Treatment with sulfonyl chlorides in the presence of a base (e.g., triethylamine) gives sulfonamide products that retain the tertiary amine pharmacophore.
• Heterocycle construction: The 1,2-diamine-like spatial arrangement (primary amine and remote tertiary amine) facilitates cyclisation reactions to access N-containing heterocyclic structures including diketopiperazine analogs and lactam scaffolds.

When chemoselectivity between the primary and tertiary amine is critical, standard N-protection strategies (e.g., Boc protection of the primary amine with di-tert-butyl dicarbonate) can be applied before engaging the tertiary amine or vice versa.

Quality Control and Verification

Before commencing a synthetic campaign, verify the identity and purity of 1-(Aminomethyl)-N,N-dimethylcyclobutanamine (SKU N724879) using the following analytical approaches:

• Certificate of Analysis (CoA): Download the lot-specific CoA from the Aladdin Scientific website using the batch number printed on the vial label. Confirm molecular weight, purity (typically reported by HPLC or GC), and appearance.
• NMR spectroscopy: ¹H NMR and ¹³C NMR in deuterated solvent (e.g., CDCl₃ or D₂O) should be consistent with the expected structure: cyclobutane ring protons (δ ~1.7–2.2 ppm), N(CH₃)₂ singlet (δ ~2.2–2.4 ppm), and CH₂NH₂ methylene (δ ~2.5–2.7 ppm). Exact chemical shifts should be cross-referenced against the CoA or literature.
• Mass spectrometry: ESI-MS or APCI-MS should give [M+H]⁺ consistent with the molecular formula. Confirm the molecular formula from the CoA before acquiring spectra.
• Karl Fischer titration: Recommended for moisture-sensitive applications to determine water content in the as-received material.

If analytical data deviate from the CoA specifications, contact Aladdin Scientific Technical Support with the batch number and your analytical data for assistance.