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9 results in Authors: Eiji Yashima

Polymer Science

Working Paper

Synthesis of Single-Handed Helical Spiro-Conjugated Ladder Polymers through Quantitative and Chemoselective Cyclizations

Wei Zheng, Tomoyuki Ikai, Eiji Yashima

Version 1 posted 26 February 2021

384

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Polymer Science

Working Paper

2,2´-Tethered Binaphthyl-Embedded One-Handed Helical Ladder Polymers: Impact of the Tether Length on Helical Geometry and Chiroptical Property

Tomoyuki Ikai, Namiki Mishima, Takehiro Matsumoto, Sayaka Miyoshi, Kosuke Oki, Eiji Yashima

Version 1 posted 06 December 2023

184

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Organic Chemistry

Working Paper

Inner-bond-cleavage approach to figure-eight macrocycles from planar aromatic hydrocarbons

Reiji Yoshina, Junichiro Hirano, Emiko Nishimoto, Yuki Sakamoto, Keita Tajima, Shunsuke Minabe, Muhammet Uyanik, Kazuaki Ishihara, Tomoyuki Ikai, Eiji Yashima, Takuya Omine, Fumitaka Ishiwari, Akinori Saeki, Jinseok Kim, Juwon Oh, Dongho Kim, Guanting Liu, Takuma Yasuda, Hiroshi Shinokubo, Norihito Fukui

Version 1 posted 08 May 2024

736

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Polymer Science

Working Paper

Defect-Free Synthesis of a Fully π-Conjugated Helical Ladder Polymer and Resolution into a Pair of Enantiomeric Helical Ladders

Tomoyuki Ikai, Sayaka Miyoshi, Kosuke Oki, Ranajit Saha, Yuh Hijikata, Eiji Yashima

Version 1 posted 08 February 2023

248

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Organic Chemistry

Working Paper

Stereospecific Synthesis of Enantiopure [6]Helicene Containing a Seven-Membered Ring and [7]Helicene via Acid-Promoted Stepwise Alkyne Annulations of Doubly Axial-Chiral Precursors

Tomoyuki Ikai, Kosuke Oki, Shoya Yamakawa, Eiji Yashima

Version 2 posted 06 February 2023

655

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Polymer Science

Working Paper

Tightly-Twisted One-Handed Helical Tubular Ladder Polymers with π-Electron-Rich Cylindrical Helical Cavities for Chromatographic Enantioseparation

Wei Zheng, Kosuke Oki, Ranajit Saha, Yuh Hijikata, Eiji Yashima, Tomoyuki Ikai

Version 1 posted 12 December 2022

201

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Organic Chemistry

Working Paper

One-Step Simultaneous Synthesis of Circularly Polarized Luminescent Multiple Helicenes Using a Chrysene Framework

Tomoyuki Ikai, Shoya Yamakawa, Nozomu Suzuki, Eiji Yashima

Version 1 posted 24 December 2020

386

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Polymer Science

Working Paper

Chiral and Achiral Pendant-Bound Poly(biphenylylacetylene)s Bearing Amide and/or Carbamate Groups: One-Handed Helix Formations and Chiral Recognition Abilities

Tomoyuki Ikai, Shogo Okuda, Motoki Aizawa, Eiji Yashima

Version 1 posted 01 July 2022

199

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Organic Chemistry

Working Paper

Inner-Bond Cleavage in Nanographenes: A Constructive Destruction Strategy for Facile Access to Molecules with Multiple Figure-Eight Structures

Yuki Sakamoto, Junichiro Hirano, Emiko Nishimoto, Daisuke Owase, Ren Takayanagi, Keita Tajima, Takuya Omine, Fumitaka Ishiwari, Akinori Saeki, Jinseok Kim, Juwon Oh, Dongho Kim, Tomoyuki Ikai, Eiji Yashima, Hiroshi Shinokubo, Norihito Fukui

Version 2 posted 15 May 2023

1,511

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9 results in Eiji Yashima in Authors: Eiji Yashima

Synthesis of Single-Handed Helical Spiro-Conjugated Ladder Polymers through Quantitative and Chemoselective Cyclizations

2,2´-Tethered Binaphthyl-Embedded One-Handed Helical Ladder Polymers: Impact of the Tether Length on Helical Geometry and Chiroptical Property

Inner-bond-cleavage approach to figure-eight macrocycles from planar aromatic hydrocarbons

Defect-Free Synthesis of a Fully π-Conjugated Helical Ladder Polymer and Resolution into a Pair of Enantiomeric Helical Ladders

Stereospecific Synthesis of Enantiopure [6]Helicene Containing a Seven-Membered Ring and [7]Helicene via Acid-Promoted Stepwise Alkyne Annulations of Doubly Axial-Chiral Precursors

Tightly-Twisted One-Handed Helical Tubular Ladder Polymers with π-Electron-Rich Cylindrical Helical Cavities for Chromatographic Enantioseparation

One-Step Simultaneous Synthesis of Circularly Polarized Luminescent Multiple Helicenes Using a Chrysene Framework

Chiral and Achiral Pendant-Bound Poly(biphenylylacetylene)s Bearing Amide and/or Carbamate Groups: One-Handed Helix Formations and Chiral Recognition Abilities

Inner-Bond Cleavage in Nanographenes: A Constructive Destruction Strategy for Facile Access to Molecules with Multiple Figure-Eight Structures

9 results in Authors: Eiji Yashima