Shigeru Yamago

Kyoto Bunkyo University

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Eiichi Kayahara

Kyoto University

120

Jun‐ichi Yoshida

Kyoto University

Eiichi Nakamura

The University of Tokyo

Takahiro Iwamoto

Chuo University

Yasuyuki Nakamura

National Institute for Materials Science

Tatsuhisa Kato

Kyoto University

Hiroshi Miyazoe

Merck & Co., Inc., Rahway, NJ, USA (United States)

Yoshiyuki Mizuhata

Kyoto University

Masatoshi Tosaka

Instituto de Investigaciones Químicas

Norihiro Tokitoh

Kyoto University

Cooperative Institutions

Kyoto University

162

Kyoto University Institute for Chemical Research

Kyoto Bunkyo University

The University of Tokyo

Osaka University

Japan Science and Technology Agency

Tokyo Institute of Technology

Instituto de Investigaciones Químicas

Graduate School USA

Centre National de la Recherche Scientifique

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Higher conductivity in doped ethylenedioxythiophene (EDOT) dimers with chalcogen-substituted end groups

Journal of Materials Chemistry C (2024)

Kota Onozuka Tomoko Fujino Tatsuya Miyamoto T Yamakawa Hiroshi Okamoto

Chalcogen substitution at the end groups of doped EDOT oligomers impacts on the crystal and electronic structures, enhancing their conducting properties.

Chalcogen

Substitution (logic)

10.1039/d4tc02346c

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Synthesis of [8]Cycloparaphenylene from a Square‐Shaped Tetranuclear Platinum Complex

Angewandte Chemie (2009)

Shigeru Yamago Yoshiki Watanabe Takahiro Iwamoto

Vom Quadrat zum Kreis: Die selektive Synthese von [8]Cycloparaphenylen unter milden und neutralen Reaktionsbedingungen gelang in wenigen Stufen und hoher Ausbeute über das quadratförmige Biphenylplatin-Intermediat 1 (siehe Schema). 1 ist das kleinste bisher hergestellte Cycloparaphenylen. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.

Schema (genetic algorithms)

10.1002/ange.200905659

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Citations (178)

Structural Investigation of Cycloparaphenylene-Fullerene Supramolecular Complexes Using Synchrotron Radiation and Theoretical Calculation

Nihon Kessho Gakkaishi (2015)

Takahiro Iwamoto Hikaru Takaya Shigeru Yamago

Cycloparaphenylenes (CPPs), the shortest structural unit of armchair carbon nanotube (CNT), efficiently encapsulate various fullerenes, such as C60, C70, and La@C82, forming the supramolecular complexes, the shortest CNT-fullerene peapods. The structures of the complexes were unambiguously determined and elucidated at a molecular level by single crystal X-ray analysis combined with computational analyses. The results distinctly clarify factors determining the peapod formation, such as importance of van der Waals interaction, elastic character of CPPs, and electronic interaction between CPPs and fullerenes. These findings would increase the understandings of structures and properties of fullerene-peapods and be useful for the rational design of hierarchically ordered π-materials having concave-convex π-π interactions.

10.5940/jcrsj.57.239

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Synthesis of vinylic C-glycosides from telluroglycosides. Addition of photochemically and thermally generated glycosyl radicals to alkynes

Tetrahedron Letters (1999)

Shigeru Yamago Hiroshi Miyazoe Jun‐ichi Yoshida

Tributyltin hydride

Free-radical reaction

10.1016/s0040-4039(99)00182-3

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Citations (42)

Chemical derivatization of organofullerenes through oxidation, reduction, and carbon-oxygen and carbon-carbon bond-forming reactions

The Journal of Organic Chemistry (1993)

Shigeru Yamago Hidetoshi Tokuyama Eiichi Nakamura Maurizio Prato Fred Wudl

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical derivatization of organofullerenes through oxidation, reduction, and carbon-oxygen and carbon-carbon bond-forming reactionsShigeru Yamago, Hidetoshi Tokuyama, Eiichi Nakamura, Maurizio Prato, and Fred WudlCite this: J. Org. Chem. 1993, 58, 18, 4796–4798Publication Date (Print):August 1, 1993Publication History Published online1 May 2002Published inissue 1 August 1993https://doi.org/10.1021/jo00070a009RIGHTS & PERMISSIONSArticle Views256Altmetric-Citations29LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (290 KB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

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Carbon fibers

10.1021/jo00070a009

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Citations (36)

Recent progress in the use of photoirradiation in living radical polymerization

Polymer (2012)

Shigeru Yamago Yasuyuki Nakamura

The effects of photoirradiation in controlled and living radical polymerization (LRP), namely nitroxide-mediated polymerization (NMP), atom-transfer radical polymerization (ATRP), cobalt-mediated radical polymerization (CMRP), reversible addition-fragmentation chain transfer polymerization (RAFT), organoiodine-mediated radical polymerization (IRP), and organotellurium-mediated radical polymerization (TERP), are summarized. As in the conventional radical polymerization, photoirradiation has been used for generating radicals under mild conditions in LRP methods. In addition to this use, photoirradiation is also used to overcome the difficulties characteristic to each method, such as activation of catalysis, generation of controlling agents, and increasing the polymer-end structure. The most-recent developments in the use of photochemistry in LRP are summarized in this review.

Chain transfer

Living free-radical polymerization

Cobalt-mediated radical polymerization

Ionic polymerization

Atom-transfer radical-polymerization

Living polymerization

Chain-growth polymerization

10.1016/j.polymer.2012.11.046

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Citations (166)

Ligand‐Controlled Synthesis of [3]‐ and [4]Cyclo‐9,9‐dimethyl‐2,7‐fluorenes through Triangle‐ and Square‐Shaped Platinum Intermediates

Chemistry - A European Journal (2015)

Eiichi Kayahara Rui Qu Mitsuru Kojima Takahiro Iwamoto Toshiyasu Suzuki

The syntheses of [3]- and [4]cyclo-9,9-dimethyl-2,7-fluorenes ([3] and [4]CFRs), cyclic trimer, and tetramers of 9,9-dimethyl-2,7-fluorene (FR), respectively, were achieved by the platinum-mediated assembly of FR units and subsequent reductive elimination of platinum. A triangle-shaped tris-platinum complex and a square-shaped tetra-platinum complex were obtained by changing the platinum ligand. The structure of the triangle complex was unambiguously determined by X-ray crystallographic analysis. Reductive elimination of each complex gave [3] and [4]CFRs. Two rotamers of [3]CFR were sufficiently stable at room temperature and were separated by chromatography. The physical properties of the CFRs were also investigated theoretically and experimentally.

Trimer

Conformational isomerism

Reductive elimination

10.1002/chem.201504369

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Citations (54)

A Concise Synthetic Route to Cyclopentenes by [3 + 2] Cycloaddition of Dipolar Trimethylenemethane to Alkynes

Angewandte Chemie International Edition (1995)

Shigeru Yamago Satoshi Ejiri Eiichi Nakamura

A purely thermal reaction under neutral conditions, the trimethylene compound 2 is generated in situ from 1 and transformed with an alkyne into the cyclopentene derivatives 3. EWG  CO2Me, CO2iPr.

Trimethylenemethane

Cyclopentene

Alkyne

10.1002/anie.199521541

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Citations (20)

ChemInform Abstract: Synthetic and Theoretical Studies on Group‐Transfer Imidoylation of Organotellurium Compounds. Remarkable Reactivity of Isonitriles in Comparison with Carbon Monoxide in Radical‐Mediated Reactions.

ChemInform (2001)

Shigeru Yamago Hiroshi Miyazoe Ryuta Goto Masahiro Hashidume Takashi Sawazaki

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Reactivity

10.1002/chin.200137166

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CCDC 2080801: Experimental Crystal Structure Determination

The Cambridge Structural Database (2022)

Tomoaki Terabayashi Eiichi Kayahara Yichen Zhang Yoshiyuki Mizuhata Norihiro Tokitoh

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc27v7mz

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