Catalytic Hydrophosphination Reactions in Organic Synthesis

Catalytic hydrophosphination—the addition of a phosphorus–hydrogen bond across unsaturated carbon–carbon frameworks—has become a pivotal strategy for constructing C–P bonds with high atom economy and minimal by-product formation. This transformation underpins the synthesis of valuable organophosphorus motifs used in ligand design, pharmaceuticals, agrochemicals and functional materials. Advances in catalyst design now encompass both transition-metal complexes (notably copper, manganese and rare-earth species) and main-group systems (aluminium, lithium aluminate), enabling additions to alkenes, alkynes, conjugated Michael acceptors and heterocumulenes. Key innovations have delivered anti-Markovnikov selectivity, enantioselective control and compatibility with primary, secondary and P-oxygenated phosphine reagents. Mechanistic studies—combining kinetic measurements, spectroscopic monitoring and computational modelling—have elucidated pathways involving P–H activation, migratory insertion and protonolysis. Collectively, these developments highlight the global significance of hydrophosphination as a sustainable, versatile and operationally simple route to C–P bond formation in modern organic synthesis.

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Catalytic Hydrophosphination Reactions in Organic Synthesis publication trend

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

Technical terms

Hydrophosphination: Addition of a phosphorus–hydrogen bond across an unsaturated carbon–carbon bond to form a C–P linkage.

Michael acceptor: An α,β-unsaturated carbonyl compound that undergoes conjugate (1,4-) addition with nucleophiles.

N-heterocyclic carbene (NHC): A stable, neutral ligand featuring a divalent carbon centre within a heterocyclic ring, widely used to support metal catalysts.

Enantioselectivity: The preferential formation of one enantiomer over its mirror image in a chiral chemical transformation.

Heterocumulene: A molecule containing consecutive cumulated double bonds between carbon and a heteroatom, such as carbodiimides, isocyanates or isothiocyanates.

References

1. Lithium‐Aluminate‐Catalyzed Hydrophosphination Applications. Angewandte Chemie International Edition (2019).
2. A Copper(I) Platform for One-Pot P–H Bond Formation and Hydrophosphination of Heterocumulenes. ACS Catalysis (2022).
3. Manganese(I)-Catalyzed Asymmetric Hydrophosphination of α,β‑Unsaturated Carbonyl Derivatives. Organic Letters (2023).
4. Broken Promises? On the Continued Challenges Faced in Catalytic Hydrophosphination. ACS Catalysis (2022).