List of Publications

2021-2020　　　2019-2018
2017-2016　　　2015-2014　　　2013-2012　　　2011-2010　　　2009-2008
2007-2006　　　2005-2004　　　2003-2002　　　2001-2000　　　1999-1998

    2022
  1. Molybdenum-Quinone-Catalyzed Deoxygenative Coupling of Aromatic Carbonyl Compounds.
    Banerjee, S.; Kobayashi, T.; Takai. K.; Asako, S.; Ilies, L.
    Org. Lett. 2022, 24 (39), 7242-7246.　(Communication) [LINK]
  2. A Transmetallation Pathway to a Dinuclear Chromium μ-Methylene Complex.
    Kurogi, T.; Uchida, K.; Wakamatsu, K.; Takai. K.
    Chem. Lett. 2022, 51 (5), 525-528.　(Communication) [LINK]
  3. Birch Reduction of Arenes Using Sodium Dispersion and DMI under Mild Conditions.
    Asako, S.; Takahashi, I.; Kurogi, T.; Murakami, Y.; Ilies, L; Takai. K.
    Chem. Lett. 2022, 51 (1), 38-40.　(Communication) [LINK]
  4. Regiodivergent Carbene/Alkyne Metathesis in Chromium-Mediated Coupling and Cyclization with 1,6-Enynes.
    Murai, M.; Taniguchi, R.; Takai, K.
    Bull. Chem. Soc. Jpn. 2021, 94 (12), 2848-2852.　(Article)
  5. Chromium Carbides and Cyclopropenylidenes.
    Kurogi, T.; Irifune, K.; Takai, K.
    Chem. Sci. 2021, 12 (42), 14281-14287. (Edge Article) [LINK]
  6. A Trinuclear Chromium(III) Chlorocarbyne.
    Kurogi, T.; Irifune, K.; Enoki, T.; Takai, K.
    Chem. Commun. 2021, 57 (42), 5199-5202. (Communication) [LINK]
  7. Halogen-Sodium Exchange Enables Efficient Access to Organosodium Compounds.
    Asako, S.; Takahashi, I.; Nakajima, H.; Ilies, L.; Takai, K.
    Commun. Chem. 2021, 4, Article number 76. (Communication) [LINK]
  8. Molybdenum-Catalyzed Deoxygenative Cyclization of Carbonyl Compounds for the Synthesis of Pyrido[2,1-a]isoindoles.
    Asako, S.; Kobayashi, T.; Ishihara, S.; Takai, K.
    Asian J. Org. Chem. 2021, 10 (4), 753-756. (Communication) [LINK]
  9. Structural Elucidation of a Methylenation Reagent of Esters: Synthesis and Reactivity of a Dinuclear Titanium(III) Methylene Complex.
    Kurogi, T.; Kuroki, K.; Moritani, S.; Takai, K.
    Chem. Sci. 2021, 12 (10), 3509-3515. (Edge Article) [LINK]
  10. Cyclization of 5-Alkynylketones with Chromium Alkylidene Equivalents Generated in situ from gem-Dichromiomethanes.
    Murai, M.; Taniguchi, R.; Kurogi, T.; Moritani, S.; Takai, K.
    Chem. Commun. 2020, 56, 9711-9714. (Communication) [LINK]
  11. Cyclization of 1,n-Enynes Initiated by the Addition Reaction of gem-Dichromiomethane Reagents to Alkynes.
    Murai, M.; Taniguchi, R.; Takai, K.
    Org. Lett. 2020, 22 (10), 3985-3988. (Communication) [LINK]
  12. Regioselective Sequential Silylation and Borylation of Aromatic Aldimines as a Strategy for Programming Synthesis of Multifunctionalized Benzene Derivatives.
    Murai, M.; Nishinaka, N.; Enoki, T.; Takai, K.
    Org. Lett. 2020, 22 (1), 316-321. (Communication) [LINK]
  13. Mechanistic Insights into Rhenium-Catalyzed Regioselective C-Alkenylation of Phenols with Internal Alkynes.
    Murai, M.; Yamamoto, M.; Takai, K.
    Chem. Eur. J. 2019, 25 (66), 15189-15197. (Article) [LINK]
  14. Rhenium-Catalyzed Cyclization via 1,2-Iodine and 1,5-Hydrogen Migration for the Synthesis of 2-Iodo-1H-indenes.
    Murai, M.; Takai, K.
    Org. Lett. 2019, 21 (17), 6756-6760. (Communication) [LINK]
  15. Deoxygenative Insertion of Carbonyl Carbon into a C(sp3)-H Bond: Synthesis of Indolines and Indoles.
    Asako, S.; Ishihara, S.; Hirata, K.; Takai, K.
    J. Am. Chem. Soc. 2019, 141 (25), 9832-9836. (Communication)　　 [LINK]
  16. Lithium-Free Synthesis of Sodium 2,2,6,6-Tetramethylpiperidide and Its Synthetic Applications.
    Asako, S.; Kodera, M.; Nakajima, H.; Takai, K.
    Adv. Synth. Catal. 2019, 361 (13), 3120-3123. (Communication)　　=VIP Paper=　　 [LINK]
  17. Regioselective Functionalization of 9,9-Dimethyl-9-silafluorenes by Borylation, Bromination, and Nitration.
    Murai, M.; Nishinaka, N.; Kimura, M.; Takai, K.
    J. Org. Chem. 2019, 84 (9), 5667-5676. (Article)　[LINK]
  18. Rhenium-Catalyzed Regioselective ortho-Alkenylation and [3+2+1]Cycloaddition of Phenols with Internal Alkynes.
    Murai, M.; Yamamoto, M.; Takai, K.
    Org. Lett. 2019, 21 (9), 3441-3445. (Communication)　[LINK]
  19. Chromium-Mediated Stannylcyclopropanation of Alkenes with (Diiodomethyl)stannanes.
    Murai, M.; Taniguchi, R.; Mizuta, C.; Takai, K.
    Org. Lett. 2019, 21 (8), 2668-2672. (Communication)　[LINK]
  20. Organosodium Compounds for Catalytic Cross-Coupling.
    Asako, S.; Nakajima, H.; Takai, K.
    Nat. Catal. 2019, 2, 297-303. (Article)　[LINK]
    Nature Catalysis -News and Views-    　　Chemistry World　　C&E News
  21. Palladium-Catalyzed Double-Bond Migration of Unsaturated Hydrocarbons Accelerated by Tantalum Chloride.
    Murai, M.; Nishimura, K.; Takai, K.
    Chem. Commun. 2019, 55 (19), 2769-2772. (Communication)　[LINK]
  22. Regioselective Arene Homologation through Rhenium-Catalyzed Deoxygenative Aromatization of 7-Oxabicyclo[2.2.1]hepta-2,5-dienes.
    Murai, M.; Ogita, T.; Takai, K.
    Chem. Commun. 2019, 55 (16), 2332-2335. (Communication)　[LINK]
  23. Unsymmetrical Difunctionalization of Two Different C-H Bonds in One Pot Under Transition-Metal Catalysis.
    Murai, M.; Takai, K.
    Synthesis 2019, 51 (1), 40-54. (Invited Review)
    as part of the 50 Years SYNTHESIS - Golden Anniversary Issue　[LINK]
  24. Use of Cyclopropane as C1 Synthetic Unit by Directed Retro-Cyclopropanation with Ethylene Release.
    Asako, S.; Kobashi, T.; Takai, K.
    J. Am. Chem. Soc. 2018, 140 (45), 15425-15429. (Article)　[LINK]
  25. Catalytic Cleavage and Reformation of Ethereal σ-Bonds.
    Murai, M.; Origuchi, K.; Takai, K.
    Chem. Lett. 2018, 47 (7), 927-930. (Communication) 　[LINK]
  26. Amine-Promoted anti-Markovnikov Addition of 1,3-Dicarbonyl Compounds with Terminal Alkynes under Rhenium Catalysis.
    Murai, M.; Uemura, E.; Takai, K.
    ACS Catal. 2018, 8 (6), 5454-5459. (Communication) 　[LINK]
  27. Iridium-Catalyzed Sequential Silylation and Borylation of Heteroarenes Based on Regioselective C-H Bond Activation.
    Murai, M.; Nishinaka, N.; Takai, K.
    Angew. Chem. Int. Ed. 2018, 57 (20), 5843-5847. (Communication)　[LINK]
  28. Synthesis of Borylcyclopropanes by Chromium-Promoted Cyclopropanation of Unactivated Alkenes.
    Murai, M.; Mizuta, C.; Taniguchi, R.; Takai, K.
    Org. Lett. 2017, 19 (22), 6104-6107. (Communication)　[LINK]
  29. Azulene-Fused Linear Polycyclic Aromatic Hydrocarbons with Small Bandgap, High Stability, and Reversible Stimuli Responsiveness.
    Murai, M.; Iba, S.; Ota, H.; Takai, K.
    Org. Lett. 2017, 19 (20), 5585-5588. (Communication)　[LINK]
  30. Rhenium-Catalyzed ortho-Alkylation of Phenols.
    Kuninobu, Y.; Yamamoto, M.; Nishi, M.; Yamamoto, T.; Matsuki, T.; Murai, M.; Takai, K.
    Org. Synth. 2017, 94, 280-291.　[LINK]
  31. Structural Characterization and Unique Catalytic Performance of Silyl Group-Substituted Geminal Dichromiomethane Complexes Stabilized with a Diamine Ligand.
    Murai, M.; Taniguchi, R.; Hosokawa, N.; Nishida, Y.; Mimachi, H.; Oshiki, T.; Takai, K.
    J. Am. Chem. Soc. 2017, 139 (37), 13184-13192. (Article)　　=Spotlight=　　[LINK]
  32. Iridium-Catalysed Hydrosilylation of Cyclopropanes via Regioselective Carbon-Carbon Bond Cleavage.
    Murai, M.; Nishiyama, A.; Nishinaka, N.; Morita, H.; Takai, K.
    Chem. Commun. 2017, 53, 9281-9284. (Communication)　[LINK]
  33. Rhodium-Catalyzed Silylative and Germylative Cyclization with Dehydrogenation Leading to 9-Sila- and 9-Germafluorenes: A Combined Experimental and Computational Mechanistic Study.
    Murai, M.; Okada, R.; Asako, S.; Takai, K.
    Chem. Eur. J. 2017, 23 (45), 10861-10870. (Article)　　=Hot Paper=　　[LINK]
  34. Iridium-Catalyzed Dehydrogenative Dimerization of Benzylmethylsilanes via Silylation of C(sp3)-H Bonds Adjacent to a Silicon Atom.
    Murai, M.; Takeuchi, Y.; Takai, K.
    Chem. Lett. 2017, 46 (7), 1044-1047. (Communication) [LINK]
  35. Rhenium-Catalyzed Construction of Polycyclic Hydrocarbon Frameworks by a Unique Cyclization of 1,n-Diynes Initiated by 1,1-Difunctionalization with Carbon Nucleophiles.
    Murai, M.; Uemura, E.; Hori, S.; Takai, K.
    Angew. Chem. Int. Ed. 2017, 56 (21), 5862-5866. (Communication) [LINK]
  36. Molybdenum-Catalyzed Stereospecific Deoxygenation of Epoxides to Alkenes.
    Asako, S.; Sakae, T.; Murai, M.; Takai, K.
    Adv. Synth. Catal. 2016, 358 (24), 3966-3970. (Communication)　　=VIP Paper=　　 [LINK]
  37. Synthesis and Properties of Sila[n]helicenes via Dehydrogenative Silylation of C-H Bonds under Rhodium Catalysis.
    Murai, M.; Okada, R.; Nishiyama, A. Takai, K.
    Org. Lett. 2016, 18 (17), 4380-4383. (Communication) [LINK]
  38. Palladium-Catalyzed Direct Arylation of Azulene Based on the Regioselective C-H Bond Activation.
    Murai, M.; Yanagawa, M.; Nakamura M.; Takai, K.
    Asian J. Org. Chem. 2016, 5 (5), 629-635. (Article) [LINK]
  39. Synthesis of Linear Allylsilanes via Molybdenum-Catalyzed Regioselective Hydrosilylation of Allenes.
    Asako, S.; Ishikawa, S.; Takai, K.
    ACS Catal. 2016, 6 (5), 3387-3395. (Article) [LINK]
  40. Rhodium-Catalyzed Synthesis of Chiral Spiro-9-silabifluorenes via Dehydrogenative Silylation: Mechanistic Insights into the Construction of Tetraorganosilicon Stereocenters.
    Murai, M.; Takeuchi, Y.; Yamauchi, K.; Kuninobu, Y.; Takai, K.
    Chem. Eur. J. 2016, 22 (17), 6048-6058. (Article)　　=Hot Paper=　　[LINK]
  41. Trace Amounts of Second Metal Elements Can Play a Key Role in the Generation of Organometallic Compounds.
    Takai, K.
    Bull. Chem. Soc. Jpn. 2015, 88 (11), 1511-1529. (Award Accounts) [LINK]
  42. Short Synthesis of [5]- and [7]Phenacenes with Silyl Groups at the Axis Positions.
    Roy, D.; Maekawa, H.; Murai, M.; Takai, K.
    Chem. Asian J. 2015, 10 (11), 2518-2524. (Article) [LINK]
  43. Stereospecific Deoxygenation of Aliphatic Epoxides to Alkenes under Rhenium Catalysis.
    Nakagiri, T.; Murai, M.; Takai, K.
    Org. Lett. 2015, 17 (13), 3346-3349. (Communication) [LINK]
  44. Rhodium-Catalyzed Synthesis of Benzosilolometallocenes via the Dehydrogenative Silylation of C(sp2)-H Bonds.
    Murai, M.; Matsumoto, K.; Takeuchi, Y.; Takai, K.
    Org. Lett. 2015, 17 (12), 3102-3105. (Communication) [LINK]
  45. Acceleration Effects of Phosphine Ligands on the Rhodium-Catalyzed Dehydrogenative Silylation and Germylation of Unactivated C(sp3)-H Bonds.
    Murai, M.; Takeshima, H.; Morita, H.; Kuninobu, Y.; Takai, K.
    J. Org. Chem. 2015, 80 (11), 5407-5414. (Article)　　=ACS Editor's Choice, Featured Article=　　[LINK]
  46. Iridium-Catalyzed Dehydrogenative Silylation of Azulenes Based on the Regioselective C-H Bonds Activation.
    Murai, M.; Takami, K.; Takeshima, H; Takai, K.
    Org. Lett. 2015, 17 (7), 1798-1801. (Communication) [LINK]
  47. Iridium-Catalyzed Intermolecular Dehydrogenative Silylation of Polycyclic Aromatic Compounds without Directing Groups.
    Murai, M.; Takami, K.; Takai, K.
    Chem. Eur. J. 2015, 21 (12), 4566-4570. (Article) [LINK]
  48. Rhenium-Catalysed Dehydrogenative Borylation of Primary and Secondary C(sp3)-H Bonds Adjacent to a Nitrogen Atom.
    Murai, M.; Omura, T.; Kuninobu, Y.; Takai, K.
    Chem. Commun. 2015, 51 (22), 4583-4586. (Communication) [LINK]
  49. Transition-Metal-Catalyzed Facile Access to 3,11-Dialkylfulminenes for Transistor Applications.
    Murai, M.; Maekawa, H.; Hamao, S.; Kubozono, Y.; Roy, D.; Takai, K.
    Org. Lett. 2015, 17 (3), 708-711. (Communication) [LINK]
  50. Rhenium-Catalyzed anti-Markovnikov Addition Reaction of Methanetricarboxylates to Unactivated Terminal Acetylenes.
    Hori, S.; Murai, M.; Takai, K.
    J. Am. Chem. Soc. 2015, 137 (4), 1452-1457. (Article) [LINK]
  51. Isolation and Structural Characterization of Geminal Di(iodozincio)methane Complexes Stabilized with Nitrogen Ligands.
    Nishida, Y.; Hosokawa, N.; Murai, M.; Takai, K.
    J. Am. Chem. Soc. 2015, 137 (1), 114-117. (Communication) [LINK]
  52. Rhodium-Catalyzed Dehydrogenative Germylation of C-H Bonds: New Entry to Unsymmetrically Functionalized 9-Germafluorenes.
    Murai, M.; Matsumoto, K.; Okada, R.; Takai, K.
    Org. Lett. 2014, 16 (24), 6492-6495. (Communication) [LINK]
  53. Rhenium-Catalyzed Synthesis of 2H-1,2-Oxaphosphorin 2-Oxides via the Regio- and Stereoselective Addition Reaction of β-Keto Phosphonates with Alkynes.
    Murai, M.; Nakamura, M.; Takai, K.
    Org. Lett. 2014, 16 (21), 5784-5787. (Communication) [LINK]
  54. Bismuth-Catalyzed Synthesis of Polycyclic Aromatic Hydrocarbons (PAHs) with a Phenanthrene Backbone via Cyclization and Aromatization of 2-(2-Arylphenyl)vinyl Ethers.
    Murai, M.; Hosokawa, N.; Roy, D.; Takai, K.
    Org. Lett. 2014, 16 (16), 4134-4137. (Communication) [LINK]
  55. Bismuth(III)-Catalyzed Dehydrative Etherification and Thioetherification of Phenolic Hydroxy Groups.
    Murai, M.; Origuchi, K.; Takai, K.
    Org. Lett. 2014, 16 (14), 3828-3831. (Communication) [LINK]
  56. Palladium-Catalyzed ortho-Selective C-H Borylation of 2-Phenylpyridine and Its Derivatives at Room Temperature.
    Kuninobu, Y.; Iwanaga, T.; Omura, T.; Takai, K.
    Angew. Chem. Int. Ed. 2013, 52 (16), 4431-4434. (Communication) [LINK]
  57. Rhodium-Catalyzed Asymmetric Synthesis of Spirosilabifluorene Derivatives.
    Kuninobu, Y.; Yamauchi, K.; Tamura, N.; Seiki, T.; Takai, K.
    Angew. Chem. Int. Ed. 2013, 52 (5), 1520-1522. (Communication) [LINK]
    Correction
  58. Rhodium-Catalyzed Intramolecular Silylation of Unactivated C(sp3)-H Bonds.
    Kuninobu, Y.; Nakahara, T.; Takeshima, H.; Takai, K
    Org. Lett. 2013, 15 (2), 426-428. (Communication) [LINK]
  59. Rhenium-Catalyzed Regio- and Stereoselective Synthesis of γ-Thio-α,β-unsaturated Ketones via Insertion of Terminal Alkynes into the C-S Bond.
    Nishi, M.; Kuninobu, Y.; Takai, K.
    Org. Lett. 2012, 14 (23), 6116-6118. (Communication) [LINK]
  60. Palladium-Catalyzed Synthesis of a Phosphine Oxide with a Chiral Phosphorus Center via C-H Phosphination.
    Kuninobu, Y.; Origuchi, K.; Takai, K.
    Heterocycles 2012, 85 (12), 3029-3034. (Communication) [LINK]
  61. Rhenium-Catalyzed Regioselective Synthesis of Multisubstituted Pyridines from β-Enamino Ketones and Alkynes via C-C Bond Cleavage.
    Yamamoto, S.-i.; Okamoto, K.; Murakoso, M.; Kuninobu, Y.; Takai, K.
    Org. Lett. 2012, 14 (12), 3182-3185. (Communication) [LINK]
  62. Development of Novel and Highly Efficient Methods to Construct Carbon-Carbon Bonds Using Group 7 Transition-Metal Catalysts.
    Kuninobu Y.; Takai, K.
    Bull. Chem. Soc. Jpn. 2012, 85 6, 656-671. (Award Accounts) [LINK]
  63. Synthesis of Multisubstituted Cyclopentadienes from Cyclopentenones Prepared via Catalytic Double Aldol Condensation and Nazarov Reaction Sequence.
    Nishina, Y.; Tatsuzaki, T.; Tsubakihara, A.; Kuninobu, Y.; Takai, K.
    Synlett 2011, (17), 2585-2589. (Communication) [LINK]
  64. Rhenium-Catalyzed Regio- and Stereoselective Addition of Two Carbon Units to Terminal Alkynes via Carbon-Carbon Bond Cleavage of β-Keto Sulfones.
    Kuninobu, Y.; Matsuzaki, H.; Nishi, M.; Takai, K.
    Org. Lett. 2011, 13 (11), 2959-2961. (Communication) [LINK]
  65. Manganese-Catalyzed Cleavage of a Carbon-Carbon Single Bond between Carbonyl and α Carbon Atoms of Ketones.
    Kuninobu, Y.; Uesugi, T.; Kawata, A.; Takai, K.
    Angew. Chem. Int. Ed. 2011, 50 (44), 10406-10408. (Communication) [LINK]
  66. Rhenium-Catalyzed Allylation of C-H Bonds of Benzoic and Acrylic Acids.
    Kuninobu, Y.; Ohta, K.; Takai, K.
    Chem. Commun. 2011, 47 (38), 10791-10793. (Communication) [LINK]
  67. Synthesis of meso Substituted Tetraarylalkynylporphyrins via Rhenium-Catalyzed Formation of Naphthalene Units.
    Samarat, A.; Kuninobu, Y.; Takai, K.
    Synlett 2011, (15), 2177-2180. (Communication) [LINK]
  68. Palladium-Catalyzed Synthesis of Dibenzophosphole Oxides via Intramolecular Dehydrogenative Cyclization.
    Kuninobu, Y.; Yoshida, T.; Takai, K.
    J. Org. Chem. 2011, 76 (18), 7370-7376. (Article) [LINK]
  69. Indium-Catalyzed Construction of Polycyclic Aromatic Hydrocarbon Skeletons via Dehydration.
    Kuninobu, Y.; Tatsuzaki, T.; Matsuki, T.; Takai, K.
    J. Org. Chem. 2011, 76 (17), 7005-7009. (Article) [LINK]
  70. Organic Reactions Catalyzed by Rhenium Carbonyl Complexes.
    Kuninobu, Y.; Takai, K.
    Chem. Rev. 2011, 111 (3), 1938-1953. (Review) [LINK]

  71. Rhenium-Catalyzed Insertion of Terminal Alkenes into a C(sp2)-H Bond and Successive Transfer Hydrogenation.
    Kuninobu, Y.; Nakahara, T.; Yu, P.; Takai, K.
    J. Organomet. Chem. 2011, 696 (1), 348-351. (Communication) [LINK]
  72. Synthesis of Functionalized Pentacenes from Isobenzofurans Derived from C-H Bond Activation.
    Kuninobu, Y.; Seiki, T.; Kanamaru, S.; Nishina, Y.; Takai, K.
    Org. Lett. 2010, 12 (22), 5287-5289. (Communication) [LINK]
  73. Cross-Coupling Reactions between C(sp2)-H and C(sp3)-H Bonds via Sequential Dehydrogenation and C-H Insertion.
    Kuninobu, Y.; Asanoma, D.; Takai, K.
    Synlett 2010, (19), 2883-2886. (Communication) [LINK]
  74. Iron-Catalyzed Synthesis of Glycine Derivatives via Carbon-Nitrogen Bond Cleavage Using Diazoacetate.
    Kuninobu, Y.; Nishi, M.; Takai, K.
    Chem. Commun. 2010, (46), 8860-8862. (Communication) [LINK]
  75. Rhodium-Catalyzed Synthesis of Silafluorene Derivatives via Cleavage of Silicon-Hydrogen and Carbon-Hydrogen Bonds.
    Ureshino, T.; Yoshida, T.; Kuninobu, Y.; Takai, K.
    J. Am. Chem. Soc. 2010, 132 (41), 14324-14326. (Communication) [LINK]
  76. Rhenium-Catalyzed Diastereoselective Synthesis of Aminoindanes via the Insertion of Allenes into a C-H Bond.
    Kuninobu, Y.; Yu, P.; Takai, K.
    Org. Lett. 2010, 12 (19), 4274-4276. (Communication) [LINK]
  77. Rhenium-Catalyzed Regioselective Synthesis of Phenol Derivatives from 1,3-Diesters and Terminal Alkynes.
    Kuninobu, Y.; Iwanaga, T.; Nishi, M.; Takai, K.
    Chem. Lett. 2010, 39 (8), 894-895. (Communication)　　=Editor's Choice=　　[LINK]
  78. Regioselective Functionalization of Alkanes by Sequential Dehydrogenation-Hydrozirconation.
    Kuninobu, Y.; Ureshino, T.; Yamamoto, S.-i.; Takai, K.
    Chem. Commun. 2010, 46 (29), 5310-5312. (Communication) [LINK]
  79. Rhenium- and Manganese-Catalyzed Carbon-Carbon Bond Formation Using 1,3-Dicarbonyl Compounds and Alkynes.
    Kuninobu, Y.; Kawata, A.; Yudha S. S.; Takata, H.; Nishi, M.; Takai, K.
    Pure Appl. Chem. 2010, 82 (7), 1491-1501. (Account) [LINK]

  80. Rhenium-Catalyzed Synthesis of Indenones by Novel Dehydrative Trimerization of Aryl Aldehydes via C-H Bond Activation.
    Kuninobu, Y.; Matsuki, T.; Takai, K.
    Org. Lett. 2010, 12 (13), 2948-2950. (Communication) [LINK]
  81. Indium-Catalyzed Synthesis of Keto Esters from Cyclic 1,3-Diketones and Alcohols and Application to the Synthesis of Seratrodast.
    Kuninobu, Y.; Kawata, A.; Noborio, T.; Yamamoto, S.-i.; Matsuki, T.; Takata, K.; Takai, K.
    Chem. Asian J. 2010, 5 (4), 941-945. (Article) [LINK]
  82. Rhenium- and Manganese-Catalyzed Synthesis of Aromatic Compounds from 1,3-Dicarbonyl Compounds and Alkynes.
    Kuninobu, Y.; Nishi, M.; Kawata, A.; Takata, H.; Hanatani, Y.; Yudha, S. S.; Iwai, A.; Takai, K.
    J. Org. Chem. 2010, 75 (2), 334-341. (Article) [LINK]
  83. Generation of Novel Nucleophilic Organometallic Species and Their Applications to Organic Synthesis.
    Takai, K.
    J. Synth. Org. Chem., Jpn. 2010, 68 (1), 3-18. (Award Account) [LINK]


    2009
  84. Rhenium-Catalyzed Addition of β-Enamino Esters to Allenes.
    Kuninobu, Y.; Yamashita, A.; Yamamoto, S.-i.; Yudha, S. S.; Takai, K.
    Synlett 2009, (18), 3027-3031. (Communication) [LINK]
  85. Tantalum Complexes Incorporating Tris(pyrazolyl)Borate Ligands: Syntheses, Structures, and Ethylene Polymerization Behavior.
    Michiue, K.; Oshiki, T.; Takai, K.; Mitani, M.; Fujita, T.
    Organometallics 2009, 28 (22), 6450-6457. (Article) [LINK]

  86. Rhenium- and Manganese-Catalyzed Insertion of Alkynes into a Carbon-Carbon Single Bond of Cyclic and Acyclic 1,3-Dicarbonyl Compounds.
    Kuninobu, Y.; Kawata, A.; Nishi, M.; Yudha, S. S., Chen, J.-j.; Takai, K.
    Chem. Asia J. 2009, 4 (9), 1424-1433. (Article)　　=VIP Paper=　　[LINK]
  87. Rhenium-Catalyzed Regio- and Stereoselective Dimerization and Cyclotrimerization of Terminal Alkynes.
    Kawata, A.; Kuninobu, Y.; Takai, K.
    Chem. Lett. 2009, 38 (8), 836-837. (Communication) [LINK]
  88. Rhenium-Catalyzed Regioselective Alkylation of Phenols.
    Kuninobu, Y.; Matsuki, T.; Takai, K.
    J. Am. Chem. Soc. 2009, 131 (29), 9914-9915. (Communication) [LINK]
  89. Rhenium-Catalyzed Insertion of Nonpolar and Polar Unsaturated Molecules into an Olefinic C-H Bond.
    Kuninobu, Y.; Fujii, Y.; Matsuki, T.; Nishina, Y.; Takai, K.
    Org. Lett. 2009, 11 (12), 2711-2714. (Communication) [LINK]
  90. Rhenium-Catalyzed Formation of Bicyclo[3.3.1]nonene Frameworks by a Reaction of Cyclic β-Keto Esters with Terminal Alkynes.
    Kuninobu, Y.; Morita, J.; Nishi, M.; Kawata, A.; Takai, K.
    Org. Lett. 2009, 11 (12), 2535-2537. (Communication) [LINK]
  91. Rhenium- and Manganese-Catalyzed Insertion of Acetylenes into β-Keto Esters: Synthesis of 2-Pyranones.
    Kuninobu, Y.; Kawata, A.; Nishi, M.; Takata, H.; Takai, K.
    Chem. Commun. 2008, (47), 6360-6362. (Communication) [LINK]
  92. Rhenium-Catalyzed Synthesis of Stereodefined Cyclopentenes from β-Keto Esters and Aliphatic Allenes.
    Yudha, S. S; Kuninobu, Y.; Takai, K.
    Angew. Chem. Int. Ed. 2008, 47 (48), 9318-9321. (Communication) [LINK]
  93. Reactions and Mechanistic Studies of Rhenium-Catalyzed Insertion of α,β-Unsaturated Carbonyl Compounds into a C-H Bond.
    Kuninobu, Y.; Nishina, Y.; Okaguchi, K.; Shouho, M.; Takai, K.
    Bull. Chem. Soc. Jpn. 2008, 81 (11), 1393-1401. (Article)　　=BCSJ Award Article=　　[LINK]
  94. Synthesis of Cp-Re Complexes via Olefinic C-H Activation and Successive Formation of Cyclopentadienes.
    Kuninobu, Y.; Nishina, Y.; Matsuki, T.; Takai, K.
    J. Am. Chem. Soc. 2008, 130 (43), 14062-14063. (Communication) [LINK]
  95. Rhenium-Catalyzed Coupling of Propargyl Alcohols and Several Nucleophiles via Dehydration.
    Kuninobu, Y.; Ueda, H.; Takai, K.
    Chem. Lett. 2008, 37 (8), 878-879. (Communication) [LINK]
  96. Rhenium-Catalyzed Synthesis of Multisubstituted Aromatic Compounds via C-C Single Bond Cleavage.
    Kuninobu, Y.; Takata, H.; Kawata, A.; Takai, K.
    Org. Lett. 2008, 10 (14), 3133-3135. (Communication) [LINK]
  97. Manganese-Catalyzed Construction of Tetrasubstituted Benzenes from 1,3-Dicarbonyl Compounds and Terminal Acetylenes.
    Kuninobu, Y.; Nishi, M.; Yudha S. S.; Takai, K.
    Org. Lett. 2008, 10 (14), 3009-3011.(Communication) [LINK]
  98. Manganese-Catalyzed Synthesis of Hydantoin Derivatives from Terminal Alkynes and Isocyanates.
    Kuninobu, Y.; Kikuchi, K.; Takai, K.
    Chem. Lett. 2008, 37 (7), 740-741. (Communication) [LINK]
  99. Hydroarylation of Acetylenes, Acrylates and Isocyanates with Heteroaromatic Compounds under Rhenium Catalysis.
    Kuninobu, Y.; Kikuchi, K.; Tokunaga, Y.; Nishina, Y.; Takai, K.
    Tetrahedron 2008, 64 (26), 5974-5981. (Article) [LINK]
  100. Rhenium-Catalyzed Synthesis of Indene Derivatives via C-H Bond Activation.
    Kuninobu, Y.; Nishina, Y.; Kawata, A.; Shouho, M.; Takai, K.
    Pure Appl. Chem. 2008, 80 (5), 1149-1154. (Account) [LINK]
  101. Rhenium-Catalyzed Hydroamidation of Unactivated Terminal Alkynes: Synthesis of (E)-Enamides.
    Yudha S. S.; Kuninobu, Y.; Takai, K.
    Org. Lett. 2007, 9 (26), 5609-5611. (Communication) [LINK]
  102. Copper(I) and Gold(I)-Catalyzed Synthesis of 2,4-Disubstituted Quinoline Derivatives from N-Aryl Propargyl Amines.
    Kuninobu, Y.; Inoue, Y.; Takai, K.
    Chem. Lett. 2007, 36 (12), 1422-1423. (Communication) [LINK]
  103. Indium-Catalyzed Retro-Claisen Condensation.
    Kawata, A.; Takata, K.; Kuninobu, Y.; Takai, K.
    Angew. Chem. Int. Ed. 2007, 46 (41), 7793-7795. (Communication) [LINK]
  104. Rhenium-Catalyzed [2+2] Cycloadditions of Norbornenes with Internal and Terminal Acetylenes.
    Kuninobu, Y.; Yu, P.; Takai, K.
    Chem. Lett. 2007, 36 (9), 1162-1163. (Communication) [LINK]
  105. Manganese-Catalyzed Insertion of Aldehydes into a C-H Bond.
    Kuninobu, Y.; Nishina, Y.; Takeuchi, T.; Takai, K.
    Angew. Chem. Int. Ed. 2007, 46 (34), 6518-6520. (Communication)　=Hot Paper=　 [LINK]
  106. Rearrangement of Indene Skeletons under Mild Conditions.
    Kuninobu, Y.; Ueda, H.; Kawata, A.; Takai, K.
    J. Org. Chem. 2007, 72 (18), 6749-6752. (Article) [LINK]
  107. Rhenium-Catalyzed Synthesis of Naphthalene Derivatives via Insertion of Aldehydes into a C-H Bond.
    Kuninobu, Y.; Nishina, Y.; Takai, K.
    Tetrahedron 2007, 63 (35), 8463-8468. (Article) [LINK]
  108. Rhenium-Catalyzed Amidation of Heteroaromatic Compounds via C-H Bond Activation.
    Kuninobu, Y.; Tokunaga, Y.; Takai, K.
    Chem. Lett. 2007, 36 (7), 872-873. (Communication) [LINK]
  109. Rhenium and Gold-Catalyzed Coupling of Aromatic Aldehydes with Trimethyl(phenylethynyl)silane: Synthesis of Diethynylmethanes.
    Kuninobu, Y.; Ishii, E.; Takai, K.
    Angew. Chem. Int. Ed. 2007, 46 (18), 3296-3299. (Communication) [LINK]
  110. Heterosubstituted Cyclopropanation of Alkenes with Organochromium Reagents Derived from Heterosubstituted Dihalomethanes, CrCl2, and Tetraalkylethylenediamine.
    Takai, K.; Toshikawa, S.; Inoue, A.; Kokumai, R.; Hirano, M.
    J. Organomet. Chem. 2007, 692 (1-3), 520-529. (Article) [LINK]
  111. Alkyne Exchange Reactions of Silylalkyne Complexes of Tantalum: Mechanistic Investigation and Its Application in the Preparation of New Tantalum Complexes Having Functional Alkynes (PhC≡CR (R = COOMe, CONMe2)).
    Oshiki, T.; Yamada, A.; Kawai, K.; Arimitsu, H.; Takai, K.
    Organometallics 2007, 26 (1), 173-182. (Article) [LINK]

    2006
  112. Titanium and Zirconium Complexes with Non-Salicylaldimine-Type Imine Phenoxy Chelate Ligands: Syntheses, Structures, and Ethylene-Polymerization Behavior.
    Suzuki, Y.; Tanaka, H.; Oshiki, T.; Takai, K.; Fujita, T.
    Chem. Asian J. 2006, 1 (6), 878-887. (Article) [LINK]

  113. Rhenium-Catalyzed Addition of Trimethylsilyl Acetylene to Aldimines.
    Kuninobu, Y.; Inoue, Y.; Takai, K.
    Chem. Lett. 2006, 35 (12), 1376-1377. (Communication) [LINK]
  114. Rhenium-Catalyzed Insertion of Aldehyde into a C-H Bond: Synthesis of Isobenzofuran Derivatives.
    Kuninobu, Y.; Nishina, Y.; Nakagawa, C.; Takai, K.
    J. Am. Chem. Soc. 2006, 128 (38), 12376-12377. (Communication) [LINK]
  115. Efficient Catalytic Insertion of Acetylenes into a Carbon-Carbon Single Bond of Non-Strained Cyclic Compounds under Mild Conditions.
    Kuninobu, Y.; Kawata, A.; Takai, K.
    J. Am. Chem. Soc. 2006, 128 (35), 11368-11369. (Communication) [LINK]
  116. Formal Hydrochromination of Alkynes under Nickel Catalysis. Regioselective Reductive Coupling of Alkynes and Aldehydes Leading to Allylic Alcohols.
    Takai, K.; Sakamoto, S.; Isshiki, T.; Kokumai, T.
    Tetrahedron 2006, 62 (32), 7534-7539. (Article) [LINK]
  117. Sequential Ruthenium-Catalyzed Hydroamination and Rhenium-Catalyzed C-H Bond Activation Leading to Indene Derivatives.
    Kuninobu, Y.; Nishina, Y.; Takai, K.
    Org. Lett. 2006, 8 (13), 2891-2893. (Communication) [LINK]
  118. Rhenium- and Aniline-Catalyzed One-Pot Annulation of Aromatic Ketones and α,β-Unsaturated Esters Initiated by C-H Bond Activation.
    Kuninobu, Y.; Nishina, Y.; Shouho, M.; Takai, K.
    Angew. Chem. Int. Ed. 2006, 45 (17), 2766-2768. (Communication) [LINK]
  119. Isocyanate Acting as a Carbonyl Precursor: Pyridyl Group-Assisted formation of 4H-Pyrido[1,2-a]pyrimidin-4-ones from Ketimines and Isocyanates.
    Kuninobu, Y.; Nishimura, S.; Takai, K.
    Org. Biomol. Chem. 2006, 4 (2), 203-205. (Communication) [LINK]
  120. Insertion of Polar and Nonpolar Unsaturated Molecules into Carbon-Rhenium Bonds Generated by C-H Bond Activation: Synthesis of Phthalimidine and Indene Derivatives.
    Kuninobu, Y.; Tokunaga, Y.; Kawata, A.; Takai, K.
    J. Am. Chem. Soc. 2006, 128 (1), 202-209. (Article) [LINK]
  121. Dramatic Rate Acceleration by a Diphenyl-2-pyridylphosphine Ligand in the Hydration of Nitriles Catalyzed by Ru(acac)2 Complexes.
    Oshiki, T.; Yamashita, H.; Sawada, K.; Utsunomiya, M.; Takahashi, K.; Takai, K.
    Organometallics 2005, 24 (26), 6287-6290. (Communication) [LINK]

  122. A Novel Heteroligated Phenoxy-Based Titanium Complex: Structure, Stability, and Ethylene Polymerization Behavior.
    Suzuki, Y.; Oshiki, T.; Tanaka, H.; Takai, K.; Fujita, T.
    Chem. Lett. 2005, 34 (10), 1458-1459. (Communication) [LINK]

  123. Synthesis of Bis(phenoxyimine) Ti Alkyl Complexes and Observation of Living Species by 1H NMR Spectroscopy.
    Makio, H.; Oshiki, T.; Takai, K.; Fujita, T.
    Chem. Lett. 2005, 34 (10), 1382-1383. (Communication) [LINK]

  124. Rhenium-Catalyzed Insertion of Terminal Acetylenes into a C-H Bond of Active Methylene Compounds.
    Kuninobu, Y.; Kawata, A.; Takai, K.
    Org. Lett. 2005, 7 (22), 4823-4825. (Communication) [LINK]
  125. Rhenium-Catalyzed Formation of Indene Frameworks via C-H Bond Activation: [3+2] Annulation of Aromatic Aldimines and Acetylenes.
    Kuninobu, Y.; Kawata, A.; Takai, K.
    J. Am. Chem. Soc. 2005, 127 (39), 13498-13499. (Communication) [LINK]
  126. Addition of Organochromium Reagents to Carbonyl Compounds.
    Takai, K.
    Org. React. 2004, 64, 253-612. (Review) [LINK]

  127. Transformation of Aldehydes into (E)-1-Alkenylsilanes and (E)-1-Alkenylboronic Esters with a Catalytic Amount of a Chromium Salt.
    Takai, K.; Kunisada, Y.; Tachibana, Y.; Yamaji, N.; Nakatani, E.
    Bull. Chem. Soc. Jpn. 2004, 77 (8), 1581-1586. (Article)　　=Selected Paper=　　[LINK]
  128. Preparation of Cyclopropylsilanes from Terminal Alkenes with Organochromium Reagents.
    Takai, K.; Hirano, M.; Toshikawa, S.
    Synlett 2004, (8), 1347-1350. (Communication) [LINK]
  129. Catalytic Performance of Tantalum-η2-Alkyne Complexes [TaCl3(R1C≡CR2)L2] for Alkyne Cyclotrimerization.
    Oshiki, T.; Nomoto, H.; Tanaka, K.; Takai, K.
    Bull. Chem. Soc. Jpn. 2004, 77 (5), 1009-1011. (Article) [LINK]

    2003
  130. Stereoselective Iodocyclopropanation of Terminal Alkenes with Iodoform, Chromium(II) Chloride, and N,N,N',N'-Tetraethylethylenediamine.
    Takai, K.; Toshikawa, S.; Inoue, A.; Kokumai, R.
    J. Am. Chem. Soc. 2003, 125 (43), 12990-12991. (Communication) [LINK]
  131. Regioselective Reductive Coupling of Alkynes and Aldehydes Leading to Allylic Alcohols.
    Takai, K.; Sakamoto, S.; Isshiki, T.
    Org. Lett. 2003, 5 (5), 653-655. (Communication) [LINK]
  132. Successive Carbon-Carbon Bond Formation by Sequential Generation of Radical and Anionic Species with Manganese and Catalytic Amounts of PbCl2, and Me3SiCl.
    Takai, K.; Ueda, T.; Ikeda, N.; Ishiyama, T.; Matsushita, H.
    Bull. Chem. Soc. Jpn. 2003, 76 (2), 347-353. (Article) [LINK]

  133. Preparation, Structural Characterization, and Reactions of Tantalum-Alkyne Complexes TaCl3(R1C≡CR2)L2 (L2 = DME, Bipy, and TMEDA; L = Py).
    Oshiki, T.; Tanaka, K.; Yamada, J.; Ishiyama, T.; Kataoka, Y.; Mashima, K.; Tani, K.; Takai, K.
    Organometallics 2003, 22 (3), 464-472. (Article) [LINK]

  134. Cross Pinacol-type Coupling Reactions between α,β-Unsaturated Ketones and Aldehydes with Low-Valent Metals.
    Takai, K.; Morita, R.; Matsushita, H.; Toratsu, C.
    Chirality 2003, 15 (1), 17-23. (Communication) [LINK]

    2002

  135. Activation of Manganese Metal with a Catalytic Amount of Lead and Me3SiCl and Its Application to Organic Synthesis.
    Takai, K.
    J. Synth. Org. Chem., Jpn. 2002, 60(11), 1055-1062. (Accounts) [LINK]

  136. Generation of a Geminal Dicarbenoid of Chromium: Formation of Allenes from Terminal Alkenes in One-Pot.
    Takai, K.; Kokumai, R.; Toshikawa, S.
    Synlett 2002, (7), 1164-1166. (Communication) [LINK]

  137. Indium-Catalyzed Reductionof Allyl Bromide with Gallium or Aluminum. Formation of Allylgallium and Allylaluminum Sesquibromides.
    Takai, K.; Ikawa, Y.
    Org. Lett. 2002, 4 (10), 1727-1729. (Communication) [LINK]

  138. Tertiary Amine-Accelerated Allylgallation of Terminal Alkynes.
    Takai, K.; Ikawa, Y.; Ishii, K.; Kumanda, M.
    Chem. Lett. 2002, (2), 172-173. (Communication) [LINK]

    2001
  139. Preparation of 2,5-Disubstituted Furans from Terminal Ynones and Aldehydes with CrCl2, Me3SiCl, and H2O.
    Takai, K.; Morita, R.; Sakamoto, S.
    Synlett 2001, (10), 1614-1616. (Communication) [LINK]

  140. Generation of Chromioenamines by Reduction of O-Acetyloximes with Chromium(II) and their Application.
    Takai, K.; Katsura, N.; Kunisada, Y.
    Chem. Commun. 2001, (18), 1724-1725. (Communication) [LINK]
  141. Reactions of Coordinated Geminal Dichromium Reagents with Aldehydes: Stereoselective Formation of (Z)-2-Chloro-2-alken-1-ols.
    Takai, K.; Kokumai, R.; Nobunaka, T.
    Chem. Commun. 2001, (12), 1128-1129. (Communication) [LINK]
  142. Stereoselective Cross Pinacol-type Coupling between α,β-Unsaturated Ketones and Aldehydes with Chromium(II) in the Presence of R3SiCl.
    Takai, K.; Morita, R.; Toratsu, C.
    Angew. Chem. Int. Ed. 2001, 40 (6), 1116-1119. (Communication) [LINK]

    2000

  143. Nucleophilic Addition of Organochromium Reagents to Carbonyl Compounds.
    Takai, K.; Nozaki, H.
    Proc. Jpn. Acad. Ser. B 2000, 76 (8), 123-131. (Review) [LINK]

  144. Cross Coupling Reactions between α,β-Unsaturated Ketones and Aldehydes with CrCl2: Aldol Condensation and Cyclopropanol Formation.
    Toratsu, C.; Fujii, T.; Suzuki. T.; Takai, K.
    Angew. Chem. Int. Ed. 2000, 39 (15), 2725-2727. (Communication) [LINK]

  145. Improved Synthesis and Crystal Structure of TiCl3(tmeda)(thf): A Highly Stereoselective Pinacol Coupling Reagent for Aromatic Aldehydes.
    Oshiki, T.; Kiriyama, T.; Tsuchida, K.; Takai, K.
    Chem. Lett. 2000, (4), 334-335. (Communication) [LINK]

    1999
  146. One-pot Transformation of RCHO to (E)-RCH=CHSiMe3 Using CHI3, Mn, Me3SiCl, and a Catalytic Amount of CrCl2.
    Takai, K.; Hikasa, S.; Ichiguchi, T.; Sumino, N.
    Synlett 1999, (11), 1769-1771. (Communication) [LINK]

  147. A Practical Transformation of Aldehydes into (E)-Iodoalkenes with Geminal Dichromium Reagents.
    Takai, K.; Ichiguchi, T.; Hikasa, S.
    Synlett 1999, (8), 1268-1270. (Communication) [LINK]

    1998

  148. Isolation and Reactions of a Tantalum-Imine Complex TaCl3(dme)(PhCH=NCH2Ph).
    Takai, K.; Ishiyama, T.; Yasue, H.; Nobunaka, T.; Itoh, M.; Oshiki, T.; Mashima, K.; Tani, K.
    Organometallics 1998, 17 (23), 5128-5132. (Article) [LINK]

  149. B12-Catalyzed Generation of Allylic Chromium Reagents from 1,3-Dienes, CrCl2, and Water.
    Takai, K.; Toratsu, C.
    J. Org. Chem. 1998, 63 (19), 6450-6451. (Communication) [LINK]

  150. Generation of α-Boryl Radicals by Reduction of α-Haloalkylboronic Esters with CrCl2.
    Takai, K.; Shinomiya, N.; Ohta, M.
    Synlett 1998, (3), 253-254. (Communication) [LINK]

  151. Three-Component Coupling Reactions of Alkyl Iodides, 1,3-Dienes, and Carbonyl Compounds by Sequential Generation of Radical and Anionic Species with CrCl2.
    Takai, K.; Matsukawa, N.; Takahashi, A.; Fujii, T.
    Angew. Chem. Int. Ed. 1998, 37 (1/2), 152-155. (Communication) [LINK]