DL-2-aziridinecarboxylic acid is a non-proteinogenic amino acid derivative featuring an aziridine ring attached to a carboxylic acid, placing it in the class of cyclic amino acid analogues used for peptide and chemical biology work. The molecule contains both an amino functionality and a carboxyl group, and the "DL" designation indicates a racemic mixture of stereoisomers around the chiral centers present in the aziridine-carboxyl framework. As a ring-constrained, strained heterocycle bearing an amino acid handle, it is employed as a substrate or building block in synthetic routes to aziridine-containing peptides and in structure-activity or labeling studies where the aziridine moiety provides a reactive functional handle for conjugation and derivatization.
CAT No: CP20503
DL-2-aziridinecarboxylic acid is a racemic aziridinecarboxylic acid derivative featuring a strained three-membered aziridine ring and a carboxylic acid functional group, providing a compact chiral precursor framework even when supplied as a DL mixture. The aziridine ring is predisposed to nucleophilic ring-opening under controlled conditions, enabling access to β-amino acid motifs and other nitrogen-containing intermediates through stereochemical transfer or selective inversion pathways. The carboxylic acid can be converted into activated esters or amide derivatives, supporting downstream coupling chemistry and intermediate preparation for peptide-adjacent syntheses. As an amino acid-like nitrogen heterocycle building block, it functions as a reactive scaffold for constructing substituted amines, heterocycles, and aziridine-derived analogs used in synthetic organic chemistry and biochemical research workflows.
1. Aziridine Ring-Opening Intermediates
DL-2-aziridinecarboxylic acid is applied in synthetic organic chemistry as a ring-opening precursor to generate β-amino acid derivatives and substituted amines for medicinal chemistry intermediate preparation. The aziridine ring strain and the adjacent carboxyl group enable nucleophilic opening that can be leveraged to install side-chain functionality while retaining a handle for subsequent functional group transformations. The carboxylic acid can be protected or activated to support iterative derivatization, including conversion to ester or amide forms compatible with multi-step synthesis. Downstream products formed from aziridine ring-opening can serve as chiral building blocks, substrate surrogates, or scaffold precursors for larger nitrogen-containing molecules.
2. Amide And Ester Coupling Chemistry
DL-2-aziridinecarboxylic acid is suited to process chemistry and fine chemical synthesis where carboxylic acid activation is used to build amide and ester linkages for downstream library or intermediate generation. The molecule's carboxyl group can be transformed into activated intermediates that participate in nucleophilic acyl substitution with amines or alcohols, enabling rapid access to N-acylated derivatives and protected acid/ester intermediates. The aziridine nitrogen remains a reactive motif that can be carried through as a controlled electrophile or converted later into more stable amine-containing structures. Coupled derivatives can function as chemical handles for polymerizable units, protecting-group-aware intermediates, or precursor materials for nitrogen-rich heterocycle synthesis.
3. Unnatural Amino Acid Building Blocks
DL-2-aziridinecarboxylic acid is used in peptide chemistry-adjacent synthesis to access amino acid analogs and β-amino acid frameworks that can be incorporated into peptidomimetic designs. The aziridinecarboxylic acid architecture provides a nitrogen-containing backbone element that can be converted into amino acid-like structures via ring-opening and functional group interconversion, supporting the generation of residues with altered sterics and hydrogen-bonding patterns. The presence of a carboxyl functionality enables protection strategies such as esterification or temporary acid masking, facilitating compatibility with coupling chemistries used for constructing peptide-like chains. Resulting amino acid analogs can be applied in structure-activity relationship studies, conformational tuning of peptide mimics, and synthetic methodology development for noncanonical residue incorporation.
4. Chemical Biology Probe Synthesis
DL-2-aziridinecarboxylic acid is employed in chemical biology research for constructing electrophilic nitrogen-containing probes and reactive intermediates used to study nucleophile engagement and covalent labeling behavior. The strained aziridine ring can undergo controlled nucleophilic attack by biological nucleophiles, enabling the design of labeling reagents that map reactivity to specific functional-group environments. The carboxylic acid enables conjugation planning by allowing conversion to activated derivatives for attachment to linkers, tags, or carrier scaffolds while maintaining a defined spatial relationship between the electrophile and the conjugation handle. Probe-derived conjugates can serve as tools for mechanistic studies, reactivity profiling, and analytical method development focused on covalent modification chemistry.
5. Pharmaceutical Intermediate Preparation
DL-2-aziridinecarboxylic acid is relevant to pharmaceutical intermediate preparation and specialty chemical production where nitrogen heterocycles and amino acid-derived motifs are common synthetic themes. The aziridinecarboxylic acid functionality supports conversion into substituted amine intermediates and carboxyl-functional derivatives that can feed into medicinal chemistry routes, including side-chain elaboration and heterocycle assembly. The racemic DL stereochemical supply can be leveraged for scalable intermediate manufacture when downstream steps include stereoselective resolution, asymmetric transformation, or stereospecific ring-opening control. Carboxyl activation and subsequent derivatization enable integration into manufacturing sequences that generate protected or activated intermediates for broader chemical manufacturing workflows.
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