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| Suzuki–Miyaura | |
|---|---|
| Name | Suzuki–Miyaura |
| Caption | Palladium-catalyzed cross-coupling between organoboron compounds and organohalides |
| Type | Cross-coupling reaction |
| Catalyst | Palladium complexes |
| Substrate | Aryl halides, vinyl halides, alkyl halides |
| Reagent | Organoboron compounds |
| Solvent | Various organic solvents, water, mixtures |
Suzuki–Miyaura The Suzuki–Miyaura reaction is a palladium-catalyzed cross-coupling between organoboron reagents and organohalides that forges carbon–carbon bonds in the synthesis of biaryls, styrenes, and substituted alkanes. Widely employed in academic and industrial laboratories, it links building blocks used in medicinal chemistry, materials science, and natural product synthesis.
The transformation couples an organoboron reagent such as a boronic acid, boronate ester, or potassium organotrifluoroborate with an aryl, vinyl, or alkyl halide or pseudohalide under the influence of a palladium catalyst and base. Key practitioners and beneficiaries include pharmaceutical companies like Pfizer, Novartis, Roche, and research groups at institutions such as Harvard University, University of Cambridge, Massachusetts Institute of Technology, Stanford University, and University of Tokyo. Milestones in application trace to collaborations among laboratories at University of California, Berkeley, CNRS, Max Planck Society, ETH Zurich, and Tohoku University. The reaction is routinely used alongside techniques from solid-phase peptide synthesis, flow chemistry, combinatorial chemistry, and deployed in syntheses authenticated by assays from American Chemical Society, Royal Society of Chemistry, and Nature.
The generally accepted catalytic cycle comprises oxidative addition of an organohalide to a Pd(0) species, transmetalation with the organoboron reagent activated by base, and reductive elimination to release the coupled product and regenerate Pd(0). Seminal mechanistic studies were advanced by researchers at University of California, Los Angeles, University of Chicago, University of California, Irvine, University of Basel, and Columbia University. Spectroscopic and computational insights have involved teams at Lawrence Berkeley National Laboratory, Argonne National Laboratory, Oak Ridge National Laboratory, University of Oxford, and University of California, Santa Barbara. Variations in oxidative addition were characterized in work associated with Bell Labs, BASF, Bayer, and academic groups at University of Pennsylvania, Yale University, Princeton University, and University of Illinois Urbana-Champaign.
Applications span synthesis of pharmaceuticals, agrochemicals, organic materials, and natural products. Notable end products or contexts include biaryl scaffolds in drugs made at Merck & Co., GlaxoSmithKline, AstraZeneca, and Boehringer Ingelheim; conjugated polymers in laboratories at Samsung Advanced Institute of Technology, Sony Corporation, and LG Chem; and complex natural product total syntheses reported from Scripps Research, University of California, San Diego, University of Cambridge, and Max Planck Institute for Coal Research. The reaction is integrated into routes for ligands used in Nobel Prize-related methodologies, exploited in Suzuki coupling applications in medicinal campaigns at Eli Lilly and Company and in materials for OLED research at DuPont and Universal Display Corporation.
A wide array of palladium catalysts from Pd(PPh3)4 to Pd2(dba)3 and palladium(II) precursors are used in conjunction with phosphine, N-heterocyclic carbene, and biarylmonophosphine ligands. Ligand innovation draws on work from groups at Breslow Laboratory, Hartwig group, Buchwald group, Fu group, and Negishi group. Industrial ligand suppliers and collaborators include Strem Chemicals, Johnson Matthey, Alfa Aesar, Sigma-Aldrich, and Takasago International Corporation. Ligand classes such as triarylphosphines, dialkylbiarylphosphines, and NHCs were optimized by teams at University of California, Berkeley, MIT, University of Wisconsin–Madison, University of California, Santa Barbara, and Imperial College London.
The reaction tolerates diverse solvents (toluene, dioxane, ethanol, water), bases (carbonate, hydroxide, fluoride), and temperatures from ambient to reflux. Variants include Suzuki–Miyaura couplings under microwave irradiation, flow chemistry adaptations developed at CERN-adjacent labs, aqueous-phase couplings popularized by groups at University of Tokyo, and ligand-free protocols reported by researchers at University of Liverpool and University of Leeds. Advanced methodologies incorporate photoredox catalysis from laboratories at University of Colorado Boulder and University of Ottawa, nickel-catalyzed cross-couplings inspired by work at Princeton University and Caltech, and enantioselective transformations advanced by teams at University of California, Irvine and University of Pennsylvania.
The reaction evolved through parallel contributions from Japanese and international laboratories, with pivotal developments recognized in award-winning work at Tohoku University, Osaka University, and Kyoto University. The method expanded through cross-disciplinary adoption by groups at University of Tokyo, Nagoya University, Hokkaido University, University of Oxford, University of Cambridge, and ETH Zurich. Key incremental advances and commercialization steps involved partnerships among Johnson & Johnson, Dow Chemical Company, DuPont, and academic spin-offs from Stanford University and Harvard University. Conferences such as Gordon Research Conferences, IUPAC symposia, and meetings of the American Chemical Society documented the technique's dissemination.
Practical challenges include sensitivity of some substrates to protodeboronation, transmetallation rates influenced by base and ligand, and competing homocoupling or β-hydride elimination for alkyl partners. Industrial scale-up considerations were addressed by engineering teams at Pfizer, Novo Nordisk, Takeda Pharmaceutical Company, Lilly Research Laboratories, and process chemistry groups at Merck Research Laboratories. Solutions involve ligand selection from suppliers like Strem Chemicals, solvent selection protocols at BASF, and catalyst recycling research from Johnson Matthey and Covestro. Safety and regulatory practices are guided by standards from Occupational Safety and Health Administration, European Medicines Agency, and Food and Drug Administration.
Category:Chemical reactions