Asymmetric Synthesis of Functionalized Organic Molecules

The asymmetric synthesis of functionalized organic molecules underpins the preparation of enantiomerically enriched compounds with precise three-dimensional architectures. Central strategies encompass chiral catalysts—both metal-based and purely organic systems—alongside the use of auxiliaries and reagents to induce asymmetry. Desymmetrization of prochiral or meso substrates, dynamic kinetic resolutions and enantioselective cycloadditions represent key modalities. Advances in reaction design have enabled the selective formation of multiple stereocentres in a single operation, often under mild and atom-efficient conditions. The evolution of organocatalysis and the judicious choice of ligands have broadened the scope of accessible scaffolds, from intricate natural products to bespoke materials. Such methodologies have been applied to the stereocontrolled assembly of heterocycles, polyenes and polycyclic frameworks bearing diverse functional groups. The global significance of these approaches spans drug discovery—where enantiopure agents minimise side-effects—to materials science, where chirality imparts novel optical and electronic properties. Ongoing developments continue to integrate green chemistry principles, continuous-flow platforms and emerging concepts in aggregate-based catalysis, thereby expanding the toolkit for sustainable and scalable asymmetric synthesis.

Research from Nature Portfolio

Recent studies have demonstrated the power of desymmetrization in constructing complex chiral scaffolds. One approach employs an intramolecular carbon–carbon bond-forming reaction of allenoates to furnish bicyclic lactones with excellent yields and enantiomeric purity, exploiting a dynamic kinetic resolution of racemic precursors. A two-step nickel-catalysed protocol has been devised to transform phenolic substrates into fused tricyclic frameworks bearing multiple contiguous stereocentres with near-perfect enantio- and diastereoselectivity. Another cascade build/couple/pair strategy achieves a one-pot assembly of octahydro-indoloquinolizine derivatives with more than three stereogenic centres, delivering a library of nature-inspired scaffolds under highly atom-economic conditions and showcasing modular control of stereochemical outcome.

Asymmetric Synthesis of Functionalized Organic Molecules publication trend

The graph below shows the total number of articles in asymmetric synthesis of functionalized organic molecules across all publications each year (not limited to Nature Index journals).

Technical terms

Asymmetric synthesis: A suite of methods designed to produce predominantly one enantiomer of a chiral molecule.

Desymmetrization: Transformation of a symmetric or meso substrate into a chiral product by selective functionalisation of equivalent sites.

Enantiomeric excess (ee): A measure of the purity of one enantiomer relative to its mirror image, expressed as the percentage difference.

Organocatalysis: Catalysis mediated by small organic molecules that promote asymmetric transformations without the need for metals.

Diastereoselectivity: The preferential formation of one diastereomer over others in reactions that generate multiple stereocentres.

References

1. Enantioselective desymmetrization of cyclohexadienones via an intramolecular Rauhut–Currier reaction of allenoates. Nature Communications (2016).
2. Two-step synthesis of chiral fused tricyclic scaffolds from phenols via desymmetrization on nickel. Nature Communications (2017).
3. Enantioselective Total Synthesis of (+)‐Incargranine A Enabled by Bifunctional Iminophosphorane and Iridium Catalysis. Angewandte Chemie International Edition (2023).
4. Aggregation-Induced Catalysis: Asymmetric Catalysis with Chiral Aggregates. Research (2023).
5. Asymmetric Organocatalyzed Intermolecular Functionalization of Cyclohexanone‐Derived Dienones. The Chemical Record (2023).