安全・安心かつ豊かな社会が希求される中、化学技術の果たす役割も益々大きなものになりつつあります。当チームでは、化学プロセスにおける廃棄物の更なる低減、エネルギー効率の一層の向上、循環型資源への原材料転換を目指し、その実現のためのキーテクノロジーである触媒の分子・原子レベルでの設計・開発を行っています。具体的には、当センターの４つの中核的課題の中の「触媒固定化技術」に主として関与する中で、様々な化学品を高効率、高品質かつ低環境負荷で製造するための分子触媒の固定化・リサイクル技術の開発や、触媒の低コスト化、省資源のための貴金属代替・省量化技術の開発に取り組んでいます。また、二酸化炭素からの有用化学品製造技術や有機ケイ素化学品の高効率製造技術の開発も合わせて行っています。
研究チーム長 松本 和弘（Ph.D.）
研究テーマ
- 二酸化炭素から基礎化学品・機能性化学品を製造するための触媒反応の開発
- 分子触媒の固定化・リサイクル技術の開発
- 有機ケイ素化学品を高効率製造するための触媒反応の開発
二酸化炭素から基礎化学品・機能性化学品を製造するための触媒反応の開発
二酸化炭素 (CO2) から含酸素化学品を合成する技術の開発を行なっています。主な合成ターゲットは、ポリウレタンやポリカーボネート材料の原料となる有機カルバメートやジアルキルカーボネートです。火力発電所排気ガス相当の低濃度CO2や常圧CO2を使用することのできる反応系の開発を目指しています。
分子触媒の固定化・リサイクル技術の開発
分子触媒の強固な固定化が可能な 多点結合型リンカー
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。
シリカ固定化分子触媒における協働効果
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。
磁石で回収可能なマグネタイト固定化 酸化オスミウム触媒
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。
温度に応じて相間移動する 液相固定化触媒
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。
ナノ空孔を反応場とする高効率合成
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。
有機ケイ素化学品を高効率製造するための触媒反応の開発
シロキサン化合物の配列構造を精密に制御して合成する技術を基盤として、新規シリコーン材料/含シロキサンハイブリッド材料の創出やシロキサンのモノマー配列構造と各種物性との相関を体系化することを目指した研究開発を行なっています。
メンバー
研究成果
“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).
