Faculty Profiles - SAITO, Susumu

Papers - SAITO, Susumu

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Hydrogenation of CO2 to MeOH Catalyzed by Highly Robust (PNNP)Ir Complexes Activated by Alkali Bases in Alcohol Reviewed

Bendik Grømer, Susumu Saito*

Vol. 62 ( 34 ) page： 14116 - 14123 2023.8

N‐Methylation of Twenty Different α‐Amino Acid Motifs Using Methanol under Metal‐Loaded Titanium Dioxide Photocatalysis Invited Reviewed

Yuki Hashiba, Shogo Mori, Ivven Huang, Yuna Morioka, Hiroshi Naka, Susumu Saito

Asian Journal of Organic Chemistry Vol. 12 ( 8 ) page： e202300230 2023.8

Sustainable Organic Synthesis Promoted on Titanium Dioxide using Coordinated Water and Renewable Energies/Resources Invited Reviewed

(8) Miho Yamauchi,* Hikaru Saito, Toshiki Sugimoto,* Shogo Mori, Susumu Saito*

COORDINATION CHEMISTRY REVIEWS Vol. 472 page： 214773 2022.12

Arylamines as More Strongly Reducing Organic Photoredox Catalysts than fac-[Ir(ppy)3] Invited Reviewed

Naoki Noto, Susumu Saito

ACS Catalysis Vol. 12 ( 24 ) page： 15400 - 15415 2022.12

A Highly Durable, Self-Photosensitized Mononuclear Ruthenium Catalyst for CO2 Reduction Invited Reviewed

Kenji Kamada, Hiroko Okuwa, Taku Wakabayashi, Keita Sekizawa, Shunsuke Sato, Takeshi Morikawa, Jieun Jung, Susumu SAITO

Synlett Vol. 33 ( 12 ) page： 1137 - 1141 2022.7

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Georg Thieme Verlag KG

A novel mononuclear ruthenium (Ru) complex bearing a PNNP-type tetradentate ligand is introduced here as a self-photosensitized catalyst for the reduction of carbon dioxide (CO2). When the pre-activation of the Ru complex by reaction with a base was carried out, an induction period of catalyst almost disappeared and the catalyst turnover numbers (TONs) over a reaction time of 144 h reached 307 and 489 for carbon monoxide (CO) and for formic acid (HCO2H), respectively. The complex has a long lifespan as a dual photosensitizer and reduction catalyst, due to the sterically bulky and structurally robust (PNNP)Ru framework. Isotope labeling experiments under 13CO2 atmosphere indicate that CO and HCO2H were both produced from CO2.

DOI： 10.1055/a-1709-0280

Web of Science

Importance of steric bulkiness of iridium photocatalysts with PNNP tetradentate ligands for CO2 reduction Invited Reviewed

(9) Kenji Kamada, Jieun Jung,* Yohei Kametani, Taku Wakabayashi, Yoshihito Shiota, Kazunari Yoshizawa, Seong Hee Bae, Manami Muraki, Masayuki Naruto, Keita, Sekizawa, Shunsuke Sato, Takeshi Morikawa and Susumu Saito*

Chem. Commun. Vol. 58 page： 9218 - 9221 2022.7

Photocatalytic CO2 Reduction Using an Iron–Bipyridyl Complex Supported by Two Phosphines for Improving Catalyst Durability Invited Reviewed

Taku Wakabayashi, Kenji Kamada, Keita Sekizawa, Shunsuke Sato, Takeshi Morikawa, Jieun Jung, Susumu Saito

Organometallics Vol. 41 ( 14 ) page： 1865 - 1871 2022.5

Phosphorus-Based Organocatalysis for the Dehydrative Cyclization of N-(2-Hydroxyethyl)amides into 2-Oxazolines Reviewed

Farzaneh Soleymani Movahed, Siong Wan Foo, Shogo Mori, Saeko Ogawa, Susumu Saito

The Journal of Organic Chemistry Vol. 87 ( 1 ) page： 243 - 257 2022.1

Recent advances in light-driven C–C bond formation via carbon dioxide activation Invited Reviewed

Synthesis Vol. 53 page： 3263 - 3278 2021.8

Preparation of platinum nanoparticle catalyst closely locating near photocatalyst titanium oxide and its catalytic activity to synthesize ethers from benzyl alcohols Reviewed

Yuki Wada, Toshiki, Akiyama, Kazuo Harada, Tetsuo Honma, Hiroshi Naka, Susumu Saito, Mitsuhiro Arisawa

RSC Adv. Vol. 11 page： 22230 - 22237 2021.6

C(sp3)–H bond functionalization with styrenes via hydrogen-atom transfer to an aqueous hydroxyl radical under photocatalysis Invited Reviewed

Shogo Mori, Susumu Saito

Green Chemistry Vol. 23 ( 10 ) page： 3575 - 3580 2021.5

Language：English Publishing type：Research paper (scientific journal) Publisher：Royal Society of Chemistry (RSC)

The redox-neutral addition of α-C–H bonds to styrenes was enabled via the hydrogen-atom transfer to aqueous hydroxyl radical generated by the oxidation of water under silver-nanoparticle-loaded titania photocatalysis.

DOI： 10.1039/d1gc00753j

Web of Science

Development of Effective Bidentate Diphosphine Ligands of Ruthenium Catalysts toward Practical Hydrogenation of Carboxylic Acids Invited Reviewed

Shota Yoshioka, Ke Wen, Susumu Saito

Bulletin of the Chemical Society of Japan Vol. 94 ( 5 ) page： 1510 - 1524 2021.5

Tris(o-phenylenedioxy)cyclotriphosphazene as a Promoter for the Formation of Amide Bonds Between Aromatic Acids and Amines Invited Reviewed

Susumu Saito, Farzaneh Soleymani Movahed, Dinesh N. Sawant, Dattatraya B. Bagal

Synthesis Vol. 52 ( 21 ) page： 3253 - 3262 2020.11

Language：English Publishing type：Research paper (scientific journal) Publisher：Georg Thieme Verlag KG

The atom-efficient formation of amide bonds has emerged as a top-priority research field in organic synthesis, as amide bonds constitute the backbones of proteins and represent an important structural motif in drug molecules. Currently, the increasing demand for novel discoveries in this field has focused substantial attention on this challenging subject. Herein, the degradable 1,3,5-triazo-2,4,6-triphosphorine (TAP) motif is presented as a new condensation system for the dehydrative formation of amide bonds between diverse combinations of aromatic carboxylic acids and amines. The underlying reaction mechanism was investigated, and potential catalyst intermediates were characterized using 31P NMR spectroscopy and ESI mass spectrometry.

DOI： 10.1055/s-0040-1707174

Web of Science

Development of Catalytic Reduction of Renewable Carbon Resources Using Well-Elaborated Organometallic Complexes with PNNP Tetradentate Ligands Invited Reviewed

Shota Yoshioka, Jieun Jung, Susumu Saito

Journal of Synthetic Organic Chemistry, Japan Vol. 78 ( 9 ) page： 856 - 866 2020.9

Catalytic Hydrogenation of N‐protected α‐Amino Acids Using Ruthenium Complexes with Monodentate Phosphine Ligands Invited Reviewed

Akari Saito, Shota Yoshioka, Masayuki Naruto, Susumu Saito

Advanced Synthesis & Catalysis Vol. 362 ( 2 ) page： 424 - 429 2020.1

Pd/TiO2-Photocatalyzed Self-Condensation of Primary Amines To Afford Secondary Amines at Ambient Temperature Reviewed

Wang Lyu-Ming, Kobayashi Kensuke, Arisawa Mitsuhiro, Saito Susumu, Naka Hiroshi

ORGANIC LETTERS Vol. 21 ( 2 ) page： 341 - 344 2019.1

Photocatalytic N-Methylation of Amines over Pd/TiO2 for the Functionalization of Heterocycles and Pharmaceutical Intermediates Reviewed

Wang Lyu-Ming, Jenkinson Kellie, Wheatley Andrew E. H, Kuwata Keiko, Saito Susumu, Naka Hiroshi

ACS SUSTAINABLE CHEMISTRY & ENGINEERING Vol. 6 ( 11 ) page： 15419-15424 - 15424 2018.11

Photocatalytic Transfer Hydrogenolysis of Allylic Alcohols on Pd/TiO2: A Shortcut to (S)-(+)-Lavandulol

Yuki Takada, Joaquim Caner, Selvam Kaliyamoorthy, Hiroshi Naka, Susumu Saito

CHEMISTRY-A EUROPEAN JOURNAL Vol. 23 ( 71 ) page： 18025 - 18032 2017.12

Language：English Publishing type：Research paper (scientific journal) Publisher：WILEY-V C H VERLAG GMBH

We report herein a regio- and stereoselective photocatalytic hydrogenolysis of allylic alcohols to form unsaturated hydrocarbons employing a palladium(II)-loaded titanium oxide; the reaction proceeds at room temperature under light irradiation without stoichiometric generation of salt wastes. Olefin and saturated alcohol moieties tolerated the reaction conditions. Hydrogen atoms were selectively incorporated into less sterically congested carbons of the allylic functionalities. This protocol allowed a short-step synthesis of (S)-(+)-lavandulol from (R)-(-)-carvone by avoiding otherwise necessary protection/deprotection steps.

DOI： 10.1002/chem.201704099

Web of Science

Dehydrogenation of Primary Aliphatic Alcohols by Au/TiO2 Photocatalysts Invited Reviewed

Masaki Shibata, Ryoko Nagata, Susumu Saito, Hiroshi Naka

CHEMISTRY LETTERS Vol. 46 ( 4 ) page： 580 - 582 2017.4

Language：English Publishing type：Research paper (scientific journal) Publisher：CHEMICAL SOC JAPAN

Dehydrogenation reaction of primary aliphatic alcohols to aldehydes and molecular hydrogen was achieved under UV-vis light irradiation in the presence of gold-loaded titanium dioxide (Au/TiO2) photocatalysts.

DOI： 10.1246/cl.161195

Web of Science

Investigation of the Corey Bromolactamization with N-Functionalized Allylamines Reviewed

Adrian Schulte, Simon Janich, Ernst-Ulrich Wuerthwein, Susumu Saito, Bernhard Wuensch

JOURNAL OF HETEROCYCLIC CHEMISTRY Vol. 53 ( 6 ) page： 1827 - 1837 2016.11

Language：English Publishing type：Research paper (scientific journal) Publisher：WILEY-BLACKWELL

N-Allylamines were employed for the diastereoselective synthesis of 8-bromo-substituted, cis-configured perhydroquinoxalines and beta-bromoalcohols. The yield and constitution of the products depend considerably on the functionalization of the allylic N-atom. Herein the reaction of glycine-derived cyclohex-2-enamines 5 under bromolactamization conditions (LiOtBu, NBS) is reported. Methyl carbamate 5a led diastereoselectively to the cis-configured perhydroquinoxaline 6a, whereas the amides 5b and 5c provided cis, trans-configured -bromoalcohols 7b and 7c. Based on high level theoretical calculations (DFT) factors controlling the cyclization of lithiated intermediates and the relative energies of possible products are discussed.

DOI： 10.1002/jhet.2493

Web of Science

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Papers - SAITO, Susumu