研究者詳細 - 忍久保　洋

論文 - 忍久保　洋

分割表示 403 件中 61 - 80 件目／全件表示 >>

Quadruply BN-Fused Tetrathia[8]circulenes with Flexible Frameworks: Synthesis, Structures and Properties 査読有り国際誌

Akahori Shuhei, Sasamori Takahiro, Shinokubo Hiroshi, Miyake Yoshihiro

CHEMISTRY-A EUROPEAN JOURNAL 27 巻 ( 31 ) 頁： 8178 - 8184 2021年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Wiley

Quadruply BN-fused tetrathia[8]circulenes were synthesized through four-fold electrophilic borylation. The single-crystal X-ray diffraction analysis revealed that the BN-fused tetrathia[8]circulene with peripheral phenyl groups exhibits crystal polymorphism, in which the circulene core adopts both planar and saddle conformations in the solid state. The experimental and theoretical studies revealed that the weaker aromaticity of azaborine compared with benzene renders the flexibility of the BN-fused tetrathia[8]circulenes.

DOI： 10.1002/chem.202100454

その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/chem.202100454

Iron hexamesityl-5,15-diazaporphyrin: synthesis, structure and catalytic use for direct oxidation of sp(3) C-H bonds 査読有り国際誌

Nishimura Tsubasa, Sakurai Takahiro, Shinokubo Hiroshi, Miyake Yoshihiro

DALTON TRANSACTIONS 50 巻 ( 18 ) 頁： 6343 - 6348 2021年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Dalton Transactions

Iron hexamesityl-5,15-diazaporphyrin was synthesized through the cross-coupling reaction of tetrabromodiazaporphyrin. The use of chloroiron(iii) hexamesityl-5,15-diazaporphyrin as a catalyst for oxidation of cyclooctane showed high performance with a total TON up to 731. The introduction of bulky mesityl groups at β-positions prevented the catalyst deactivation via formation of a μ-oxo dimer.

DOI： 10.1039/d1dt00893e

Web of Science

Scopus

PubMed

Cationic Nickel(II) Pyridinophane Complexes: Synthesis, Structures and Catalytic Activities for C-H Oxidation 査読有り国際誌

Nishimura Tsubasa, Ando Yuki, Shinokubo Hiroshi, Miyake Yoshihiro

CHEMISTRY LETTERS 50 巻 ( 5 ) 頁： 1049 - 1052 2021年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人日本化学会

<p>A series of nickel(II) pyridinophane complexes were synthesized and characterized by X-ray crystallographic analysis. Their IR spectra supported the existence of mononuclear nickel(II) complexes in solution. Furthermore, we conducted catalytic C–H oxidation of cyclooctane with nickel(II) pyridinophanes as the catalysts. The activity of nickel(II) pyridinophanes was affected by steric hindrance around the nitrogen atoms.</p>

DOI： 10.1246/cl.210074

Web of Science

Scopus

Redox-induced reversible [2+2] cycloaddition of an etheno-fused diporphyrin 査読有り国際誌

Miyagawa Kazuya, Hisaki Ichiro, Fukui Norihito, Shinokubo Hiroshi

CHEMICAL SCIENCE 12 巻 ( 14 ) 頁： 5224 - 5229 2021年4月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Chemical Science

3,5-Ethenoporphyrin is a π-extended porphyrin containing a fused ethene unit between themeso- and β-positions, exhibiting unique contribution of macrocyclic antiaromaticity. We have recently reported that its analogue, etheno-fused diporphyrin, underwent thermal [2 + 2] cycloaddition to furnish X-shaped cyclobutane-linked tetraporphyrins. Here we demonstrate that the cyclobutane-ring formation is dynamically redox-active. Namely, the tetraporphyrin underwent two-step four-electron oxidation to afford two etheno-fused diporphyrin dications. The reduction of the resulting dication regenerated the cyclobutane-linked tetraporphyrin. The dication was sufficiently stable to allow its isolation under ambient conditions. The structure of the dication has been confirmed by1H NMR spectroscopy and X-ray diffraction analysis. Importantly, the simultaneous double C-C bond cleavage in the cyclopropane ring in the tetraporphyrin is exceptional among dynamic redox (dyrex) systems to achieve large structural changes, thus offering new insights for the design of novel redox-active functional organic materials for electrochromic dyes, organic batteries, and organic memories.

DOI： 10.1039/d1sc00438g

Synthesis and Properties of an 18 pi Aromatic Norcorrole P(V) Complex 査読有り国際誌

Yoshida Takuya, Shafie Siham Asyiqin, Kawashima Hiroyuki, Fukui Norihito, Shinokubo Hiroshi

ORGANIC LETTERS 23 巻 ( 7 ) 頁： 2826 - 2830 2021年4月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ACS Publications

[16]Norcorrole is an antiaromatic ring-contracted porphyrinoid. Here, we show that the phosphorus insertion of the free-base [16]norcorrole switches its antiaromaticity to aromaticity. The treatment of a free-base meso-dimesityl[16]norcorrole with phosphorus tribromide in pyridine afforded an [18]norcorrole P(V) complex, which exhibited porphyrin-like absorption and fluorescence spectra. The phosphorus center adopted a distorted tetragonal pyramidal coordination geometry. The distinct aromatic nature of the [18]norcorrole P(V) complex was corroborated both experimentally and theoretically.

DOI： 10.1021/acs.orglett.1c00823

Enthalpically and Entropically Favorable Self-Assembly: Synthesis of C-4h-Symmetric Tetraazatetrathia[8]circulenes by Regioselective Introduction of Pyridine Rings 査読有り

Akahori Shuhei, Sasamori Takahiro, Shinokubo Hiroshi, Miyake Yoshihiro

CHEMISTRY-A EUROPEAN JOURNAL 27 巻頁： 5675 - 5682 2021年3月

Peripherally Arylated 2,8-Diazaperylenes from Anthracene Diimide: Synthesis and Oxidative Annulation 査読有り

Takahiro Sakurai, Takumi Nakazato, Hiroshi Shinokubo, and Yoshihiro Miyake

Organic Letters 23 巻 ( 6 ) 頁： 2099 - 2103 2021年3月

Dinaphtho[1,8-bc:1 ',8 '-fg][1,5]dithiocine Bisimide 招待有り査読有り

Tanaka Yuki, Tajima Keita, Fukui Norihito, Shinokubo Hiroshi

ASIAN JOURNAL OF ORGANIC CHEMISTRY 10 巻 ( 3 ) 頁： 541 - 544 2021年2月

Dual Emission of a Free-Base 5-Oxaporphyrinium Cation from its cis- and trans-NH Tautomers 査読有り国際共著

Takiguchi Asahi, Kang Seongsoo, Fukui Norihito, Kim Dongho, Shinokubo Hiroshi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 60 巻 ( 6 ) 頁： 2915 - 2919 2021年2月

Complexation of 2,7-diazapyrene with boron for structural and electronic tuning 査読有り

Nakazato Takumi, Shinokubo Hiroshi, Miyake Yoshihiro

CHEMICAL COMMUNICATIONS 57 巻 ( 3 ) 頁： 327 - 330 2021年1月

Dual-ion charge-discharge behaviors of Na-NiNc and NiNc-NiNc batteries 査読有り国際誌

Hwang Jinkwang, Hagiwara Rika, Shinokubo Hiroshi, Shin Ji-Young

MATERIALS ADVANCES 2 巻 ( 7 ) 頁： 2263 - 2266 2021年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Materials Advances

Dual-ion sodium-organic secondary batteries were produced with anti-aromatic porphyrinoid, NiNc, as an active electrode material, which exhibited inherent charge-discharge behavior with high discharge capacity, high stability, and high Coulombic efficiency at high current density (132.6 mA h g-1 discharge capacity and 99.4% efficiency at the 100th cycle with 1 A g-1 of current density and 95.3 mA h g-1 discharge capacity and 99.3% efficiency at the 100th cycle with 2 A g-1 of current density).

DOI： 10.1039/D1MA00007A

Web of Science

Scopus

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Hetero[8]circulenes: synthetic progress and intrinsic properties 招待有り査読有り

Miyake Yoshihiro, Shinokubo Hiroshi

CHEMICAL COMMUNICATIONS 56 巻 ( 100 ) 2020年12月

Aggregation-Induced Emission in Tetrathia[8]circulene Octaoxides via Restriction of the Dynamic Motion of their Negatively Curved pi-Frameworks 査読有り

Murase Hiroyasu, Nagata Yuya, Akahori Shuhei, Shinokubo Hiroshi, Miyake Yoshihiro

CHEMISTRY-AN ASIAN JOURNAL 15 巻 ( 22 ) 頁： 3873 - 3877 2020年11月

Site-selective halogenation on meso-mesityl substituents of 10,20-dimesityl-5,15-diazaporphyrins with an AuX3/AgOTf combination 査読有り

Longevial Jean-Francois, Miyagawa Kazuya, Shinokubo Hiroshi

DALTON TRANSACTIONS 49 巻 ( 42 ) 頁： 14786 - 14789 2020年11月

Synthesis and electron-transport properties of a stable antiaromatic Ni-II norcorrole with the smallest meso-substituent 査読有り

Ukai Shusaku, Koo Yun Hee, Fukui Norihito, Seki Shu, Shinokubo Hiroshi

DALTON TRANSACTIONS 49 巻 ( 41 ) 頁： 14383 - 14387 2020年11月

Iron(III) 5,15-Diazaporphyrin Catalysts for the Direct Oxidation of C(sp(3))-H Bonds 査読有り

Nishimura Tsubasa, Ikeue Takahisa, Shoji Osami, Shinokubo Hiroshi, Miyake Yoshihiro

INORGANIC CHEMISTRY 59 巻 ( 21 ) 頁： 15751 - 15756 2020年11月

as-Indaceno[3,2,1,8,7,6-ghijklm]terrylene as a near-infrared absorbing C-70-fragment 査読有り

Tanaka Yuki, Fukui Norihito, Shinokubo Hiroshi

NATURE COMMUNICATIONS 11 巻 ( 1 ) 2020年8月

Dinaphthothiepine Bisimide and Its Sulfoxide: Soluble Precursors for Perylene Bisimide 査読有り

Hayakawa Sakiho, Matsuo Kyohei, Yamada Hiroko, Fukui Norihito, Shinokubo Hiroshi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 142 巻 ( 27 ) 頁： 11663 - 11668 2020年7月

meso-Diazacorrphycenes: Neighboring Effect of Two Nitrogen Atoms 査読有り

Yagi Atsumi, Shinokubo Hiroshi

CHEMISTRY-A EUROPEAN JOURNAL 26 巻 ( 37 ) 頁： 8210 - 8213 2020年7月

A 2-to-2 ' 18-to-18 ' doubly linked Ni(ii) norcorrole dimer: an effectively conjugated antiaromatic dyad 査読有り

Liu Si-Yu, Kawashima Hiroyuki, Fukui Norihito, Shinokubo Hiroshi

CHEMICAL COMMUNICATIONS 56 巻 ( 50 ) 頁： 6846 - 6849 2020年6月

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