1. Crystallization-Induced Diastereomeric Transformation of Chiral Ozanimod Key Intermediate Using Homogeneous Ir-Based Racemization Catalyst
    Ryusei Oketani*, Koki Shiohara, Ichiro Hisaki*

    Cryst. Growth. Des. 2024. accepted. (Preprint)
  2. Transition Behaviors of Isostructural Hydrogen-Bonded Frameworks Composed of Naphthalene, Quinoxaline, and Pyrazinopyrazine Derivatives
    Haruka Kubo, Shunsuke Konishi,
    Ryusei Oketani, Takashi Hayashi, Ichiro Hisaki*
    Chem. Eur. J.. 2024. accepted. (Preprint)
  3. Semicontinuous Temperature Cycle-Induced Deracemization Using an Axially Chiral Naphthamide
    Ryusei Oketani*, Riku Naito, Ichiro Hisaki*

    Org. Process Res. Dev. 2024. accepted (Preprint)
  4. A Hydrogen-Bonded, Hexagonally-Networked, Layered Framework with Large Aperture Designed by Structural Synchronization of a Macrocycle and Supramolecular Synthon
    Hiroki Yoshimura, Ryusei Oketani, Miki Naruoka, Norimitsu Tohnai, Ichiro Hisaki*

    Precision Chemistry 2024. 2, 221-228. Open Access
    Selected for Cover picture
  5. Photo-responsive Hydrogen-Bonded Molecular Networks Capable of Retaining Crystalline Periodicity after Isomerization
    Koki Kasuya, Ryusei Oketani, Souta Matsuda, Fumitaka Ishiwari, Akinori Saeki, Hiroyasu Sato, Ichiro Hisaki*

    Angew. Chem. Int. Ed. 2024. e202404700.
  6. Thermal Fluctuation-induced Selective CO2 Uptake of Seemingly Nonporous N,C-Protected Dipeptide Crystals as Elucidated by in situ X-ray Crystallographic Analysis
    Kazuaki Yamanaka, Ryusei Oketani, Yuya Mori, Takashi Sato, Seiji Tsuzuki, Hiroki Takahashi, and Hirohito Tsue*
    CrystEngComm 2024, 26, 2314-2321.
  7. An Expanded Hydrogen-bonded Organic Framework Formed by A Tetrakis(terphenyl)ethene Derivative
    Mao Yamaguchi, Mario de la Hoz Tomás, Ayano Fujiwara, Ryusei Oketani, Kohei Okubo, Kouki Oka, Norimitsu Tohnai, Abderrazzak Douhal,* Ichiro Hisaki*
    Bull. Chem. Soc. Japan 2024, 97, uoae004.
  8. Statically and Dynamically Flexible Hydrogen-bonded Frameworks Based on 4,5,9,10-Tetrakis(4-carboxyphenyl)pyrene
    Taito Hashimoto, Ryusei Oketani, Asato Inoue, Kohei Okubo, Kouki Oka, Norimitsu Tohnai, Kazuhide Kamiya, Shuji Nakanishi, Ichiro Hisaki*

    Chem. Commun. 202359, 7224-7227. Open Access
  9. Construction of Hydrogen-bonded Crystalline Frameworks Using Tetrakis(carboxyphenyl)dimethyl-dihydropyrene Derivative
    Yuna Yamaguchi, Kouki Kasuya, Ryusei Oketani, Ichiro Hisaki*

    Chem. Lett. 202352, 542-545.
  10. Overcoming a Solid Solution System on Chiral Resolution: Combining Crystallization and Enantioselective Dissolution
    Ryusei Oketani*, Koki Shiohara, Ichiro Hisaki*

    Chem. Commun. 2023, 59, 6175-6178.  Open Access (Preprint)
    Selected for Inside Front Cover
  11. Use of Conglomerates Mixed Crystals to Deracemize a Stable Racemic Compound-Forming System
    Clément Pinètre, François-Xavier Gendron, Reiko Kuroda, Ryusei Oketani, Christian Aupetit, Thierry Buffeteau, Gérard Coquerel*

    Chem. Eur. J. 2023, e202300441. 
  12. Isomeric Effect of Naphthyl Spacers on Structures and Properties of Isostructural Porous Crystalline Frameworks
    Yuto Suzuki, Mao Yamaguchi, Ryusei Oketani, Ichiro Hisaki*

    Mater. Chem. Front. 2023, 7, 106-116.
    Selected to HOT Article 
  13. Single Crystalline, Non-stoichiometric Cocrystals of Hydrogen-Bonded Organic Frameworks
    Taito Hashimoto, Ryusei Oketani, Masaki Nobuoka, Shu Seki, Ichiro Hisaki*

    Angew. Chem. Int. Ed. 2023, 62, e202215836.
    Selected for HOT Paper
    Selected for Back Cover Picture
  14. Quinoxaline-annelated Hexadehydro[12]annulene: Use of A New Building Block to Construct a Hydrogen-bonded Hexagonal Molecular Network
    Mayu Kobayashi, Haruka Kubo, Ryusei Oketani, Ichiro Hisaki*

    CrystEngComm, 2022, 24, 5036-5040.
  15. Slip-Stacking of Benzothiadiazole Can Provide a Robust Structural Motif for Porous Hydrogen-bonded Organic Frameworks
    Zhuxi Yang, Akinori Saeki, Asato Inoue, Ryusei Oketani, Kazuhide Kamiya, Shuji Nakanishi, Takayoshi Nakamura,* Ichiro Hisaki*

    Cryst. Growth Des. 2022, 22, 4472-4479.
  16. Geometrically Mismatched Hydrogen-bonded Framework Composed of Tetratopic Carboxylic Acid
    Zhuxi Yang, Taito Hashimoto, Ryusei Oketani, Takayoshi Nakamura,* Ichiro Hisaki*
    Chem. Eur. J. 2022, e202201571.

    Selected to HOT Paper 
  17. Order-Disorder Phase Transition between High and Low Z′ Crystal Structures of P1 Space Group
    Ryusei Oketani*, Hiroki Takahashi, Simon Clevers, Akira Oyamada, Ichiro Hisaki, Gerard Coquerel, Kazuaki Yamanaka, Hirohito Tsue

    Cryst. Growth Des. 2022, 22, 2230-2238.
    Selected to Front Cover (April 2022, Volume 22, Number 4) 
    To be published as part of a Crystal Growth and Design virtual special issue on Emerging Investigators 2022
  18. The Polymorphism of 2-benzoyl-N,N-diethylbenzamide
    Lygia S. Moraes*, Jie Liu, Elumalai Gopi, Ryusei Oketani, Alan R. Kennedy, Yves H. Geerts*

    Crystals 2021, 11, 1004.
  19. Two-dimensional Porous Framework Assembled through Hydrogen-bonds and Dipole-dipole Interactions
    Zhuxi Yang, Ayana Moriyama, Ryusei Oketani, Takayoshi Nakamura, Ichiro Hisaki*
    Chem. Lett. 2021, 50, 1909-1912.
  20. Quasi single-crystalline transformation of porous frameworks accompanied by interlayer rearrangements of hydrogen bonds
    Haruka Kubo, Ryusei Oketani, Ichiro Hisaki*

    Chem. Commun. 2021, 57, 8568-8571.
    Selected to Front Cover 
    (Volume 57, Issue 69) 
  21. Deracemization in a complex quaternary system with a second-order asymmetric transformation using phase diagram studies
    Ryusei Oketani, Francesco Marin, Paul Tinnemans, Marine Hoquante, Anne Laurent, Clément Brandel, Pascal Cardinael, Hugo Meekes, Elias Vlieg, Yves Geerts, Gérard Coquerel*

    Chem. Eur. J., 2019. 25, 13890-13898. 
    Selected to
    Hot Paper and Front Cover (Volume 25, Issue 61) 
    Cover Profile (Chem. Eur. J. 2019, 25, 13837)
    is also available.
  22. Resolution of an atropoisomeric naphthamide by second-order asymmetric transformation: A highly productive technique
    Ryusei Oketani
    , Marine Hoquante, Clément Brandel, Pascal Cardinael, and Gérard Coquerel*

    Org. Process Res. Dev., 2019, 23, 1197-1203.
  23. NH-form of a threonine-based Schiff base in the solid state
    Ryusei Oketani, Hiroki Takahashi, Marine Hoquante, Clément Brandel, Pascal Cardinael, Gérard Coquerel*
    J. Mol. Struct., 2019, 1184, 36-40.
  24. Effect of Substituents on TiO2 photocatalytic Oxidation of trans-Stilbenes
    Teruyuki Miyake, Yuichiro Hashimoto, Seihou Jinnai, Ryusei Oketani, and Suguru Higashida*
    Bull. Chem. Soc. Japan, 2019, 92, 55-60.
  25. Practical Role of Racemization Rates in Deracemization Kinetics and Process Productivities
    Ryusei Oketani, Marine Hoquante, Clément Brandel, Pascal Cardinael, and Gérard Coquerel*
    Cryst. Growth Des., 2018, 18, 6417-6420.
  26. Formation of Lactones by Decarboxylation of Aromatic Diacids via TiO2-Mediated Photocatalytic Reactions in Acetonitrile Solution
    Ryusei Oketani, Teruyuki Miyake, Seihou Jinnai, Takuya Fukui, Hidetaka Tsujimoto, Michio Matsumura, and Suguru Higashida*

    Chem. Lett. 2016, 45, 801-803.

Book chapter

  1. Azacalixarene: an ever-growing class in the calixarene family
    Hirohito Tsue* and Ryusei Oketani
    In Advances in Organic Crystal Chemistry: Comprehensive Reviews 2015, R.Tamura and M.Miyata (eds.), Springer, Chapter 13, 241-261.

REview and Tutorial paper

  1. キラル化合物の融点相図の作成と結晶化による光学分割への適用
    熱測定, 202451, 78-84.
  2. コングロメレートとの固溶体形成によるラセミ化合物のデラセミ化
    桶谷龍成*、黒田玲子*、Clement Pinetre, Francois-Xavier Gendron, Christian Aupetit, Thierry Buffeteau, Gerard Coquerel
    有機結晶部会ニュースレター, 2023, 56, 3-4.
  3. 結晶化とエナンチオ選択的な溶解を組み合わせた固溶体の光学分割
    有機結晶部会ニュースレター, 202355, 7-8.
  4. ピレンを基盤とする静的・動的に柔軟な水素結合性フレームワーク
    橋本泰利、桶谷龍成、 久木一朗*
    有機結晶部会ニュースレター, 202355, 9-10.
  5. ピレン/ヒドロピレンを基盤とした非化学量論的組成の水素結合性フレームワーク
    橋本泰利、桶谷龍成、 久木一朗*
    有機結晶部会ニュースレター, 202354, 6-7.
  6. 水素結合の組み換えをともなう有機多孔質構造体の単結晶構造相転移
    久保遥、桶谷龍成、 久木一朗*
    有機結晶部会ニュースレター, 202250, 8-9.