Chemical Identity and Key Properties

Carbamic acid, (1-cyano-1-methylethyl)-, 1,1-dimethylethyl ester (9CI), catalogued under Aladdin Scientific SKU C691312, is a bifunctional organic compound featuring two chemically distinct and synthetically valuable moieties: a tert-butoxycarbonyl (Boc) carbamate protecting group on a nitrogen atom, and a tertiary nitrile (cyano) group on the same carbon bearing two methyl substituents.

The compound is structurally characterized by a quaternary carbon centre connecting the dimethyl groups, the cyano group, and the nitrogen atom protected as a Boc carbamate. This architecture imparts steric stability to the nitrile and facilitates selective downstream transformations. The Boc group is well established as one of the most commonly employed amine-protecting groups in synthetic chemistry due to its orthogonal stability under basic and neutral conditions and clean removal under mild acidic conditions.

Researchers should consult the product specification sheet provided by Aladdin Scientific for confirmed physical constants including molecular weight, melting point, purity, and spectroscopic data specific to the supplied lot.

Synthesis, Handling and Storage Guidelines

Handling Precautions: As with all nitrile-containing compounds, appropriate personal protective equipment (PPE) must be worn, including chemical-resistant gloves, safety goggles, and a laboratory coat. Operations should be performed in a well-ventilated fume hood. Nitrile functional groups can liberate toxic hydrogen cyanide (HCN) upon strong acid or base hydrolysis; avoid conditions that promote vigorous hydrolysis of the cyano group unintentionally.

Storage Conditions: Store the compound in a tightly sealed container under cool, dry conditions, away from strong acids, strong bases, and oxidising agents. Refrigerated storage (2–8 °C) is generally recommended for long-term stability of Boc-protected compounds; confirm exact storage conditions with the Aladdin Scientific product datasheet for SKU C691312.

Solubility: Boc-protected nitrile compounds of this structural type typically dissolve well in common organic solvents such as dichloromethane (DCM), tetrahydrofuran (THF), ethyl acetate, acetonitrile, and dimethylformamide (DMF). Verify solubility for your specific application conditions.

Stability: The Boc group is stable under neutral and basic aqueous conditions but is labile under acidic conditions. The nitrile group is stable under the standard Boc deprotection conditions (dilute TFA or HCl), making sequential or selective transformations feasible.

Laboratory Applications and Use Cases

Carbamic acid, (1-cyano-1-methylethyl)-, 1,1-dimethylethyl ester (9CI) serves several important roles in research laboratory settings:

• Protected Amine Intermediate in Multistep Synthesis: The Boc-protected nitrogen allows chemists to selectively manipulate other functional groups in a molecule before revealing the free amine via deprotection. The tertiary nitrile can be hydrolysed to a carboxylic acid, reduced to an amine, or employed in cycloaddition reactions.
• Polymer Chemistry: Compounds bearing both a Boc-amine and a nitrile group are relevant as monomers, chain-transfer agents, or initiator fragments in controlled radical polymerisation techniques such as RAFT (Reversible Addition-Fragmentation Chain Transfer) and ATRP (Atom Transfer Radical Polymerisation), enabling synthesis of stimuli-responsive or functionalised polymers.
• Medicinal Chemistry and Drug Discovery: The combination of Boc-amine and nitrile functionalities is frequently found in pharmaceutical building blocks for peptidomimetics, kinase inhibitors, and other biologically active scaffolds. This compound may serve as a key intermediate in the preparation of such targets.
• Material Science: Nitrile-containing Boc-protected amines may be employed in the preparation of functional materials, including precursors to nitrogen-rich heterocycles via cyclisation of the nitrile group.

Boc Deprotection Protocol

The following general protocol outlines standard Boc removal conditions applicable to this compound class. Always optimise conditions for your specific substrate and downstream requirements.

1. TFA/DCM Method: Dissolve the Boc-protected compound in anhydrous DCM (typically 0.1–0.5 M). Add trifluoroacetic acid (TFA, 20–50% v/v) and stir at room temperature for 1–3 hours. Monitor reaction progress by TLC or LC-MS. Upon completion, evaporate solvent and TFA under reduced pressure. The resulting amine TFA salt can be free-based with a suitable base (e.g., triethylamine, saturated NaHCO₃) or used directly as the salt.
2. HCl/Dioxane Method: Treat the substrate with 4 M HCl in 1,4-dioxane (4–10 equivalents relative to substrate) in an inert solvent at room temperature. The amine hydrochloride salt precipitates or remains in solution and can be collected by filtration or evaporation.
3. Key Considerations: Confirm that the nitrile group is inert under selected acidic conditions (it typically is under these mild conditions). Avoid prolonged exposure to very strongly acidic aqueous conditions, which may promote nitrile hydrolysis.

Note: These are standard literature protocols for Boc removal. Validate conditions with the specific lot of C691312 and your target application.