研究業績

Iridium-Catalyzed Asymmetric Allylation of Indoles via Kinetic Resolution of 1-Alken-4-yn-3-ols

Takahiro Sawano, Yuki Yasumura, Kyohei Kuwabara, Hikaru Sugiura, Kana Takahashi, Eri Ishikawa, Ryo Takeuchi, Synlett, 2023, 34, 2491-2495. [Link]

Iridium-Catalyzed Branch-Selective Hydroalkylation of Simple Alkenes with Malonic Amides and Malonic Esters

Takahiro Sawano, Masaki Ono, Ami Iwasa, Masaya Hayase, Juri Funatsuki, Ayumu Sugiyama, Eri Ishikawa, Takeshi Yoshikawa, Ken Sakata, and Ryo Takeuchi, J. Org. Chem., 2023, 88, 1545-1559. [Link]

Synthesis of azafluoranthenes by iridium-catalyzed [2 + 2 + 2] cycloaddition and evaluation of their fluorescence properties

Takahiro Sawano, Kaho Takamura, Tomoka Yoshikawa, Kayo Murata, Marina Koga, Risa Yamada, Takahide Saito, Kazumasa Tabata, Yugo Ishii, Wataru Kashihara, Tatsuya Nishihara, Kazuhito Tanabe, Tadashi Suzuki and Ryo Takeuchi, Org. Biomol. Chem., 2023, 21, 323-331. [Link]

Recent advances in iridium-catalyzed enantioselective allylic substitution using phosphoramidite-alkene ligands

Takahiro Sawano, Ryo Takeuchi, Catal. Sci. Tec., 2022, 12, 4100-4112.. [Link]

Iridium-catalyzed C3-selective asymmetric allylation of 7-azaindoles with secondary allylic alcohols

Takahiro Sawano, Takeshi Matsui, Marina Koga, Eri Ishikawa, Ryo Takeuchi, Chem. Commun., 2021, 57, 9684-9687.. [Link]

Regioselectivity in the Iridium-Catalyzed [2 + 2 + 2] Cycloaddition of Usymmetrical α,ω-Diynes with Nitrile: A DFT Study

Ken Sakata, Satoshi Shimada, Ryo Takeuchi, Organometallics, 2020, 39, 2091-2101. [Link]

Synthesis of Anthraquinones by Iridium-Catalyzed [2 + 2 + 2] Cycloaddition of a 1,2-Bis(propiolyl)benzene Derivative with Alkynes

Takahiro Sawano, Yuko Toyoshima, Ryo Takeuchi, Inorganics, 2019, 7, 138 [Link]

Two-photon absorption property of Cl-substituted diphenylacetylenes by optical-probing photoacoustic spectroscopy

Tetsuro Ishii, Saki Ando, Tasuku Isozaki, Ryo Takeuchi, Wataru Kashihara, and Tadashi Suzuki, J. Chem. Phys. 2019, 151, 134304 [Link]

Cationic Iridium Complex-Catalyzed Intermolecular Hydroalkylation of Unactivated Alkenes with 1,3-Diketones

Ryo Takeuchi, Jun Sagawa, and Masaki Fujii, Org. Lett. 2019, 21, 741−744 [Link]

Synthesis of Chiral Homoallylic Nitriles by Iridium-Catalyzed Allylation of Cyanoacetates

Asuka Matsunami, Kazuki Takizawa, Shogo Sugano, Yusuke Yano, Hiroaki Sato, and Ryo Takeuchi, J. Org. Chem. 2018, 83, 12239−12246 [Link]

Synthesis of Multisubstituted Azatriphenylenes by Iridium-Catalyzed [2 + 2 + 2] Cycloaddition of Biaryl-Linked Diynes with Nitriles

Ryo Takeuchi, Shunsuke Fujisawa, Yuzo Yoshida, Jun Sagano, Toru Hashimoto, and Asuka Matsunami, J. Org. Chem. 2018, 83, 1852−1860 [Link]

Iridium-Catalyzed Synthesis of Acylpyridines by [2 + 2 + 2] Cycloaddition of Diynes with Acyl Cyanides

Toru Hashimoto, Kaoru Kato, Reiko Yano, Tomoki Natori, Hiroki Miura, Ryo Takeuchi, J. Org. Chem. 2016, 81, 5393-5400 [Link]

Synthesis and X-ray crystal structure of novel cobalt(II) complexes having oligopyridine ligands

Gen Onodera, Goki Hirata, Takanao, Seike, Ryo Takeuchi, Masanari Kimura, Polyhedron 2016, 112, 43-50 [Link]

Iridium-catalyzed [2+2+2] cycloaddition of α,ω-diynes with cyanamides

Toru Hashimoto, Satoshi Ishii, Reiko Yano, Hiroko Miura, Ken Sakata, Ryo Takeuchi, Adv. Synth. Catal. 2015, 357, 3901-3916 [Link]

Iridium-catalyzed [2+2+2] cycloaddition of α,ω-diynes with alkynyl ketones and alkynyl esters

Toru Hashimoto, Arisa Okabe, Takeshi Mizuno, Mao Izawa, Ryo Takeuchi, Tetrahedron 2014, 70, 8681-8689 [Link]

Iridium-mediated [2+2+2] cycloaddition

Ryo Takeuchi, Transition-Metal-Mediated Aromatic Ring Construction, 2013, 161-181, Wiley-VCH, Ed. Ken Tanaka [Link]

Stereoselective synthesis of either (E)- or (Z)-silyl enol ether from the same acyclic α,β-unsaturated ketone using cationic rhodium complex-catalyzed 1,4-hydrosilylation

Gen Onodera, Ryosuke Hachisuka, Tomomi Noguchi, Hiroki Miura, Toru Hashimoto, Ryo Takeuchi, Tetrahedron Lett. 2014, 55, 310-313 [Link]