T. Wang, Y. Kayaki, H. Fujisaki, H. Kawanami, Y. Shimoyama, M. Yoshida, Y. Nakajima*, “Z-Selective Semihydrogenation of Internal Alkynes Catalyzed by Phenanthroline-Based PNNP-Fe(II) Complexes”, ChemCatChem, accepted. DOI: 10.1002/cctc.202500785.

Y. Kayaki*, Y. Tsuda, S. Kuwata*, “Metal–Ligand Cooperation of Ir(III) Catalysts Bearing a β-Protic Pyrazole Chelate in Carboxylative Cyclization of Propargylic Amine with CO2”, Chem. Eur. J., in press. DOI: 10.1002/chem.202502024.

H. Kato, Y. Kayaki, T. Koike*, “Photocatalytic E→Z Isomerization of gem-Bromofluoroalkenes: Stereoselective Synthesis of β-Fluorostyrene Derivatices”, Org. Biomol. Chem., 23, 1342–1346 (2025). DOI: 10.1039/D4OB01658K. 

K. Shibahara, Y. Kayaki*, K. Yamashiro, Y. Nagashima, K. Fujii, K. Tanaka*, “Rh-Catalyzed Enantioselective [2+2+1] Cycloaddition Reactions Using Three Different 2π-Components”, Nat. Synth., 3, 1414–1426 (2024). DOI: 10.1038/s44160-024-00604-7. 

S. Hase, K. Yamashita, and Y. Kayaki*, “Synthesis of Alkenylgold(I) Complexes Relevant to Catalytic Carboxylative Cyclization of Unsaturated Amines and Alcohols”, Molecules, 29, 1331(1–10) (2024). Invited paper for the special issue “Exclusive Feature Papers in Inorganic Chemistry 2.0”. DOI: 10.3390/molecules29061331

T. Yajima, A. Katayama, T. Ito, T. Kawada, K. Yabushita, T. Yasuda, T. Ohta, T. Katayama, N. Utsumi, Y. Kayaki, and S. Kuwata*, “Asymmetric Reductive Amination of α-Keto Acids Using Ir-Based Hydrogen Transfer Catalysts: An Access to Unprotected Unnatural α-Amino Acids”, Org. Lett., 26, 1426–1431 (2024). DOI: 10.1021/acs.orglett.3c04378

R. Watari and Y. Kayaki*, “Synthesis, Structures, and Properties of Manganese(I) Complexes Featuring Tridentate Amidine-Toting Protic Amine Ligands”, New J. Chem., 47, 18610–18617 (2023). DOI: 10.1039/D3NJ02927A

R. Watari*, T. Itoh, S. Kuwata, and Y. Kayaki*, “Alkoxide-Decorated Copper Nanoparticles on Amidine-Modified Polymers as Hydrogenation Catalysts for Enabling H2 Heterolysis”, ACS Catal., 13, 5159–5169 (2023). DOI: 10.1021/acscatal.3c00246

A. Matsunami, S. Kuwata, and Y. Kayaki*, “Regioselective Transfer Hydrogenative Defluorination of Polyfluoroarenes Catalyzed by Bifunctional Azairidacycle”, Organics, 3, 150–160 (2022). Invited article for the special issue “Advanced Research Papers in Organics”. DOI: 10.3390/org3030012

T. Kawada, K. Yabushita, T. Yasuda, T. Ohta, T. Yajima, K. Tanaka, N. Utsumi, M. Watanabe, K. Murata, Y. Kayaki, S. Kuwata*, and T. Katayama, “Asymmetric Transfer Hydrogenative Amination of Benzylic Ketones Catalyzed by Cp*Ir(III) Complexes Bearing a Chiral N-(2-Picolyl)sulfonamidato Ligand”, J. Org. Chem., 87, 8458–8468 (2022). DOI: 10.1021/acs.joc.2c00580

Y. Kayaki*, T. Hayakawa, and T. Ikariya, “Synthesis of N,O-Chelating Hydrazidopalladium Complexes from 1,2-Bis(trifluoroacetyl)hydrazine”, Inorganics, 9, 76(1–11) (2021). DOI: 10.3390/inorganics9100076

T. Hanaoka*, Y. Arao, Y. Kayaki, S. Kuwata, and M. Kubouchi*, “New Approach to Recycling of Epoxy Resins Using Nitric Acid: Regeneration of Decomposed Products through Hydrogenation”, ACS Sustainable Chem. Eng., 9, 12520–12529 (2021). DOI: 10.1021/acssuschemeng.1c01737

H. Nakamura, M. Yoshida, A. Matsunami, S. Kuwata, and Y. Kayaki*, “Oxy-Tethered Cp*Ir(III) Complex as a Competent Catalyst for Selective Dehydrogenation from Formic Acid”, Chem. Commun., 57, 5534–5537 (2021). DOI: 10.1039/D1CC01712H

T. Touge*, H. Nara, M. Kida, K. Matsumura, and Y. Kayaki*, “Convincing Catalytic Performance of Oxo-Tethered Ruthenium Complexes for Asymmetric Transfer Hydrogenation of Cyclic a-Halogenated Ketones through Dynamic Kinetic Resolution”, Org. Lett., 23, 3070–3075 (2021). DOI: 10.1021/acs.orglett.1c00739

T. Hanaoka*, Y. Arao, Y. Kayaki, S. Kuwata, and M. Kubouchi*, “Analysis of nitric acid decomposition of epoxy resin network structures for chemical recycling”, Polym. Degrad. Stab., 186, 109537 (2021). DOI: 10.1016/j.polymdegradstab.2021.109537

Y. Sato, Y. Kawata, S. Yasui, Y. Kayaki*, and T. Ikariya, “New Bifunctional Bis(azairidacycle) with Axial Chirality via Double Cyclometalation of 2,2’-Bis(aminomethyl)-1,1’-binaphthyl”, Molecules, 26, 1165(1–12) (2021). Invited paper for the special issue “Influencers in Organometallic Chemistry—A Themed Issue Honoring Dr. Michel Pfeffer”. DOI: 10.3390/molecules26041165

K. Shibutani*, J. Nakai, K. Aphichartsuphapkhajorn, Y. Kayaki, S. Kuwata, Y. Arao, and M. Kubouchi, “The Activation of Furfuryl Alcohol Polymerization by Oxygen and Its Enhanced Mechanical Properties”, J. Appl. Polym. Sci., 138, e50311(1–10) (2021). DOI: 10.1002/app.50311

Y. Sato, Y. Kayaki*, and T. Ikariya, “Transfer Hydrogenation of Carbon Dioxide via Bicarbonate Promoted by Bifunctional C–N Chelating Cp*Ir(III) Complexes”, Chem. Commun., 56, 10762–10765 (2020). DOI: 10.1039/D0CC04379F

R. Watari*, S. Kuwata, and Y. Kayaki*, “Amidines as Effective Ancillary Ligands in Copper-Catalyzed Hydrogenation of Carbon Dioxide”, Chem. Lett., 49, 252–254 (2020). DOI: 10.1246/cl.190873

O. Ogata*, H. Nara, K. Matsumura, and Y. Kayaki*, “Formal Deoxygenative Hydrogenation of Lactams Using PNHP-Pincer Ruthenium Complexes under Nonacidic Conditions”, Org. Lett., 21, 9954–9959 (2019). DOI: 10.1021/acs.orglett.9b03878

S. Kamezaki, Y. Kayaki*, S. Kuwata, and T. Ikariya, “Synthesis of a Half-Sandwich Hydoxidoiridium(III) Complex Bearing a Nonprotic N-Sulfonyldiamine Ligand and Its Transformations Triggered by the Brønsted Basicity”, Inorganics, 7, 125 (2019). Special Issue on Iridium Complexes. DOI: 10.3390/inorganics7100125

T. Touge*, K. Sakaguchi, N. Tamaki, H. Nara, T. Yokozawa, K. Matsumura, and Y. Kayaki*, “Multiple Absolute Stereocontrol in Cascade Lactone Formation via Dynamic Kinetic Resolution Driven by the Asymmetric Transfer Hydrogenation of Keto Acids with Oxo-tethered Ruthenium Catalysts”, J. Am. Chem. Soc., 141, 16354–16361 (2019). DOI: 10.1021/jacs.9b07297

K. Tanaka, T. Miki, K. Murata, A. Yamaguchi, Y. Kayaki, S. Kuwata*, T. Ikariya, and M. Watanabe*, “Reductive Amination of Ketonic Compounds Catalyzed by Cp*Ir(III) Complexes Bearing Picolinamidato Ligands”, J. Org. Chem., 84, 10962–10977 (2019). DOI: 10.1021/acs.joc.9b01565

N. Tashima, T. Sawazaki, Y. Kayaki, and S. Kuwata*, “A P-C Chelate, Protic 1,2-Dihydropyridin-2-ylidene Ruthenium Complex: Synthesis, Structure, and Reversible Deprotonation”, Chem. Lett., 48, 787–790 (2019). DOI: 10.1246/cl.190253

T. Kawano, R. Watari, Y. Kayaki*, and T. Ikariya, “Catalytic Hydrogenation of Carboxamides with a Bifunctional Cp*Ru Catalyst Bearing an Imidazol-2-ylidene with a Protic Aminoethyl Side Chain”, Synthesis, 51, 2542–2547 (2019). Invited paper for Special Topic Issue on Ruthenium. DOI: 10.1055/s-0037-1611794

A. Yoshimura, R. Watari, S. Kuwata, and Y. Kayaki*, “Poly(ethyleneimine)s-Mediated Consecutive Hydrogenation of Carbon Dioxide to Methanol with Ru Catalysts”, Eur. J. Inorg. Chem., 2375–2380 (2019). DOI: 10.1002/ejic.201900322

P. A. Dub*, A. Matsunami, S. Kuwata, and Y. Kayaki*, “Cleavage of N-H Bond of Ammonia via Metal-Ligand Cooperation Enables Rational Design of a Conceptually New Noyori-Ikariya Catalyst”, J. Am. Chem. Soc., 141, 2661–2677 (2019). DOI: 10.1021/jacs.8b12961

N. Yamamoto, Y. Sato, Y. Kayaki*, and T. Ikariya, “Synthesis and Reactivity of Cp*IrIII Complexes with a C–S Chelate Displaying Metal/Sulfur Bifunctionality”, Organometallics, 37, 3342–3352 (2018). DOI: 10.1021/acs.organomet.8b00562

A. Matsunami, M. Ikeda, H. Nakamura, M. Yoshida, S. Kuwata, and Y. Kayaki*, “Accessible Bifunctional Oxy-Tethered Ruthenium(II) Catalysts for Asymmetric Transfer Hydrogenation”, Org. Lett., 20, 5213–5218 (2018). DOI: 10.1021/acs.orglett.8b02157

O. Ogata*, H. Nara, M. Fujiwhara, K. Matsumura, and Y. Kayaki*, “N-Monomethylation of Aromatic Amines with Methanol via PNHP-Pincer Ru Catalysts”, Org. Lett., 20, 3866–3870 (2018). DOI: 10.1021/acs.orglett.8b01449

A. Matsunami, Y. Kayaki*, S. Kuwata, and T. Ikariya, “Nucleophilic Aromatic Substitution in Hydrodefluorination Exemplified by Hydridoiridium(III) Complexes with Fluorinated Phenylsulfonyl-1,2-diphenylethylenediamine Ligands”, Organometallics, 37, 1958–1969 (2018). DOI: 10.1021/acs.organomet.8b00242

Y. Yuki*, T. Touge, H. Nara, K. Matsumura, M. Fujiwhara, Y. Kayaki*, and T. Ikariya, “Selective Asymmetric Transfer Hydrogenation of α-Substituted Acetophenones with Bifunctional Oxo-Tethered Ruthenium(II) Catalysts”, Adv. Synth. Catal., 360, 568–574 (2018). DOI: 10.1002/adsc.201701227

Y. Nakahara, T. Toda, A. Matsunami, Y. Kayaki, and S. Kuwata*, “Protic NNN and NCN Pincer-Type Ruthenium Complexes Featuring (Trifluoromethyl)pyrazole Arms: Synthesis and Application to Catalytic Hydrogen Evolution from Formic Acid”, Chem. Asian J., 13, 73–80 (2018). DOI: 10.1002/asia.201701474

R. Watari*, N. Matsumoto, S. Kuwata, and Y. Kayaki*, “Distinct Promotive Effects of 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) on Polymer Supports in Copper-Catalyzed Hydrogenation of C=O Bonds”, ChemCatChem, 9, 4501–4507 (2017). DOI: 10.1002/cctc.201701316

R. Watari*, Y. Kayaki, S.-i. Hirano, N. Matsumoto, and T. Ikariya, “Development of Homogeneous Hydrogenation of Carbon Dioxide to Formate Catalyzed by Copper Complexes”, Energy Procedia, 114, 7150–7153 (2017). Proceedings of 13th International Conference on Greenhouse Gas Control Technologies, GHGT-13. DOI: 10.1016/j.egypro.2017.03.1877

A. Matsunami, S. Kuwata, and Y. Kayaki*, “A Bifunctional Iridium Catalyst Modified for Persistent Hydrogen Generation from Formic Acid: Understanding Deactivation via Cyclometalation of a 1,2-Diphenylethylenediamine Motif”, ACS Catal., 7, 4479–4484 (2017). DOI: 10.1021/acscatal.7b01068

Y. Sato, Y. Kayaki*, and T. Ikariya*, “Comparative Study of Bifunctional Mononuclear and Dinuclear Amidoiridium Complexes with Chiral C–N Chelating Ligands for the Asymmetric Transfer Hydrogenation of Ketones”, Chem. Asian J., 11, 2924–2931 (2016). DOI: 10.1002/asia.201600955

T. Touge*, H. Nara, M. Fujiwhara, Y. Kayaki*, and T. Ikariya, “Efficient Access to Chiral Benzhydrols via Asymmetric Transfer Hydrogenation of Unsymmetrical Benzophenones with Bifunctional Oxo-tethered Ruthenium Catalysts”, J. Am. Chem. Soc., 138, 10084–10087 (2016). DOI: 10.1021/jacs.6b05738

O. Ogata*, Y. Nakayama, H. Nara, M. Fujiwhara, and Y. Kayaki*, “Atmospheric Hydrogenation of Esters Catalyzed by PNP-Ruthenium Complexes with an N-Heterocyclic Carbene Ligand”, Org. Lett., 18, 3894–3897 (2016). DOI: 10.1021/acs.orglett.6b01900

A. Matsunami, S. Kuwata, and Y. Kayaki*, “Hydrodefluorination of Fluoroarenes Using Hydrogen Transfer Catalysts with a Bifunctional Iridium/NH Moiety”, ACS Catal., 6, 5181–5185 (2016). DOI: 10.1021/acscatal.6b01590

Y. Sato, Y. Kayaki*, and T. Ikariya*, “Cationic Iridium and Rhodium Complexes with C–N Chelating Primary Benzylic Amine Ligands as Potent Catalysts for Hydrogenation of Unsaturated Carbon–Nitrogen Bonds”, Organometallics, 35, 1257–1264 (2016). DOI: 10.1021/acs.organomet.6b00133

S. Hase, Y. Kayaki*, and T. Ikariya*, “Mechanistic Aspects of the Carboxylative Cyclization of Propargylamines and Carbon Dioxide Catalyzed by Gold(I) Complexes Bearing an N-Heterocyclic Carbene Ligand”, ACS Catal., 5, 5135–5140 (2015). DOI: 10.1021/acscatal.5b01335

A. Matsunami, Y. Kayaki*, and T. Ikariya*, “Enhanced Hydrogen Generation from Formic Acid by Half-Sandwich Ir(III) Complexes with Metal/NH Bifunctionality: A Pronounced Switch from Transfer Hydrogenation”, Chem. Eur. J., 21, 13513–13517 (2015). DOI: 10.1002/chem.201502412

K. Yamashita, S. Hase, Y. Kayaki*, and T. Ikariya*, “Highly Selective Carboxylative Cyclization of Allenylmethylamines with Carbon Dioxide Using N-Heterocyclic Carbene–Silver Catalysts”, Org. Lett., 17, 2334–2337 (2015). DOI: 10.1021/acs.orglett.5b00809

R. Watari*, Y. Kayaki, S.-i. Hirano, N. Matsumoto, and T. Ikariya*, “Hydrogenation of Carbon Dioxide to Formate Catalyzed by a Copper/1,8-Diazabicyclo[5.4.0]undec-7-ene System”, Adv. Synth. Catal., 357, 1369–1373 (2015). Selected as VIP (Very Important Publication). DOI: 10.1002/adsc.201500043

Y. Sato, Y. Kayaki, and T. Ikariya*, “Azametallametallocene Formation via Double sp3 C–H Activation of 6-Substituted Toluidines by a Half-sandwich Acetatoiridium Complex”, Chem. Lett., 44, 188–190 (2015). DOI: 10.1246/cl.140954

J. Moritani, Y. Kayaki, and T. Ikariya*, “Advantageous Asymmetric Ketone Reduction with Competitive Hydrogenation/Transfer Hydrogenation System Using Chiral Bifunctional Iridium Catalysts”, RSC Adv., 4 (105), 61001–61004 (2014). DOI: 10.1039/c4ra07854c

A. Ueno, Y. Kayaki, and T. Ikariya*, “Heterolysis of NH-Indoles by Bifunctional Amido Complexes and Applications to Carboxylation with Carbon Dioxide”, Organometallics, 33, 4479–4485 (2014). DOI: 10.1021/om500695a

T. Ikariya* and Y. Kayaki, “Hydrogenation of Carboxylic Acid Derivatives with Bifunctional Ruthenium Catalysts”, Pure Appl. Chem., 86, 933–943 (2014). DOI: 10.1515/pac-2014-0103

J. Moritani, Y. Hasegawa, Y. Kayaki, and T. Ikariya*, “Aerobic Oxidative Desymmetrization of meso-Diols with Bifunctional Amidoiridium Catalysts Bearing Chiral N-Sulfonyldiamine Ligands”, Tetrahedron Lett., 55, 1188–1191 (2014). DOI: 10.1016/j.tetlet.2013.12.103

S. Hase, Y. Kayaki, and T. Ikariya*, “NHC-Gold(I) Complexes as Effective Catalysts for Carboxylative Cyclization of Propargylamines with Carbon Dioxide”, Organometallics, 32, 5285–5288 (2013). DOI: 10.1021/om400949m

A. Ueno, Y. Kayaki, and T. Ikariya*, “Cycloaddition of Tertiary Aziridines and Carbon Dioxide Using a Recyclable Organocatalyst, 1,3-Di-tert-butylimidazolium-2-carboxylate: A Straightforward Access to 3-Substituted 2-Oxazolidones”, Green Chem., 15, 425–430 (2013). DOI: 10.1039/c2gc36414j

Y. Sato, Y. Kayaki, and T. Ikariya*, “Efficient Dynamic Kinetic Resolution of Racemic Secondary Alcohols by a Chemoenzymatic System Using Bifunctional Iridium Complexes with C–N Chelate Amido Ligands”, Chem. Commun., 48, 3635–3637 (2012). DOI: 10.1039/C2CC30333G

N. Miyamoto, T. Tsukahara, Y. Kachi, M. Harada, Y. Kayaki, T. Ikariya, and Y. Ikeda*, “Studies on Solubility of Uranyl Complexes in Supercritical Carbon Dioxide and Its Controlling Factors Using UV-Visible and 17O- and 19F-NMR Spectroscopy”, J. Nucl. Sci. Technol., 49, 37–46 (2012). DOI: 10.1080/18811248.2011.636531

T. Touge, T. Hakamata, H. Nara, T. Kobayashi, N. Sayo, T. Saito, Y. Kayaki, and T. Ikariya*, “Oxo-Tethered Ruthenium(II) Complex as a Bifunctional Catalyst for Asymmetric Transfer Hydrogenation and H2 Hydrogenation”, J. Am. Chem. Soc., 133, 14960–14963 (2011). DOI: 10.1021/ja207283t

S. Kamezaki, S. Akiyama, Y. Kayaki, S. Kuwata, and T. Ikariya*, “Asymmetric Nitrile-Hydration wuth Bifunctional Ruthenium Catalysts Bearing Chiral N-Sulfonyldiamine Ligands”, Tetrahedron: Asymmetry, 21, 1169–1172 (2010). DOI: 10.1016/j.tetasy.2010.03.011

T. Ikariya*, S. Kuwata, and Y. Kayaki, “Aerobic Oxidation with Bifunctional Molecular Catalysts”, Pure Appl. Chem., 82, 1471–1483 (2010). DOI: 10.1351/PAC-CON-09-09-11

Y. Kayaki, N. Mori, and T. Ikariya*, “Palladium-Catalyzed Carboxylative Cyclization of α-Allenyl Amines in Dense Carbon Dioxide”, Tetrahedron Lett., 50, 6491–6493 (2009). DOI: 10.1016/j.tetlet.2009.09.015

Y. Kayaki, M. Yamamoto, and T. Ikariya*, “N-Heterocyclic Carbenes as Efficient Organocatalysts for CO2 Fixation Reactions”, Angew. Chem. Int. Ed., 48, 4194–4197 (2009). Selected as a Hot Paper. DOI: 10.1002/anie.200901399

S. Shirai, H. Nara, Y. Kayaki, and T. Ikariya*, “Remarkable Positive Effect of Silver Salts on Asymmetric Hydrogenation of Acyclic Imines with Cp*Ir Complexes Bearing Chiral N-Sulfonylated Diamine Ligands”, Organometallics, 28, 802–809 (2009). DOI: 10.1021/om800926p

T. Seki, Y. Kokubo, S. Ichikawa, T. Suzuki, Y. Kayaki, and T. Ikariya*, “Mesoporous Silica-catalysed Continuous Chemical Fixation of CO2 with N,N’-Dimethylethylenediamine in Supercritical CO2: Efficient Synthesis of 1,3-Dimethyl-2-imidazolidinone”, Chem. Commun., 349–351 (2009). DOI: 10.1039/B817879H

T. Tsukahara, Y. Kachi, Y. Kayaki, T. Ikariya, and Y. Ikeda*, “1H-, 13C-, and 19F-NMR Studies on Molecular Interactions of CO2 with β-Diketones and UO2(β-diketonato)2DMSO Complexes in Supercritical CO2”, J. Phys. Chem. B, 112, 16445–16454 (2008). DOI: 10.1021/jp807041w

Y. Kayaki, T. Suzuki, and T. Ikariya*, “Utilization of N,N-Dialkylcarbamic Acid Derived from Secondary Amine and Supercritical Carbon Dioxide:  Stereoselective Synthesis of Z-Alkenyl Carbamates with a CO2–Soluble Ruthenium–P(OC2H5)3 Catalyst”, Chem. Asian J., 3, 1865–1870 (2008). DOI: 10.1002/asia.200800204

Y. Kayaki, H. Ikeda, J.-I. Tsurumaki, I. Shimizu, and A. Yamamoto*, “Catalytic Behavior of Cationic Hydridoruthenium(II) Complex, [RuH(NH3)(PMe3)4]+, in H2-Hydrogenation and Transfer Hydrogenation of Imines”, Bull. Chem. Soc. Jpn., 81, 1053–1061 (2008).  Selected as a BCSJ Award Article. DOI: 10.1246/bcsj.81.1053

S. Arita, T. Koike, Y. Kayaki, and T. Ikariya*, “Aerobic Oxidation of Alcohols with Bifunctional Transition Metal Catalysts Bearing C–N Chelate Ligands”, Chem. Asian J., 3, 1479–1485 (2008). DOI: 10.1002/asia.200800137

S. Arita, T. Koike, Y. Kayaki, and T. Ikariya*, “Synthesis and Reactivities of Cp*Ir Amide and Hydride Complexes Bearing C–N Chelate Ligands”, Organometallics, 27, 2795–2802 (2008). DOI: 10.1021/om800124f

S. Arita, T. Koike, Y. Kayaki, and T. Ikariya*, “Aerobic Oxidative Kinetic Resolution of Racemic Secondary Alcohols with Chiral Bifunctional Amido Complexes”, Angew. Chem. Int. Ed., 47, 2447–2449 (2008). Selected as VIP (Very Important Paper). DOI: 10.1002/anie.200705875

Y. Kachi, Y. Kayaki, T. Tsukahara, T. Ikariya, and Y. Ikeda*, “Comparative Studies on Exchange Reactions of Hexafluoroacetylacetonate in Bis(hexafluoroacetylacetonato)(dimethyl sulfoxide)dioxouranium(VI) in Nonaqueous Solvent and Supercritical CO2”, Inorg. Chem., 47, 349–359 (2008). DOI: 10.1021/ic701234q

Y. Kayaki, Y. Shimokawatoko, and T. Ikariya*, “Synthesis of Ruthenium(II) Complexes Containing Hydroxymethylphosphines and Their Catalytic Activities for Hydrogenation of Supercritical Carbon Dioxide”, Inorg. Chem., 46, 5791–5797 (2007). DOI: 10.1021/ic700470n

Y. Kayaki, M. Yamamoto, and T. Ikariya*, “Stereoselective Formation of α-Alkylidene Cyclic Carbonates via Carboxylative Cyclization of Propargyl Alcohols in Supercritical Carbon Dioxide”, J. Org. Chem., 72, 647–649 (2007). DOI: 10.1021/jo062094m

Y. Kachi, T. Tsukahara, Y. Kayaki, T. Ikariya, J. Sato, and Y. Ikeda*, “Raman Spectral Shifts of CO2 as Measure of CO2-philicity of Solutes in Supercritical Carbon Dioxide”, J. Supercrit. Fluids, 40, 20–26 (2007). DOI: 10.1016/j.supflu.2006.05.002

Y. Kayaki, M. Yamamoto, T. Suzuki, and T. Ikariya*, “Carboxylative Cyclization of Propargylamines with Supercritical Carbon Dioxide”, Green Chem., 8, 1019–1021 (2006). DOI: 10.1039/b603700c

T. Tsukahara, Y. Kachi, Y. Kayaki, T. Ikariya, and Y. Ikeda*, “Spectrophotometric Study on Solubility of UO2(β-diketonate)2dmso Complexes (β-diketonate = Acetylacetonate, Trifluoroacetylacetonate, Hexafluoroacetylacetonate; dmso = Dimethyl Sulfoxide) in Supercritical Carbon Dioxide”, J. Supercrit. Fluids, 39, 6–12 (2006). DOI: 10.1016/j.supflu.2005.12.016

O. Ihata, Y. Kayaki*, and T. Ikariya*, “Aliphatic Poly(urethane-amine)s Synthesized by Copolymerization of Aziridines and Supercritical Carbon Dioxide”, Macromolecules, 38, 6429–6434 (2005). DOI: 10.1021/ma050549o

O. Ihata, Y. Kayaki*, and T. Ikariya*, “Double Stimuli-responsive Behavior of Aliphatic Poly(urethane-amine)s Derived from Supercritical Carbon Dioxide”, Chem. Commun., 2268–2270 (2005). DOI: 10.1039/b418850k

O. Ihata, Y. Kayaki*, and T. Ikariya*, “Control of Thermoresponsive Behavior of Poly(urethane-amine)s Prepared by Copolymerization of Supercritical Carbon Dioxide and Aziridines”, Jpn. J. Polym. Sci. Tech. (Kobunshi Ronbunshu), 62, 196–199 (2005). (Japanese). DOI: 10.1295/koron.62.196

Y. Kayaki, T. Koda, and T. Ikariya*, “A Highly Effective (Triphenyl phosphite)palladium Catalyst for a Cross–Coupling Reaction of Allylic Alcohols with Organoboronic Acids”, Eur. J. Org. Chem., 4989–4993 (2004). DOI: 10.1002/ejoc.200400621

K. Hiwatari, Y. Kayaki, K. Okita, T. Ukai, I. Shimizu*, and A. Yamamoto*, “Selective Oxidative Carbonylation of Amines to Oxamides and Ureas Catalyzed by Pallladium Complexes”, Bull. Chem. Soc. Jpn., 77, 2237–2250 (2004). Named as a Selected Paper. DOI: 10.1246/bcsj.77.2237

T. Tsukahara, Y. Kayaki, T. Ikariya, and Y. Ikeda*, “13C-NMR Spectroscopic Evaluation of the Affinity of Carbonyl Compounds for Carbon Dioxide under Supercritical Conditions”, Angew. Chem. Int. Ed., 43, 3719–3722 (2004). DOI: 10.1002/anie.200454190

Y. Kayaki, T. Koda, and T. Ikariya*, “A Halide-Free Dehydrative Allylation Using Allylic Alcohols Promoted by a Palladium-Triphenyl Phosphite Catalyst”, J. Org. Chem., 69, 2595–2597 (2004). DOI: 10.1021/jo030370g

O. Ihata, Y. Kayaki*, and T. Ikariya*, “Synthesis of Thermoresponsive Polyurethane from 2-Methylaziridine and Supercritical Carbon Dioxide”, Angew. Chem. Int. Ed., 43, 717–719 (2004). DOI: 10.1002/anie.200352215

Y. Kayaki, Y. Shimokawatoko, and T. Ikariya*, “Amphiphilic Resin-Supported Ruthenium(II) Complexes as Recyclable Catalysts for the Hydrogenation of Supercritical Carbon Dioxide”, Adv. Synth. Catal., 345, 175–179 (2003). DOI: 10.1002/adsc.200390007

Y. Kayaki, T. Suzuki, Y. Noguchi, S. Sakurai, M. Imanari, and T. Ikariya*, “NMR Observation of Trialkylphosphite-Palladium(II) and -Ruthenium(II) Complexes in Supercritical Carbon Dioxide”, Chem. Lett., 31, 424–425 (2002). DOI: 10.1246/cl.2002.424

Y. Kayaki, H. Tsukamoto, M. Kaneko, I. Shimizu, A. Yamamoto*, M. Tachikawa, and T. Nakajima, “Experimental and Theoretical Studies on the Course of CO Insertion into Pt–C and Pd–C Bonds in Neutral and Cationic Complexes, [MR(Cl){P(CH3)3}2] and [MR{P(CH3)3}2(s)]+BF4- (M = Pt, Pd,  R = CH3, C6H5, s = coordinated solvent)”, J. Organomet. Chem., 622, 199–209 (2001). DOI: 10.1016/S0022-328X(00)00916-5

Y. Kayaki, T. Suzuki, and T. Ikariya*, “Water-Soluble Trialkylphosphine-Ruthenium(II) Complexes as Efficient Catalysts for Hydrogenation of Supercritical Carbon Dioxide”, Chem. Lett., 30, 1016–1017 (2001). DOI: 10.1246/cl.2001.1016

Y. Kayaki, Y. Noguchi, and T. Ikariya*, “Enhanced Product Selectivity in the Mizoroki-Heck Reaction Using a Supercritical Carbon Dioxide-Liquid Biphasic System”, Chem. Commun., 2245–2246 (2000). DOI: 10.1039/b006846m

K, Mikami*, S. Matsukawa, Y. Kayaki, and T. Ikariya*, “Asymmetric Mukaiyama Aldol Reaction of a Ketene Silyl Acetal of Thioester Catalyzed by a Binaphthol–Titanium Complex in Supercritical Fluoroform”, Tetrahedron Lett., 41, 1931–1934 (2000). DOI: 10.1016/S0040-4039(00)00063-0

T. Ikariya*, Y. Kayaki, Y. Kishimoto, and Y. Noguchi, “Highly Efficient Carbonylation Reactions of Organic Halides in Supercritical Carbon Dioxide”, Prog. Nucl. Energy, 37, 429–434 (2000). Proceedings of the third International Symposium on Global Environment and Nuclear Energy System. DOI: 10.1016/S0149-1970(00)00083-4

Y. Kayaki, Y. Noguchi, S. Iwasa, T. Ikariya*, and R. Noyori, “An Efficient Carbonylation of Aryl Halides Catalysed by Palladium Complexes with Phosphite Ligands in Supercritical Carbon Dioxide”, Chem. Commun., 1235–1236 (1999). DOI: 10.1039/a902942g

R. Kakino, K. Nagayama, Y. Kayaki, I. Shimizu, and A. Yamamoto*, “Formation of a Palladalactone Complex by C–O Bond-Cleavage of Diketene Promoted by a Zerovalent Palladium Complex”, Chem. Lett., 28, 685–686 (1999). DOI: 10.1246/cl.1999.685

Y. Kayaki, I. Shimizu, and A. Yamamoto*, “Synthesis and Properties of Dimethylbis(Phosphite)Palladium(II) and Monomethylbis(phosphite)palladium(II) Complexes”, Bull. Chem. Soc. Jpn., 70, 1141–1147 (1997). DOI: 10.1246/bcsj.70.1141

Y. Kayaki, I. Shimizu, and A. Yamamoto*, “Removal of a Palladium-Bound Tertiary Phosphine Ligand with Silver(I) Salts to Generate Cationic Monoorganopalladium(II) Complexes Having One Trimethylphosphine Ligand”, Bull. Chem. Soc. Jpn., 70, 1135–1140 (1997). DOI: 10.1246/bcsj.70.1135

Y. Kayaki, I. Shimizu, and A. Yamamoto*, “Comparison of the Reactivities of Neutral and Cationic Organopalladium Complexes Toward CO, Isocyanides, and Olefins”, Bull. Chem. Soc. Jpn., 70, 917–927 (1997). DOI: 10.1246/bcsj.70.917

Y. Kayaki, I. Shimizu, and A. Yamamoto*, “Reactivities of Neutral and Cationic Organopalladium Complexes”, Chem. Lett., 24, 1089–1090 (1995). DOI: 10.1246/cl.1995.1089

Y. Kayaki, F. Kawataka, I. Shimizu, and A. Yamamoto*, “Remarkable Rate Enhancement in CO Insertion into Pd-C Bond by Generating Cationic Organopalladium Complexes (PdR(S)L2)+BF4- (R = Alkyl Group, S = Acetone, L = Phosphine-Ligands) from Neutral Monoorganopalladium Complexes (PdR(X)L2) (X = Halide)”, Chem. Lett., 23, 2171–2174 (1994). DOI: 10.1246/cl.1994.2171

F. Kawataka, Y. Kayaki, I. Shimizu, and A. Yamamoto*, “Synthesis and Thermolysis Behavior of Monoethylpalladium Complexes, EtPd(X)(PMe3)2 (X = Electronegative Ligands)”, Organometallics, 13, 3517–3524 (1994). DOI: 10.1021/om00021a027

R. Watari* and Y. Kayaki*, “Copper Catalysts Unleashing the Potential for Hydrogenation of Carbon–Oxygen Bonds” Asian J. Org. Chem., 7, 2005–2014 (2018) (Focus Review). DOI: 10.1002/ajoc201800436

A. Matsunami and Y. Kayaki*, “Upgrading and Expanding the Scope of Homogeneous Transfer Hydrogenation”, Tetrahedron Lett., 59, 504–513 (2018) (Invited Digest Review). DOI: 10.1016/j.tetlet.2017.12.078

Y. Kayaki*, “Synthetic Chemistry of Alkenylgold Complexes Associated with Catalytic Intermediates”, Bull. Jpn. Soc. Coord. Chem., 66, 3–11 (2015). DOI: 10.4019/bjscc.66.3

A. Yamamoto*, Y. Kayaki, K. Nagayama, and I. Shimizu, “Chemistry of Monoorganopalladium Complexes Relevant to Catalysis”, Synlett, 925–937 (2000). DOI: 10.1055/s-2000-6645

T. Ikariya* and Y. Kayaki, “Supercritical Fluids as Reaction Media for Molecular Catalysis”, Catal. Surv. Jpn., 4, 39–50 (2000). DOI: 10.1023/A:1019032004130

Y. Kayaki* and R. Watari, “Harmonious Hydrogenation Catalysts”, Nature Catal., 1, 739–740 (2018). (News & Views).

Y. Kayaki, T. Ikariya, “Bifunctional Molecular Catalysts with Cooperating Amine/Amido Ligands”, TCI MAIL, 147, 2–9 (2012).

A. Matsunami, Y. Kayaki, and T. Ikariya, “Transfer Hydrogenation of Ketones to Alcohols” in Catalytic Reduction in Organic Synthesis 2, ed. by J. G. de Vries, Science of Synthesis Reference Library, Thieme, pp. 47–92 (2018).

Y. Kayaki and T. Ikariya, “Dehydrogenation” in Catalytic Oxidation in Organic Synthesis, ed. by K. Muñiz, Science of Synthesis Reference Library, Thieme, pp. 81–112 (2017).

T. Ikariya and Y. Kayaki, “Rhodium, [N-[(1S,2S)-2-(Amino-κN)-1,2-diphenylethyl]- 4-methylbenzenesulfonamidato-κN]chloro[(1,2,3,4,5-η)-1,2,3,4,5-pentamethyl-2,4,-cyclopentadien-1-yl]-, Stereoisomer”, in e-EROS Encyclopedia of Reagents for Organic Synthesis, John Wiley&Sons, RN01400, (2012). DOI: 10.1002/047084289X.rn01400; Online ISBN: 978047084289

Y. Kachi, Y. Kayaki, T. Tsukahara, T. Ikariya, and Y. Ikeda, “Kinetic Study on Exchange Reaction of Hexafluoroacetylacetonate in Bis(hexafluoroacetylacetonato)(dimethyl sulfoxide)dioxouranium(VI) in Supercritical CO2 by 19F NMR”, in Recent Advances in Actinide Science, eds. by I. May, R. Alvares, and N. Bryan, RSC Publishing, pp.566–568 (2006).

T. Tsukahara, Y. Kachi, Y. Kayaki, T. Ikariya, and Y. Ikeda, “Solubility of UO2(β-diketonato)2DMSO Complexes (β-diketonate = acetylacetonate, trifluoroacetylacetonate, hexafluoroacetylacetonate; DMSO = dimethyl sulfoxide) in Supercritical CO2”, in Recent Advances in Actinide Science, eds. by I. May, R. Alvares, and N. Bryan, RSC Publishing, pp.563–565 (2006).

Y. Kayaki and A. Yamamoto, “1,1-Insertion into Metal-Carbon Bond”, in Fundamentals of Molecular Catalysis eds. by A. Yamamoto and H. Kurosawa, Elsevier, pp. 373–409 (2003).

T. Ikariya and Y. Kayaki, “Organic and Catalytic Reactions in Supercritical Carbon Dioxide”, in Supercritical Fluids-Molecular Interactions, Physical Properties, and New Applications, eds. by Y. Arai, T. Sako, and Y. Takebayashi, Splinger–Verlag, pp. 381–403 (2001).

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