Papers - SEKIGUCHI RYUTA
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Synthesis of azuleno[2,1-b]thiophenes by cycloaddition of azulenylalkynes with elemental sulfur and their structural, optical and electrochemical properties
Shoji Taku, Miura Kota, Ohta Akira, Sekiguchi Ryuta, Ito Shunji, Endo Yuya, Nagahata Tatsuki, Mori Shigeki, Okujima Tetsuo
ORGANIC CHEMISTRY FRONTIERS 6 ( 15 ) 2801 - 2811 2019.8
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Preparation of a large-sized highly flexible carbon nanohoop
Nakagawa Yuta, Sekiguchi Ryuta, Kawakami Jun, Ito Shunji
ORGANIC & BIOMOLECULAR CHEMISTRY 17 ( 28 ) 6843 - 6853 2019.7
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Synthesis of 6-Amino- and 6-Arylazoazulenes via Nucleophilic Aromatic Substitution and Their Reactivity and Properties
Shoji Taku, Sugiyama Shuhei, Takeuchi Mutsumi, Ohta Akira, Sekiguchi Ryuta, Ito Shunji, Yatsu Tomoaki, Okujima Tetsuo, Yasunami Masafumi
JOURNAL OF ORGANIC CHEMISTRY 84 ( 3 ) 1257 - 1275 2019.2
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Synthesis of azulenophthalimides by phosphine-mediated annulation of 1,2-diformylazulenes with maleimides
Shoji Taku, Araki Takanori, Iida Nanami, Miura Kota, Ohta Akira, Sekiguchi Ryuta, Ito Shunji, Okujima Tetsuo
ORGANIC CHEMISTRY FRONTIERS 6 ( 2 ) 195 - 204 2019.1
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Synthesis and photophysical properties of azuleno[1 ',2 ':4,5]pyrrolo[2,1-b]quinazoline-6,14-diones: Azulene analogs of tryptanthrin
Kogawa Chieko, Fujiwara Asuka, Sekiguchi Ryuta, Shoji Taku, Kawakami Jun, Okazaki Masaaki, Ito Shunji
TETRAHEDRON 74 ( 49 ) 7018 - 7029 2018.12
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SYNTHESIS OF 2-AMINO-1-CYANOAZULENES: SUBSTITUENT EFFECT ON 2H-CYCLOHEPTA[b]FURAN-2-ONES TOWARD THE REACTION WITH MALONONITRILE
Shoji Taku, Sugiyama Shuhei, Miura Kota, Ohta Akira, Sekiguchi Ryuta, Ito Shunji, Mori Shigeki, Okujima Tetsuo
HETEROCYCLES 97 ( 2 ) 1068 - 1081 2018.9
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Synthesis of 2-Methyl-1-azulenyl Tetracyanobutadienes and Dicyanoquinodimethanes: Substituent Effect of 2-Methyl Moiety on the Azulene Ring toward the Optical and Electrochemical Properties
Shoji Taku, Miura Kota, Araki Takanori, Maruyama Akifumi, Ohta Akira, Sekiguchi Ryuta, Ito Shunji, Okujima Tetsuo
JOURNAL OF ORGANIC CHEMISTRY 83 ( 12 ) 6690 - 6705 2018.6
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Molecular Transformation of 2-Methylazulenes: An Efficient and Practical Synthesis of 2-Formyl- and 2-Ethynylazulenes
Shoji Taku, Araki Takanori, Iida Nanami, Kobayashi Yoshiaki, Ohta Akira, Sekiguchi Ryuta, Ito Shunji, Mori Shigeki, Okujima Tetsuo, Yasunami Masafumi
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY 2018 ( 9 ) 1145 - 1157 2018.3
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Synthesis of azulene-substituted benzofurans and isocoumarins via intramolecular cyclization of 1-ethynylazulenes, and their structural and optical properties
Shoji Taku, Tanaka Miwa, Takagaki Sho, Miura Kota, Ohta Akira, Sekiguchi Ryuta, Ito Shunji, Moric Shigeki, Okujima Tetsuo
ORGANIC & BIOMOLECULAR CHEMISTRY 16 ( 3 ) 480 - 489 2018.1
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Cyanine-cyanine hybrid structure as a stabilized polyelectrochromic system: synthesis, stabilities, and redox behavior of di(1-azulenyl)methylium units connected with electron-accepting pi-electron systems
Ito Shunji, Sekiguchi Ryuta, Mizushima Akira, Kudo Kohei, Kawakami Jun, Shoji Taku
ARKIVOC 145 - 169 2018
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SYNTHESIS OF AZULENE-SUBSTITUTED TETRAARYLPYRROLES BY REACTION OF 1-AZULENYL KETONES WITH BENZOIN AND AMMONIUM ACETATE
Shoji Taku, Takagaki Sho, Tanaka Miwa, Araki Takanori, Sugiyama Shuhei, Sekiguchi Ryuta, Ohta Akira, Ito Shunji, Okujima Tetsuo
HETEROCYCLES 94 ( 10 ) 1870 - 1883 2017.10
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Synthesis of 2-amino- and 2-arylazoazulenes via nucleophilic aromatic substitution of 2-chloroazulenes with amines and arylhydrazines
Shoji Taku, Sugiyama Shuhei, Araki Takanori, Ohta Akira, Sekiguchi Ryuta, Ito Shunji, Mori Shigeki, Okujima Tetsuo, Yasunami Masafumi
ORGANIC & BIOMOLECULAR CHEMISTRY 15 ( 18 ) 3917 - 3923 2017.5
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Synthesis of 2-Aminofurans by Sequential [2+2] Cycloaddition-Nucleophilic Addition of 2-Propyn-1-ols with Tetracyanoethylene and Amine-Induced Transformation into 6-Aminopentafulvenes
Shoji Taku, Nagai Daichi, Tanaka Miwa, Araki Takanori, Ohta Akira, Sekiguchi Ryuta, Ito Shunji, Mori Shigeki, Okujima Tetsuo
CHEMISTRY-A EUROPEAN JOURNAL 23 ( 21 ) 5126 - 5136 2017.4
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Synthesis of 2-Azulenyltetrathiafulvalenes by Palladium-Catalyzed Direct Arylation of 2-Chloroazulenes with Tetrathiafulvalene and Their Optical and Electrochemical Properties
Shoji Taku, Araki Takanori, Sugiyama Shuhei, Ohta Akira, Sekiguchi Ryuta, Ito Shunji, Okujima Tetsuo, Toyota Kozo
JOURNAL OF ORGANIC CHEMISTRY 82 ( 3 ) 1657 - 1665 2017.2
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SYNTHESIS AND ELECTROCHEMICAL PROPERTIES OF AZULENE-SUBSTITUTED TETRACYANOBUTADIENE AND DICYANOQUINODIMETHANE CHROMOPHORES CONNECTED WITH NAPHTHALENE CORES
Shoji Taku, Maruyama Mitsuhisa, Maruyama Akifumi, Nagai Daichi, Tanaka Miwa, Sekiguchi Ryuta, Ito Shunji, Okujima Tetsuo
HETEROCYCLES 95 ( 1 ) 353 - 369 2017.1
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Synthesis of 1,2 '-Biazulenes by Palladium-Catalyzed Unusual Homocoupling Reaction of 1-Haloazulenes in the Presence of Ferrocene
Shoji Taku, Miyashita Kanami, Araki Takanori, Tanaka Miwa, Maruyama Akifumi, Sekiguchi Ryuta, Ito Shunji, Okujima Tetsuo
SYNTHESIS-STUTTGART 48 ( 15 ) 2438 - 2448 2016.8
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Preparation of a Cyclic Polyphenylene Array for a Chiral-Type Carbon Nanotube Segment
Sekiguchi Ryuta, Kudo Shun, Kawakami Jun, Sakai Atsushi, Ikeda Hiroshi, Nakamura Hiromu, Ohta Kazuchika, Ito Shunji
Bulletin of the Chemical Society of Japan 89 ( 10 ) 1260 - 1275 2016
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Synthesis of 1-azulenyl ketones by Bronsted acid mediated hydration of 1-azulenylalkynes
Shoji Taku, Tanaka Miwa, Araki Takanori, Takagaki Sho, Sekiguchi Ryuta, Ito Shunji
RSC ADVANCES 6 ( 82 ) 78303 - 78306 2016
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Preparation of a Cyclic Polyphenylene Array for a Zigzag-Type Carbon Nanotube Segment
Sekiguchi Ryuta, Takahashi Kei, Kawakami Jun, Sakai Atsushi, Ikeda Hiroshi, Ishikawa Aya, Ohta Kazuchika, Ito Shunji
JOURNAL OF ORGANIC CHEMISTRY 80 ( 10 ) 5092 - 5110 2015.5
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Synthesis and redox behavior of 1,2-dihydro-1-oxabenz[a]azulen-2-ones
Ito Shunji, Yamazaki Shohei, Kudo Shun, Sekiguchi Ryuta, Kawakami Jun, Takahashi Masayuki, Matsuhashi Takashi, Toyota Kozo, Morita Noboru
TETRAHEDRON 70 ( 17 ) 2796 - 2803 2014.4