Di-t-butyl-[15N]imidodicarbonate is an isotopically labeled carbamate/imidocarbonate derivative containing a 15N label within the imidodicarbonate nitrogen framework, featuring two tert-butyl ester substituents on the dicarbonate moiety rather than an amino acid backbone. The molecule bears imidodicarbonate functionality that can act as a nitrogen-containing carbonyl transfer reagent, while the tert-butyl groups provide steric bulk and acid-labile ester character that can influence chemoselectivity and downstream deprotection behavior. In synthetic and analytical workflows, the 15N enrichment supports nitrogen-isotope tracing or labeled-atom studies, and the imidodicarbonate structure is used as a precursor for preparing protected nitrogen-containing intermediates and for incorporating isotopic labels into target molecules.
Di-t-butyl-[15N]imidodicarbonate is an isotopically labeled, N-15 enriched carbamoylating reagent that contains two tert-butyl ester functionalities and an imidocarbonate core designed for controlled nitrogen transfer chemistry. The molecule's imidodicarbonate framework enables formation of activated carbamate or carbamoyl intermediates under conditions compatible with amine functionalization, while the tert-butyl groups provide acid-labile protection behavior that can be removed to reveal free carbamates or amines for downstream coupling. The labeled nitrogen at the imidocarbonate position supports mechanistic tracing and mass spectrometric discrimination in amino acid derivatization workflows. The compound's reactivity profile makes it suitable as a stable, bench-ready intermediate for protected nitrogen introduction and for isotope-assisted synthetic or analytical studies in peptide and amino acid chemistry.
1. Carbamate Protection Chemistry
Di-t-butyl-[15N]imidodicarbonate is applied in synthetic organic chemistry and peptide building-block preparation where carbamate formation and subsequent deprotection are required for orthogonal protection strategies. The imidodicarbonate core participates in nitrogen transfer to amines, while the tert-butyl ester groups act as acid-labile protecting groups that can be removed to regenerate reactive nitrogen functionality. The N-15 label enables tracking of nitrogen incorporation into protected amino acid derivatives, including N-protected amino acids and side-chain carbamates used to control chemoselective peptide coupling. Downstream use includes preparing isotope-resolved protected intermediates for peptide assembly, protecting-group screening, and method development in protected amino acid synthesis.
2. Isotope-Labeled Mechanistic Studies
Di-t-butyl-[15N]imidodicarbonate supports chemical biology and analytical research by enabling nitrogen-source tracing during amino acid derivatization and peptide coupling chemistry. The labeled imidodicarbonate nitrogen provides a distinct isotopic signature that can be detected by LC-MS or MS/MS to confirm incorporation pathways and differentiate competing activation routes. The tert-butyl protecting groups allow controlled conversion between protected and deprotected nitrogen states, enabling time-resolved or step-resolved mechanistic mapping of carbamoylation and deprotection sequences. The resulting isotope-labeled carbamate or carbamoyl products can serve as internal standards or mechanistic probes for studying nitrogen transfer efficiency and protecting-group behavior in peptide science.
3. Peptide Coupling Intermediate Preparation
Di-t-butyl-[15N]imidodicarbonate is utilized in peptide synthesis workflows that require reliable conversion of amine-containing amino acid fragments into protected forms compatible with coupling protocols. The reagent's imidodicarbonate functionality enables generation of activated carbamate-type intermediates that can be aligned with subsequent peptide bond formation steps while maintaining orthogonality of protecting groups. The tert-butyl groups provide a removable protection handle that can be timed to avoid interfering with other functional groups such as carboxylic acids, esters, or side-chain hydroxyls. N-15 labeling further supports the preparation of isotopically tagged peptide fragments for structural studies, peptide mapping, and controlled synthesis of labeled biomolecule derivatives.
4. Analytical Standards And Tracing
Di-t-butyl-[15N]imidodicarbonate is suitable for analytical research and method validation where isotopically resolved standards improve quantitation and structural assignment of nitrogen-containing derivatives. The N-15 enrichment at the imidodicarbonate nitrogen generates predictable mass shifts in carbamate and carbamoyl products derived from amine substrates, facilitating unambiguous detection in complex mixtures. The tert-butyl carbamate motif can be carried through derivatization sequences and then converted to alternative nitrogen states for orthogonal analytical readouts. Downstream applications include development of isotope-labeled reference materials for amino acid derivatization assays, peptide intermediate profiling, and confirmation of protecting-group transformations in synthetic organic chemistry.
5. Process Chemistry For Protected Nitrogen
Di-t-butyl-[15N]imidodicarbonate can be employed in process chemistry for manufacturing protected nitrogen intermediates used in fine chemical synthesis and peptide-related supply chains. The reagent's imidodicarbonate structure enables consistent carbamate-forming chemistry that can be integrated into scalable routes for producing N-protected amino acid derivatives and protected side-chain carbamates. The tert-butyl protecting groups support acid-controlled deprotection steps, enabling route design that separates activation, protection, and deprotection stages to manage functional-group compatibility. N-15 labeling can be incorporated when isotope-tagged intermediates are required for downstream quality control, impurity profiling, or tracer-based process monitoring in industrial amino acid and peptide synthesis.
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