Compound Overview and Chemical Properties

Benzyl 4-(methylamino)piperidine-1-carboxylate hydrochloride (Aladdin SKU B729352) is a piperidine-based secondary amine building block in which the piperidine nitrogen at the 1-position is protected as a benzyl carbamate (Cbz group), while the 4-position carries a free methylamino group presented as its hydrochloride salt. This dual-functionality makes the compound an attractive scaffold for parallel synthesis and combinatorial chemistry workflows.

The Cbz protecting group offers orthogonal deprotection selectivity: it can be cleanly removed by hydrogenolysis (Pd/C, H₂) or by transfer hydrogenation conditions without disturbing acid-labile protecting groups, enabling stepwise elaboration of the molecule. The hydrochloride salt form enhances solid-state stability and simplifies weighing in routine laboratory operations.

The secondary methylamine at the 4-position is available for acylation, reductive amination, sulfonylation, or alkylation reactions, providing a versatile handle for the installation of pharmacophore fragments relevant to drug discovery programs.

Materials and Safety Considerations

Materials required:

• Benzyl 4-(methylamino)piperidine-1-carboxylate hydrochloride (B729352, Aladdin Scientific)
• Appropriate organic solvents (e.g., DMF, DCM, MeOH, THF) depending on the downstream reaction
• Base for free-basing if required (e.g., triethylamine, DIPEA, or aqueous K₂CO₃)
• Analytical balance, volumetric glassware, inert atmosphere setup (if moisture-sensitive conditions apply)
• Personal protective equipment: lab coat, chemical-resistant gloves, safety goggles

Safety: Consult the Safety Data Sheet (SDS) supplied by Aladdin Scientific before handling this compound. As with all fine chemical reagents, avoid inhalation of dust, contact with skin and eyes, and work in a well-ventilated fume hood. The hydrochloride salt is hygroscopic; keep the container tightly sealed and store according to SDS recommendations.

Note: Specific hazard classifications, GHS pictograms, and first-aid measures must be confirmed against the current Aladdin SDS for B729352 prior to use.

Step-by-Step Handling and Preparation Protocol

Step 1 – Receipt and storage: Upon receipt, inspect the container for integrity. Store the compound in a cool, dry, well-ventilated location away from light and moisture. Record lot number and date of receipt in your laboratory inventory system.

Step 2 – Pre-weighing equilibration: Allow the sealed container to equilibrate to room temperature before opening to minimize condensation on the hygroscopic salt. Work quickly once opened.

Step 3 – Weighing: Tare a suitable dry vessel on an analytical balance. Weigh the required quantity of B729352 under ambient conditions; for highly moisture-sensitive downstream reactions, transfer weighing operations inside a glovebox or use a desiccant-protected environment.

Step 4 – Free-basing (optional): If the reaction requires the free base form, dissolve the hydrochloride salt in a suitable solvent (e.g., DCM or EtOAc) and treat with excess triethylamine (typically 1.5–2.0 equivalents) or wash an aqueous solution with saturated Na₂CO₃ followed by extraction. Dry the organic layer over MgSO₄ or Na₂SO₄ and concentrate. Confirm conversion by TLC or NMR before use.

Step 5 – Solution preparation: Dissolve the weighed compound in the appropriate solvent to the desired concentration. For reactions requiring anhydrous conditions, use freshly dried or commercially anhydrous solvents.

Step 6 – Reaction and workup: Use the prepared solution in the target synthetic step (e.g., acylation, reductive amination, or Cbz deprotection). Follow established protocols for the specific transformation. Monitor reaction progress by TLC, HPLC, or LC-MS as appropriate.

Step 7 – Disposal: Dispose of residues and waste solvents in accordance with local regulations and your institution's chemical waste management policies.

Typical Applications in Synthetic Chemistry

Benzyl 4-(methylamino)piperidine-1-carboxylate hydrochloride serves as a key intermediate in the preparation of pharmacologically relevant piperidine derivatives. Representative applications include:

• Amide bond formation: Coupling of the 4-methylamino group with carboxylic acids using standard amide coupling reagents (e.g., HATU, EDC/HOBt) to afford N-methyl amide products.
• Reductive amination: Reaction with aldehydes or ketones in the presence of a reducing agent (e.g., NaBH₃CN or NaBH(OAc)₃) to install diverse alkyl substituents on the secondary nitrogen.
• Sulfonylation: Treatment with sulfonyl chlorides in the presence of a tertiary amine base to produce sulfonamide derivatives.
• Cbz deprotection and further functionalization: Hydrogenolytic removal of the Cbz group followed by N-functionalization of the resulting piperidine nitrogen to build more complex scaffolds.
• Heterocycle synthesis: Use as a precursor in cyclization reactions to generate fused or spirocyclic nitrogen-containing ring systems of interest in drug discovery.

These transformations position B729352 as a versatile entry point into diverse piperidine chemical space relevant to CNS, oncology, and infectious disease drug discovery programs.

Quality, Ordering, and Support

Availability: Benzyl 4-(methylamino)piperidine-1-carboxylate hydrochloride is available from Aladdin Scientific under SKU B729352. Contact Aladdin Scientific's customer service or visit the product page to confirm current stock, available pack sizes, pricing, and lead times.

Quality assurance: Aladdin Scientific reagents undergo quality control testing. Specific purity data, analytical certificates (CoA), and spectral data for lot B729352 should be requested from Aladdin at time of purchase or accessed through the product portal.

Technical support: For questions about appropriate applications, compatibility with specific synthetic routes, or custom quantity requirements, contact Aladdin Scientific's technical support team. Research scientists are encouraged to review the SDS and CoA documents prior to experimental use.

Ordering: Place orders through the Aladdin Scientific website, authorized distributors, or directly via the procurement team. Reference SKU B729352 when ordering to ensure correct product identification.