TEAM触媒固定化設計チーム

分子触媒をシリカ担体に均質かつ強固に固定化可能な多点結合型リンカーを開発しました。有機電子材料などの合成に有用な鈴木カップリング反応に本リンカーを使用した３点結合型固定化パラジウム錯体触媒を用いることで、生成物中へのパラジウムの混入防止が可能です。

リチウムイオン電池の電解液などとして有用な環状カーボネートを高効率で製造できる固定化分子触媒を開発しました。第４級ホスホニウム塩をシリカに固定化することで、連続流通反応での生産が可能になるだけでなく、固定化しない場合に比べて活性が100倍以上増大する特異な協働効果を見出しています。

酸化オスミウム触媒はオレフィンのジヒドロキシル化反応に汎用され、これまでに濾過で回収可能な固相固定化酸化オスミウム触媒が各種報告されています。私達は簡便かつ迅速に触媒を回収するために、磁性ナノ粒子であるマグネタイト（Fe3O4）に酸化オスミウム活性種を固定化し、磁石に引き寄せ回収可能なマグネタイト固定化酸化オスミウム触媒を開発しました。

温度変化に応じて水相と有機相を移動する配位子および遷移金属触媒を開発しました。反応時（加熱中）には、触媒が水相から有機相へ移動するため、例えば水に溶けにくい原料を用いた場合でも反応が円滑に進行します。室温で水相を分離することで容易に触媒の回収・再利用が可能であり、濾過等の作業が必要ありません。

シリカ骨格内にアルミニウムを含むメソポーラスシリカ（Al-MCM-41）が、重要な炭素-炭素結合生成反応であるカルボニル化合物のシアノシリル化や向山アルドール反応に、極めて高い触媒活性を示します。 Al-MCM-41は嵩高い基質にも有効であり、触媒リサイクルや流通反応での連続合成も可能です。

“2023”

Hiroki Koizumi, Katsuhiko Takeuchi,* Kazuhiro Matsumoto, Norihisa Fukaya, Kazuhiko Sato, Masahito Uchida, Seiji Matsumoto, Satoshi Hamura, Junya Hirota, Makoto Nakashige, and Jun-Chul Choi*
“Direct Conversion of Low-Concentration CO₂ into N‑Aryl and N‑Alkyl Carbamic Acid Esters Using Tetramethyl Orthosilicate with Amidines as a CO2 Capture Agent and a Catalyst”
J. Org. Chem., 88, 5015–5024 (2023).

Xiao-Tao Lin, Yusuke Ishizaka, Yoshifumi Maegawa, Katsuhiko Takeuchi, Shinji Inagaki,* Kazuhiro Matsumoto,* and Jun-Chul Choi*
“1,10-Phenanthroline-based periodic mesoporous organosilica: from its synthesis to its application in the cobalt-catalyzed alkyne hydrosilylation”
RSC Adv., 13, 7828–7833 (2023).

“2022”

Toshiki Nishitoba, Kazuhiro Matsumoto, Yusuke Ishizaka, Natsumi Arai, Katsuhiko Takeuchi, Norihisa Fukaya, Tadahiro Fujitani, Akira Endo, Hiroyuki Yasuda, Kazuhiko Sato, and Jun-Chul Choi*
“Controlled Growth of Platinum Nanoparticles on Amorphous Silica from Grafted Pt-Disilicate Complexes”
ACS Omega, 7, 47120–47128 (2022).

Katsuhiko Takeuchi, Kazuhiro Matsumoto, Norihisa Fukaya, Kohtaro Osakada, Kazuhiko Sato, and Jun-Chul Choi*
“Synthesis of organic carbamates as polyurethane raw materials from CO₂: the quest for metal alkoxides as regenerable reagents”
Dalton Trans., 51, 15631–15643 (2022). PERSPECTIVE

Katsuhiko Takeuchi, Kazuhiro Matsumoto, Norihisa Fukaya, Kazuhiko Sato, and Jun-Chul Choi*
“Synthesis of Glycerol Carbonate from Glycerol and CO₂ Using CaO as a Dehydrating Agent”
Asian J. Org. Chem., 11, e202200212 (2022).

Yusuke Ishizaka, Kazuhiro Matsumoto, Kazuhiko Sato, and Jun-Chul Choi*
“Multinuclear rhodium complexes supported by tetra-tert-butoxy disiloxide ligand: Synthesis, structure, and reactivity”
New J. Chem., 46, 16040–16046 (2022).

Masaki Okada, Katsuhiko Takeuchi, Kazuhiro Matsumoto, Tomoharu Oku, Takayoshi Yoshimura, Miho Hatanaka, and Jun-Chul Choi*
“Hydroxycarbonylation of Alkenes with Formic Acid Catalyzed by a Rhodium(III) Hydride Diiodide Complex Bearing a Bidentate Phosphine Ligand”
Organometallics, 41, 1640–1648 (2022).

Hiroki Koizumi, Katsuhiko Takeuchi,* Kazuhiro Matsumoto, Norihisa Fukaya, Kazuhiko Sato, Masahito Uchida, Seiji Matsumoto, Satoshi Hamura, and Jun-Chul Choi*
“One-Pot Synthesis of N-Substituted Carbamic Acid Esters from Low Concentrations of CO₂”
ACS Sustainable Chem. Eng., 10, 5507–5516 (2022).

Hideaki Matsuo, Jun-Chul Choi, Tadahiro Fujitani, and Ken-ichi Fujita*
“Carbonylation of o-phenylenediamines with CO₂ to 2-benzimidazolones catalyzed by alumina”
Tetrahedron Lett., 96, 153722 (2022).

Yusuke Ishizaka, Kazuhiro Matsumoto, Kazuhiko Sato, and Jun-Chul Choi*
“Phosphonate-Type Pseudo-Grafted Precursor: Efficient Surface Modification of Silica”
Chem. Methods, 2, e202100080 (2022).

“2021”

Katsuhiko Takeuchi, Ming-Yu Chen, Hao-Yu Yuan, Hiroki Koizumi, Kazuhiro Matsumoto, Norihisa Fukaya, Yoong-Kee Choe, Shinji Shigeyasu, Seiji Matsumoto, Satoshi Hamura, and Jun-Chul Choi*
“N-Aryl and N-Alkyl Carbamates from 1 Atmosphere of CO₂”
Chem. Eur. J., 27, 18066–18073 (2021).

Masaki Okada, Katsuhiko Takeuchi, Kazuhiro Matsumoto, Tomoharu Oku, and Jun-Chul Choi*
“Hydroxycarbonylation of alkenes with formic acid using rhodium iodide complex and alkylammonium Iodide”
Org. Biomol. Chem., 19, 8727–8734 (2021).

Yuto Seo, Wahyu S. Putro, Vladimir Ya. Lee, Tomoteru Mizusaki, Yukio Takagi, Yoong-Kee Choe, Kazuhiro Matsumoto, Jun-Chul Choi,* and Norihisa Fukaya*
“[Pd(4-R₃Si-IPr)(allyl)Cl]/K₂CO₃/EtOH: A Highly Effective Catalytic System for the Suzuki-Miyaura Cross-Coupling Reaction”
J. Organomet. Chem., 954–955, 122096 (2021).

Yusuke Ishizaka, Natsumi Arai, Kazuhiro Matsumoto, Hiroki Nagashima, Katsuhiko Takeuchi, Norihisa Fukaya, Hiroyuki Yasuda, Kazuhiko Sato, and Jun-Chul Choi*
“Bidentate Disilicate Framework for Bis-Grafted Surface Species”
Chem. Eur. J., 27, 12069–12077 (2021).

H. Matsuo, J.-C. Choi, T. Fujitani, K. Fujita
“Carboxylative cyclization of a propargylic amine with CO₂ catalyzed by a silica-coated magnetite”
Chem. Pharm. Bull., 69, 698–701 (2021).

S. Yamamoto, Z. Y. Zhou, G. Hiruta, K. Takeuchi, J.-C. Choi, T. Yasuda, T. Kanbara, J. Kuwabara
“One-pot synthesis of triazatriphenylene using the Povarov reaction”
J. Org. Chem., 86, 7920–7927 (2021).

Xiao-Tao Lin, Kazuhiro Matsumoto, Yoshifumi Maegawa, Katsuhiko Takeuchi, Norihisa Fukaya, Kazuhiko Sato, Shinji Inagaki,* and Jun-Chul Choi*
“Immobilized Zn(OAc)₂ on bipyridine-based periodic mesoporous organosilica for N-formylation of amines with CO₂ and hydrosilanes”
New J. Chem., 45, 9501–9505 (2021).

Hiroki Koizumi, Katsuhiko Takeuchi,* Kazuhiro Matsumoto, Norihisa Fukaya, Kazuhiko Sato, Masahito Uchida, Seiji Matsumoto, Satoshi Hamura, and Jun-Chul Choi*
“One-pot catalytic synthesis of urea derivatives from alkyl ammonium carbamates using low concentrations of CO₂”
Commun. Chem., 4, 66 (2021).

Takahiro Kawatsu, Sho Kataoka, Norihisa Fukaya, Jun-Chul Choi, Kazuhiko Sato, and Kazuhiro Matsumoto*
“Fluoride ion-initiated decarboxylation of silyl alkynoates to alkynylsilanes”
ACS Omega, 6, 12853–12857 (2021).

Koya Inomata, Yuki Naganawa, Zhi An Wang, Kei Sakamoto, Kazuhiro Matsumoto, Kazuhiko Sato, and Yumiko Nakajima*
“Selective hydrosilylation of allyl chloride with trichlorosilane”
Commun. Chem., 4, 63 (2021).

Takahiro Kawatsu, Keita Fuchise, Katsuhiko Takeuchi, Jun-Chul Choi, Kazuhiko Sato, and Kazuhiro Matsumoto*
Well-defined hydrogen and organofunctional polysiloxanes with spiro-fused siloxane backbones
Polym. Chem., 12, 2222–2227 (2021).

Takahiro Kawatsu, Jun-Chul Choi, Kazuhiko Sato, and Kazuhiro Matsumoto*
“Facile synthesis of sequence-defined oligo(dimethylsiloxane-co-diphenylsiloxane)s”
Macromol. Rapid Comm., 42, 2000593 (2021).

“2020”

W.S. Putro, A. Ikeda, S. Shigeyasu, S. Hamura, S. Matsumoto, V. Ya. Lee, J.-C. Choi, N. Fukaya
“Sustainable catalytic synthesis of diethyl carbonate”
Chemsuschem, 14, 842–846 (2020).

H. Matsuo, J.-C. Choi, T. Fujitani, K. Fujita
“Silica-catalyzed carboxylative cyclization of propargylic amines with CO₂”
Tetrahedron Lett., 61, 152557–152560 (2020).

K. Takeuchi, K.-W. Kim, Y.-J. Kim, N. Fukaya, K. Sato, J.-C. Choi
“Synthesis and structure of multinuclear Pd(II) complexes bridged by phosphide or azide ligands”
ACS Omega, 5, 29706–29713 (2020).

Q. Zhang, X.-T. Lin, N. Fukaya, T. Fujitani, K. Sato, J.-C. Choi
“Selective N-formylation/N-methylation of amines and N-formylation of amides and carbamates with carbon dioxide and hydrosilanes: promotion of the basic counter anions of the zinc catalyst”
Green Chem., 22, 8414-8422 (2020).

T. Chang, M. Tamura, Y. Nakagawa, N. Fukaya, J.-C. Choi, T. Mishima, S. Matsumoto, S. Hamura, K. Tomishige
“An effective combination catalyst of CeO₂ and zeolite for the direct synthesis of diethyl carbonate from CO2 and ethanol with 2,2-diethoxypropane as a dehydrating agent”
Green Chem., 22, 7321-7327 (2020).

Takahiro Kawatsu, Keiya Aoyagi, Yumiko Nakajima, Jun-Chul Choi, Kazuhiko Sato, and Kazuhiro Matsumoto*
“Catalytic decarboxylation of silyl alkynoates to alkynylsilanes”
Organometallics, 39, 2947-2950 (2020).

W. S. Putro, K. Fukaya, J.-C. Choi, S.J. Choi, T. Horikoshi, K. Sato, N. Fukaya
“Direct transformation of silica from natural resources to form tetramethoxysilane”
Bull. Chem. Soc. Jpn. 93, 958–962 (2020).

Q. Zhang, Y. Hao-Yu, X. Lin, N. Fukaya, T. Fujitani, K. Sato, J.-C. Choi
“Calcium carbide as a dehydrating agent for the synthesis of carbamates, glycerol carbonate, and cyclic carbonates from carbon dioxide”
Green Chem., 22, 4231–4239 (2020).

K. Takeuchi, Y. Tanaka, I. Tanigawa, F. Ozawa, J.-C-Choi
“Cu(I) complex bearing a PNP-pincer-type phosphaalkene ligand with a bulky fused-ring Eind group: properties and applications to FLP-type bond activation and catalytic CO₂ reduction”
Dalton Trans., 49, 3630–3637 (2020).

“2019”

Q. Zhang, N. Fukaya, T. Fujitani, J.-C. Choi
“Carbon dioxide hydrosilylation to methane catalyzed by zinc and other first-row transition metal salts”
Bull. Chem. Soc. Jpn., 92, 1945–1949 (2019).

T. Nguyen, N. Fukaya, S.J. Choi, K. Sato, J.-C. Choi, S. Kataoka
“Impact of the water removal method on tetraethyl orthosilicate direct synthesis: experiment and process assessment”
Ind. Eng. Chem. Res., 58, 19997–20002 (2019).

H. Matsuo, A. Fujii, J.-C. Choi, T. Fujitani, K. Fujita
“Carboxylative cyclization of propargylic amines with carbon dioxide-catalyzed by poly(amidoamine)-dendrimer-encapsulated gold nanoparticles”
Synlett, 30, 1914–1918 (2019).

Tomoteru Mizusaki, Kazuhiro Matsumoto, Katsuhiko Takeuchi, Norihisa Fukaya, Yukio Takagi, and Jun-Chul Choi*
“Direct installation of a silyl linker on ready-made NHC ligands: immobilized NHC-Pd complex for Buchwald-Hartwig amination”
Organometallics, 38, 1872–1876 (2019).

Keiya Aoyagi, Yu Ohmori, Koya Inomata, Kazuhiro Matsumoto, Shigeru Shimada, Kazuhiko Sato, and Yumiko Nakajima*
“Synthesis of hydrosilanes via Lewis-base-catalysed reduction of alkoxy silanes with NaBH₄”
Chem. Commun., 55, 5859–5862 (2019).

V. Butera, N. Fukaya, J.-C. Choi, K. Sato, Y.-K. Choe
“Mechanistic details on the conversion of Si-O to Si-C bonds using metal hydrides: a density functional theory study”
Eur. J. Inorg. Chem., 1335–1342 (2019).

R. Agata, H. Takaya, H. Matsuda, N. Nakatani, K. Takeuchi, T. Iwamoto, T. Hatakeyama, M. Nakamura
“Iron-catalyzed cross coupling of aryl chlorides with alkyl Grignard reagents: synthetic scope and FeII/FeIV mechanism supported by X-ray absorption spectroscopy and density functional theory calculations”
Bull. Chem. Soc. Jpn., 92, 381–390 (2019).

Norihisa Fukaya,* Tomoteru Mizusaki, Kouhei Hatakeyama, Yuto Seo, Yuuya Inaba, Kazuhiro Matsumoto, Vladimir Ya. Lee, Yukio Takagi, Junpei Kuwabara, Takaki Kanbara, Yoong-Kee Choe, and Jun-Chul Choi*
“[Pd(4-R3Si-IPr)(allyl)Cl], a family of silyl-substituted Pd-NHC complexes: catalytic systems for the Buchwald-Hartwig amination”
Organometallics, 38, 375–384 (2019).

Keiya Aoyagi, Kazuhiro Matsumoto, Shigeru Shimada, Kazuhiko Sato, Yumiko Nakajima*
“Catalytic reduction of alkoxysilanes with borane using a metallocene-type yttrium complex”
Organometallics, 38, 210–212 (2019).

Kazuhiro Matsumoto,* Shigeru Shimada, and Kazuhiko Sato
“Sequence‐controlled catalytic one‐pot synthesis of siloxane oligomers”
Chem. Eur. J., 25, 920–928 (2019).

“2018”

H. Taguchi, I. Tanigawa, K. Takeuchi, F. Ozawa
“On the geometrical stability of square‐planar platinum(0) complexes that bear a PNP‐Pincer‐type phosphaalkene ligand (Eind2‐BPEP)”
Chem. Eur. J., 24, 17055-17061 (2018).

H.-Y. Yuan, Q. Zhang, N. Fukaya, X.-T. Lin, T. Fujitani, J.-C. Choi
“Phosgene-free synthesis of carbamates using CO2 and titanium alkoxides”
Bull. Chem. Soc. Jpn., 91, 1481–1486 (2018).

V. Butera, N. Fukaya, J.-C. Choi, K. Sato, Y.-K. Choe
“Alkoxysilane production from silica and dimethylcarbonate catalyzed by alkali bases: a quantum chemical investigation of the reaction mechanism”
Inorg. Chim. Acta, 482, 70–76 (2018).

Teruo Beppu, Kei Sakamoto, Yumiko Nakajima,* Kazuhiro Matsumoto, Kazuhiko Sato, and Shigeru Shimada*
“Hydrosilane synthesis via catalytic hydrogenolysis of halosilanes using a metal-ligand bifunctional iridium catalyst”
J. Organomet. Chem., 869, 75–80 (2018).

A. Fujii, H. Matsuo, J.-C. Choi, T. Fujitani, K. Fujita
“Efficient synthesis of 2-oxazolidinones and quinazoline-2,4(1H,3H)-diones from CO2 catalyzed by tetrabutylammonium fluoride”
Tetrahedron, 74, 2914–2920 (2018).

Q. Zhang, H.-Y. Yuan, N. Fuakaya, J.-C. Choi
“Alkali metal salt as catalyst for direct synthesis of carbamate from carbon dioxide”
ACS Sustainable Chem. Eng., 6, 6675–6681 (2018).

T. Oku, M. Okada, M. Puripat, M. Hatanaka, K. Morokuma, J.-C. Choi
“Promotional effect of CH3I on hydroxycarbonylation of cycloalkene using homogeneous rhodium catalysts with PPh3 ligand”
J. CO2 Util., 25, 1–5 (2018).

Kazuhiro Matsumoto,* Yuki Oba, Yumiko Nakajima, Shigeru Shimada,* and Kazuhiko Sato*
“One‐pot sequence‐controlled synthesis of oligosiloxanes”
Angew. Chem. Int. Ed., 57, 4637–4641 (2018).

Kazuhiro Matsumoto, Jiadi Huang, Yuki Naganawa, Haiqing Guo, Teruo Beppu, Kazuhiko Sato, Shigeru Shimada* and Yumiko Nakajima*
“Direct Silyl–Heck reaction of chlorosilanes”
Org. Lett., 20, 2481–2484 (2018).

T. Tanaka, K. Morimoto, T. Ishida, T. Takahashi, N. Fukaya, J.-C. Choi, Y. Kabe
“Regioselective hydroamination of open-cage ketolactam derivatives of C60 with phenylhydrazine and water encapsulation”
Chem. Lett., 47, 503–506 (2018).

T. Nguyen, N. Fukaya, K. Sato, J.-C. Choi, S. Kataoka
“Technoeconomic and environmental assessment for design and optimization of tetraethyl orthosilicate synthesis process”
Ind. Eng. Chem. Res., 57, 192–2199 (2018).

H. Kawashima, M. Umezawa, M. Kijima
“Site‐selective hydrosilylation of botryococcene ‐ the algal biomass hydrocarbon oil”
ChemistrySelect, 3, 273–276 (2018).

“2017”

Y. Takenaka, N. Fukaya, S.J. Choi, G. Mori, T. Kiyosu, H. Yasuda, J.-C. Choi
“Synthesis of cyclic thiocarbonates from thiiranes and CS2 with silica-immobilized catalysts”
Ind. Eng. Chem. Res., 53, 891–896 (2017).

Q. Zhang, H.-Y. Yuan, N. Fukaya, H. Yasuda, J.-C. Choi
“Direct synthesis of carbamate from CO2 using a task-specific ionic liquid catalyst”
Green Chem., 19, 5614–5624, (2017).

A. Fujii, J.-C. Choi, K. Fujita
“Quaternary ammonium salt-catalyzed carboxylative cyclization of propargylic amines with CO₂”
Tetrahedron Lett., 58, 4483–4486 (2017).

T. Nguyen, S. Kataoka, N. Fukaya, K. Sato, J.-C. Choi, A. Endo
“Feasibility study of new synthesis route of tetraethoxysilane from rice hull ash”
Comput.-Aided Chem. Eng., 40, 703–708 (2017).

T. Tanaka, R. Nojiri, Y. Sugiyama, R. Sawai, T. Takahashi, N. Fukaya, J.-C. Choi, Y. Kabe
“Regioselective Diels–Alder reaction to open-cage ketolactam derivatives of C60”
Org. Biomol. Chem., 15, 6136-6146 (2017).

J.-C. Choi, H.-Y. Yuan, N. Fukaya, S. Onozawa, Q. Zhang, S.J. Choi, H. Yasuda
“Halogen‐free synthesis of carbamates from CO2 and amines uising titanium alkoxides”
Chem. Asian J., 12, 1297–1300 (2017).

V. Butera, Y.-K. Choe, N. Fukaya, J.-C. Choi, K. Sato
“Alcoxysilanes production from silica and dimethylcarbonate promoted by alkali bases: A DFT investigation of the reaction mechanism”
Abstr. Pap. Am. Chem. S., 253 (2017).

A. Fujii, J.-C. Choi, K. Fujita
“Synthesis of magnetically recoverable imidazolium hydrogen carbonate and its application as an N-heterocyclic carbene catalyst to cyanosilylation of aldehydes and ketones”
Tetrahedron Lett., 58, 1515–1518 (2017).

Q. Zhang, H.-Y. Yuan, N. Fukaya, H. Yasuda, J.-C. Choi
“A simple zinc catalyst for carbamate synthesis directly from CO₂”
ChemSusChem, 10, 1501–1508 (2017).

N. Fukaya, S.J. Choi, T. Horikoshi, S. Kataoka, A. Endo, H. Kumai, M. Hasegawa, K. Sato, J.-C. Choi
“Direct synthesis of tetraalkoxysilanes from silica and alcohols”
New J. Chem., 41, 2224–2226 (2017).

“2016”

H.-Y. Yuan, J.-C. Choi, S. Onozawa, N. Fukaya, S.J. Choi, H. Yasuda, T. Sakakura
“The direct synthesis of N-phenylcarbamates from CO₂, aniline, and dibutyltin dialkoxide”
J. CO₂ Util., 16, 282–286 (2016).

S. Yamane, T. Takahashi, Y. Suzuki, T. Miyadera, T. Koganezawa, K. Arai, Y. Akiyama, M. Chikamatsu, Y. Yoshida, H. Suda, J. Mizukado
“Thermal stabilization of organic photovoltaic cells using [6,6]-phenyl C61-butyric acid methyl ester analogs: Effects of alkyl substituents on the nanostructures of bulk heterojunction films and their stabilities”
Synthetic Met., 221, 61–66 (2016).

S. Banerjee, S. Kataoka, T. Takahashi, Y. Kamimura, K. Suzuki, K. Sato, A. Endo
Controlled formation of ordered coordination polymeric networks using silsesquioxane building blocks
Dalton Trans., 45, 17082–17086 (2016).

N. Fukaya, S.J. Choi, T. Horikoshi, H. Kumai, M. Hasegawa, H. Yasuda, K. Sato, J.-C. Choi
“Synthesis of tetramethoxysilane from silica and methanol using carbon dioxide and an organic dehydrating reagent”
Chem. Lett., 45, 828–830 (2016).

N. Fukaya, T. Miyaji, S. Onozawa, S.J. Choi, M. Ueda, Y. Takagi, J.-C. Choi, T. Sakakura, H. Yasuda
“Application of tripodal linker units to immobilized diphenylphosphine palladium complex catalysts for Suzuki-Miyaura coupling reactions of aryl bromide: Effect of immobilization method of phosphine ligand on catalytic performance”
J. Jpn. Petrol. Inst., 59, 118–125 (2016).

K. Fujita, A. Fujii, J. Sato, H. Yasuda
“Magnetically Recoverable N-Heterocyclic Carbene-Gold(I) Catalyst for Hydroamination of Terminal Alkynes”
Synlett, 27, 1941–1944 (2016).

K. Fujita, H. Hattori
“Synthesis of dendrimers with a bidentate phosphine core ligand having carboxy groups at the peripheral layer and their application to aqueous media cross-coupling reactions”
Chem. Pharm. Bull., 64, 1067-1072 (2016).

K. Fujita, J. Sato, A. Fujii, S. Onozawa, H. Yasuda
“A carboxylative cyclization of propargylic amines with carbon dioxide catalyzed by the N-heterocyclic carbene 1,3-Di-tert-butylimidazol-2-ylidene (ItBu)”
Asian J. Org. Chem., 5, 828–833 (2016).

K. Fujita, A. Fujii, J. Sato, S. Onozawa, H. Yasuda
“Synthesis of 2-oxazolidinone by N-heterocyclic carbene-catalyzed carboxylative cyclization of propargylic amine with CO₂”
Tetrahedron let., 57, 1282–1284 (2016).

K. Fujita, H. Hattori
“Suzuki-Miyaura reaction catalyzed by a dendritic phosphine-palladium complex”
Tetrahedron, 72, 1485–1492 (2016).

K. Fujita, K. Inoue, J. Sato, T. Tsuchimoto, H. Yasuda
“Carboxylative cyclization of propargylic amines with CO₂ catalyzed by dendritic N-heterocyclic carbene-gold(I) complexes”
Tetrahedron, 72, 1205–1212 (2016).

“2015”

K. Fujita, J. Sato, H. Yasuda
“Tautomerization of 5-alkylidene-2-oxazolidinone to 2-oxazolone by use of an N-heterocyclic carbene catalyst”
Synlett, 26, 1106-1110 (2015).

S. Yamane, J. Mizukado, T. Takahashi, Y. Suzuki, M. Sakurai, H. Hagihara, H. Suda
“Fulleropyrrolidine derivatives with benzophenone moiety as electron acceptors in thermally stable organic photovoltaic devices”
Chem. Lett., 44, 527-529 (2015).

S. Kataoka, S. Banerjee, A. Kawai, Y. Kamimura, J.-C. Choi, T. Kodaira, K. Sato, A. Endo
“Layered hybrid perovskites with micropores created by alkylammonium functional silsesquioxane interlayers”
J. Am. Chem. Soc., 137, 4158-4163 (2015).

“~2014”

K. Fujita, J. Sato, K. Inoue, T. Tsuchimoto, H. Yasuda
“Aqueous media carboxylative cyclization of propargylic amines with CO2 catalyzed by amphiphilic dendritic N-heterocyclic carbene-gold(I) complexes”
Tetrahedron Lett., 55, 3013-3016 (2014).

J. Blanchard, J.-M. Krafft, C. Dupont, C. Sayag, T. Takahashi, H. Yasuda
“On the influence of water traces on the acidity measurement of amorphous aluminosilicates”
Catal. Today, 226, 89-96 (2014).

N. Fukaya, S. Onozawa, M. Ueda, T. Miyaji, Y. Takagi, T. Sakakura, H. Yasuda
“Palladium phosphine complex catalysts immobilized on silica via a tripodal linker unit for the Suzuki-Miyaura coupling reactions of arylchlorides”
J. Mol. Catal. A: Chem., 385, 7-12 (2014).

J.-C. Choi, K. Shiraishi, Y. Takenaka, H. Yasuda, T. Sakakura
“Synthesis and reactivity of five-membered palladalactones from arylallenes and carbon dioxide: Relevance to catalytic lactone synthesis”
Organometallics, 32, 3411-3414 (2013).

K. Fujita, S. Umeki, H. Yasuda
“Magnetically recoverable osmium catalysts with osmium-diolate esters for dihydroxylation of olefins”
Synlett, 947-950 (2013).

S. Onozawa, T. Miyaji, N. Fukaya, M. Yoshinaga, M. Ueda, Y. Takagi, H. Yasuda
“A bidentate ligand immobilized on silica via a tripodal linker unit: Preparation and application to Suzuki-Miyaura coupling”
Chem. Lett., 42, 275-277 (2013).

Q.-W. Song, L.-N. He, J.-Q. Wang, H. Yasuda. T. Sakakura
Catalytic fixation of CO2 to cyclic carbonates by phosphonium chlorides immobilized on fluorous polymer
Green Chem., 15, 110-115 (2013).

K. Fujita, K. Inoue, T. Tsuchimoto, H. Yasuda
“Homogeneous dihydroxylation of olefins catalyzed by OsO42– immobilized on a dendritic backbone with a tertiary nitrogen at its core position”
Chem. Pharm. Bull., 60, 1594-1598 (2012).

S. Kataoka, Y. Takeuchi, A, Harada, T. Takagi, Y. Takenaka, N. Fukaya, H. Yasuda, T. Ohmori, A. Endo
“Microreactor containing platinum nanoparticles for nitrobenzene hydrogenation”
Appl. Catal. A, 427-428, 119-124 (2012).

Y. Takenaka, T. Kiyosu, G. Mori, J.-C. Choi, N. Fukaya, T. Sakakura, H. Yasuda
“Synthesis of cyclic sulfites from epoxides and sulfur dioxide with silica-immobilized homogeneous catalysts”
ChemSusChem, 5, 194-199 (2012).

J.-C. Choi, K. Kohno, M. Otsuka, H. Yasuda, T. Sakakura
“Synthesis of a rhodium(III) diethyl μ-carbonato complex in the reaction of CO₂, H₂O, and ethylene”
Organometallics, 30, 6060-6062 (2011).

N. Fukaya, M. Ueda, S. Onozawa, K. K. Bando, T. Miyaji, Y. Takagi, T. Sakakura, H. Yasuda
“Palladium complex catalysts immobilized on silica via a tripodal linker unit with amino groups: Preparation, characterization, and application to the Suzuki–Miyaura coupling”
J. Mol. Catal. A, 342-343, 58-66 (2011).

K. Fujita, S. Umeki, M. Yamazaki, T. Ainoya, T. Tsuchimoto, H. Yasuda
“Magnetically recoverable osmium catalysts for dihydroxylation of olefins”
Tetrahedron Lett., 52, 3137-3140 (2011).

S. Onozawa, N. Fukaya, K. Saitou, T. Sakakura, H. Yasuda
“PEG modification effect of silica on the Suzuki-Miyaura coupling reaction using silica-immobilized palladium catalysts”
Catal. Lett., 141, 866-871 (2011).

T. Miyaji, S. Onozawa, N. Fukaya, M. Ueda, Y. Takagi, T. Sakakura, H. Yasuda
“Diphenylphosphino functionalization of mesoporous silica using tripodal linker units”
J. Organomet. Chem., 696, 1565-1569 (2011).

Y. Takenaka, T. Kiyosu, G. Mori, J.-C. Choi, T. Sakakura, H. Yasuda
“Selective hydrogenation of nitroalkane to N-alkyl hydroxylamine over supported palladium catalysts”
Catal. Today, 164, 580-584 (2011).

N. Fukaya, S. Onozawa, M. Ueda, T. Miyaji, Y. Takagi, T. Sakakura, H. Yasuda
“Application of tripodal linker units to immobilized rhodium complex catalysts for asymmetric hydrogenation”
Chem. Lett., 40, 212-214 (2011).

N. Fukaya, H. Yamashita, H. Haga, T. Tsuchimoto, S. Onozawa, T. Sakakura, H. Yasuda
“Microwave-assisted organic functionalization of silica surfaces: Effect of selectively heating silylating agents”
J. Organomet. Chem., 696, 825-828 (2011).

N. Fukaya, H. Haga, T. Tsuchimoto, S. Onozawa, T. Sakakura, H. Yasuda
“Organic functionalization of the surface of silica with arylsilanes. A new method for synthesizing organic–inorganic hybrid materials”
J. Organomet. Chem., 695, 2540-2542 (2010).

Y. Takenaka, T. Kiyosu, J.-C. Choi, T. Sakakura, H. Yasuda
“Selective synthesis of N-alkyl hydroxylamines by hydrogenation of nitroalkanes using supported palladium catalysts”
ChemSusChem, 3, 1166-1168 (2010).

K. Fujita, M. Yamazaki, T. Ainoya, T. Tsuchimoto, H. Yasuda
“A recyclable dendritic osmium catalyst for homogeneous dihydroxylation of olefins”
Tetrahedron, 66, 8536-8543 (2010).

N. Fukaya, S. Onozawa, M. Ueda, K. Saitou, Y. Takagi, T. Sakakura, H. Yasuda
“Design and synthesis of new linker units for covalently immobilizing organic functional molecules”
Chem. Lett., 39, 402-403 (2010).

K. Iwanami, H. Seo, J.-C. Choi, T. Sakakura, H. Yasuda
“Al-MCM-41 catalyzed three-component Strecker-type synthesis of α-aminonitriles”
Tetrahedron, 66, 1898-1901 (2010).

K. Fujita, T. Ainoya, T. Tsuchimoto, H. Yasuda
“Homogeneous dihydroxylation of olefins catalyzed by a recyclable OsO42- core dendrimer”
Tetrahedron Lett., 51, 808-810 (2010).