Papers - ITO SHUNJI
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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
T. Shoji, K. Miura, A. Ohta, R. Sekiguchi, S. Ito, Y. Endo, T. Nagahata, S. Mori, and T. Okujima
Org. Chem. Front. 6 ( 15 ) 2801 - 2811 2019.8
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Aggregation-induced Emission Properties of 2-(N,N-diphenylamino)tryptanthrin
J. Kawakami, M. Harada, and S. Ito
Transactions of the Materials Research Society of Japan (Trans. Mat. Res. Soc. Japan) 44 ( 4 ) 153 - 156 2019.8
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Preparation of a Large-sized Highly Flexible Carbon Nanohoop
Y. Nakagawa, R. Sekiguchi, J. Kawakami, and S. Ito
Org. Biomol. Chem. 17 ( 28 ) 6843 - 6853 2019.7
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Benzo-fused BODIPY Derivative as a Fluorescent Chemosensor for Fe3+, Cu2+, and Al3+
J. Kawakami, Y. Sasaki, K. Yanase, and S. Ito
Transactions of the Materials Research Society of Japan (Trans. Mat. Res. Soc. Japan) 44 ( 2 ) 69 - 73 2019.4
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Synthesis of 6‑Amino- and 6‑Arylazoazulenes via Nucleophilic Aromatic Substitution and Their Reactivity and Properties
T. Shoji, S. Sugiyama, M. Takeuchi, A. Ohta, R. Sekiguchi, S. Ito, T. Yatsu, T. Okujima, and M. Yasunami
J. Org. Chem. 84 ( 3 ) 1257 - 1275 2019.2
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Synthesis of Azulenophthalimides by Phosphinemediated Annulation of 1,2-Diformylazulenes with Maleimides
T. Shoji, T. Araki, N. Iida, K. Miura, A. Ohta, R. Sekiguchi, S. Ito, and T. Okujima
Org. Chem. Front. 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
C. Kogawa, A. Fujiwara, R. Sekiguchi, T. Shoji, J. Kawakami, M. Okazaki, and S. Ito
Tetrahedron 74 ( 49 ) 7018 - 7029 2018.12
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Fluorescence Emission Mechanism of Three N,N-dimethylaminotryptanthrins by Density Functional Theory Calculations
J. Kawakami, C. Osanai, and S. Ito
Transactions of the Materials Research Society of Japan (Trans. Mat. Res. Soc. Japan) 43 ( 5 ) 319 - 323 2018.9
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Synthesis of 2-Methyl-1-azulenyl Tetracyanobutadienes and Dicyanoquinodimethanes: Substituent Effect of 2-Methyl Moiety on Azulene Ring toward the Optical and Electrochemical Properties
T. Shoji, K. Miura, T. Araki, A. Maruyama, A. Ohta, R. Sekiguchi, S. Ito, and T. Okujima
J. Org. Chem. 83 ( 12 ) 6690 - 6705 2018.6
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2-Hydroxy-1-((2-(pyridin-2-yl)hydrazono)methyl)tryptanthrin as a Fluorescent Chemosensor for Metal Ions
J. Kawakami, M. Sasagawa, and S. Ito
Transactions of the Materials Research Society of Japan (Trans. Mat. Res. Soc. Japan) 43 ( 3 ) 209 - 212 2018.6
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Synthesis of 2-Amino-1-cyanoazulenes: Substituent Effect on 2H-Cyclohepta[b]furan-2-ones toward the Reaction with Malononitrile
T. Shoji, S. Sugiyama, K. Miura, A. Ohta, R. Sekiguchi, S. Ito, S. Mori, and T. Okujima
Heterocycles 97 ( 2 ) 1068 - 1081 2018.4
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2-Hydroxytryptanthrin and 1-Formyl-2-hydroxytryptanthrin as Fluorescent Metal-ion Sensors and Near-infrared Fluorescent Labeling Reagents
J. Kawakami, Y. Kinami, M. Takahashi, and S. Ito
Transactions of the Materials Research Society of Japan (Trans. Mat. Res. Soc. Japan) 43 ( 2 ) 109 - 112 2018.4
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Molecular Transformation of 2-Methylazulenes: An Efficient and Practical Synthesis of 2-Formyl- and 2-Ethynylazulenes
T. Shoji, T. Araki, N. Iida, Y. Kobayashi, A. Ohta, R. Sekiguchi, S. Ito, S. Mori, T. Okujima, and M. Yasunami
Eur. J. Org. Chem. ( 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
T. Shoji, M. Tanaka, S. Takagaki, K. Miura, A. Ohta, R. Sekiguchi, S. Ito, S. Mori, and T. Okujima
Org. Biomol. Chem. 15 ( 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 π-electron systems
S. Ito, R. Sekiguchi, A. Mizushima, K. Kudo, J. Kawakami, and T. Shoji
Arkivoc ( part ii ) 145 - 169 2017.11
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Synthesis of Azulene-substituted Tetraarylpyrroles by Reaction of 1-Azulenyl Ketones with Benzoin and Ammonium Acetate
T. Shoji, S. Takagaki, M. Tanaka, T. Araki, S. Sugiyama, R. Sekiguchi, A. Ohta, S. Ito, and T. Okujima
Heterocycles 94 ( 18 ) 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
T. Shoji, S. Sugiyama, T. Araki, A. Ohta, R. Sekiguchi, S. Ito, S. Mori, T. Okujima, and M. Yasunami
Org. Biomol. Chem. 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 to 6-Aminopentafulvenes
T. Shoji, D. Nagai, M. Tanaka, T. Araki, A. Ohta, R. Sekiguchi, S. Ito, S. Mori, and T. Okujima
Chem. Eur. J. 23 ( 21 ) 5126 - 5136 2017.4
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Synthesis of Azulene-substituted Benzofurans and Isocoumarins via Intramolecular Cyclization of 1-Ethynylazulenes
T. Shoji, M. Tanaka, S. Takagaki, K. Miura, A. Ohta, R. Sekiguchi, S. Ito, S. Mori, and T. Okujima
Org. Biomol. Chem. 15 ( 18 ) 3917 - 3923 2017.4
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Synthesis and Electrochemical Properties of Azulene-substituted Tetracyanobutadiene and Dicyanoquinodimethane Chromophores Connected with Naphthalene Cores
T. Shoji, M. Maruyama, A. Maruyama, D. Nagai, M. Tanaka, R. Sekiguchi, S. Ito, and T. Okujima
Heterocycles 95 ( 1 ) 353 - 369 2017.4