Heterogeneous Asymmetric Catalysis in Enantioselective Hydrogenation

Heterogeneous asymmetric catalysis in enantioselective hydrogenation combines the robustness and recyclability of solid catalysts with the precision of chiral induction, enabling the efficient production of enantiomerically enriched compounds. By anchoring chiral modifiers or ligands onto metal surfaces, researchers create stereochemically defined microenvironments that preferentially stabilise one enantiomeric transition state. Key challenges include controlling the spatial arrangement of active sites, tuning electronic properties at the atomic scale and mitigating racemic background reactions. Advances in surface science—ranging from scanning probe imaging to atomistic modelling—have elucidated the interplay between molecular conformation and surface binding, revealing how diastereomeric interactions drive selectivity. Nanostructuring strategies such as core–shell architectures, tailored support materials and functionalised nanoparticles have further enhanced activity and enantiomeric excess, while electrocatalytic approaches using proton‐exchange membrane reactors offer new pathways under milder conditions. These developments hold industrial significance for the manufacture of pharmaceuticals, agrochemicals and fine chemicals, where stringent stereochemical purity is essential. The global impact of this field extends to more sustainable processes, reduced energy consumption and minimised waste, aligning with green‐chemistry objectives and the increasing demand for chiral products in modern supply chains.

Research from Nature Portfolio

Recent studies have employed model single‐crystal surfaces modified with chiral amines to probe the fundamental origins of enantioselective hydrogenation. On palladium(111) modified with a naphthyl‐based amine, combined scanning tunnelling microscopy and density functional theory revealed diastereomeric docking complexes that enhance C=C hydrogenation rates by favouring the enol tautomer. This work demonstrates how specific hydrogen‐bonding and π‐interactions at the surface stabilise one enantiomeric pathway, offering a molecular‐level explanation for improved activity and selectivity in a prototypical asymmetric hydrogenation.

Heterogeneous Asymmetric Catalysis in Enantioselective Hydrogenation publication trend

The graph below shows the total number of articles in heterogeneous asymmetric catalysis in enantioselective hydrogenation across all publications each year (not limited to Nature Index journals).

Technical terms

Heterogeneous catalysis: A catalytic process in which the catalyst is in a different phase (typically solid) from the reactants.

Enantioselectivity: The preference of a catalyst to produce one enantiomer over the other in a chiral reaction.

Chiral modifier: A molecule that, when adsorbed on a solid surface, induces a chiral environment for enantioselective reactions.

Proton‐exchange membrane reactor: An electrochemical cell using a solid polymer electrolyte to facilitate hydrogenation under mild conditions.

Core–shell nanoparticle: A nanostructured catalyst comprising a core material enclosed by a shell of a different composition to tune surface properties.

References

1. Enhanced hydrogenation activity and diastereomeric interactions of methyl pyruvate co-adsorbed with R-1-(1-naphthyl)ethylamine on Pd(111). Nature Communications (2016).
2. Influence of Synthesis Conditions on the Structure of Nickel Nanoparticles and their Reactivity in Selective Asymmetric Hydrogenation. ChemCatChem (2020).
3. Facile Synthesis of P25@Pd Core-Shell Catalyst with Ultrathin Pd Shell and Improved Catalytic Performance in Heterogeneous Enantioselective Hydrogenation of Acetophenone. Catalysts (2019).
4. Electrocatalytic asymmetric hydrogenation of α,β-unsaturated acids in a PEM reactor with cinchona-modified palladium catalysts. Electrochemistry Communications (2020).