Papers - ITO SHUNJI
-
Isoindigo analog fused by the seven-membered ring of azulene: synthesis of (E)-1,1′,7′-2,2′-tetramesityl-(3,3′-biazuleno[6,5-b]pyrrolylidene)dione with near-infrared absorption properties
I. Uchiyama, R. Sekiguchi, T. Shoji, and S. Ito
Tetrahedron Lett. 179 156012 2026.2
-
, , Molecules, 31, 221 (2026)
31 ( 2 ) 221 2026.1
-
Azulenes exhibiting solid-state fluorescence: synthesis and photophysics of 2-aryl-6 pyrrolidinylazulenes
T. Shoji, S. Mori, Y. Ariga, D. Ito, F. Ito, T. Okujima, A. Hamasaki, R. Sekiguchi, and S. Ito
Chem. Commun. 61 ( 98 ) 19481 - 19484 2025.12
-
Synthesis of naphth[2,1-a]azulenes via [8 + 2] cycloaddition of 2H-cyclohepta[b]furan-2-ones, and their reactivity, optical, and structural properties
T. Shoji, A. Yamazaki, M. Yoshida, M. Yasunami, S. Mori, T. Okujima, T. Kamayachi, I. Uchiyama, R. Sekiguchi, and S. Ito
Org. Biomol. Chem. 23 ( 44 ) 10088 - 10099 2025.11
-
Synthesis and Properties of 10-Aryl-11H-indeno[2,1-a]azulenes and Azuleno[2,1-a]indenones
T. Shoji, D. Ando, M. Iwabuchi, M. Yoshida, S. Mori, T. Okujima, T. Kamayachi, R. Sekiguchi, and S. Ito
Eur. J. Org. Chem. 28 ( 38 ) e202500694 2025.10
-
Synthesis of 11H-Indeno[2,1-a]azulenes and Transformation into Azulene-Fused Dicyanobenzofulvenes
M. Iwabuchi, M. Yoshida, D. Ando, S. Mori, T. Okujima, R. Sekiguchi, S. Ito, M. Yasunami, and T. Shoji
J. Org. Chem. 90 ( 45 ) 15972 - 15996 2025.10
-
Azulene-fused polycyclic aromatic hydrocarbons: synthesis, structural, optical, and electrochemical properties of azuleno[2,1-a]phenalenones
T. Shoji, N. Sakata, R. Ishikawa, S. Mori, T. Okujima, R. Sekiguchi, and S. Ito
Chem. Eur. 3 ( 3 ) e202500039 2025.3
-
Synthesis of 2-Amino-4-arylazulenes from 8-Aryl-2H-cyclohepta[b]furan-2-ones and Transformation into 6-Aryl-7H-naphth[3,2,1-cd]azulen-7-ones
T. Shoji, D. Ando, M. Iwabuchi, A. Hamasaki, S. Mori, T. Okujima, R. Sekiguchi, and S. Ito
J. Org. Chem. 89 ( 22 ) 16375 - 16389 2024.11
-
Synthesis and Properties of 3,8-Diaryl-2H-cyclohepta[b]furan-2-ones
T. Shoji, D. Ando, M. Iwabuchi, T. Okujima, R. Sekiguchi, and S. Ito
Organics 5 ( 3 ) 252 - 262 2024.9
-
Synthesis of 2-Perfluoroalkylazuleno[2,1-d]pyrimidin-4(3H)-ones via Brønsted Acid-Mediated Intramolecular Cyclization and Transformation into Pyrimidines
T. Shoji, Y. Ariga, N. Sakata, D. Ando, S. Mori, T. Okujima, R. Sekiguchi, and S. Ito
Adv. Synth. Catal. 365 ( 21 ) 3648 - 3657 2023.11
-
Synthesis, Structural, and Optical Properties of Azuleno[1,2 c]pyran 1-ones: Bronsted Acid-Mediated Cyclization of 2-Azulenylalkynes
T. Shoji, N. Sasahara, A. Hamasaki, S. Mori, T. Okujima, R. Sekiguchi, and S. Ito
J. Org. Chem. 88 ( 22 ) 15739 - 15749 2023.10
-
Aggregation-induced Emission and Solid-State Fluorescence of 2-(4-(N,N-diphenylamino)phenyl)tryptanthrin
J. Kawakami, M. Harada, Y. Akagi, M. Takahashi, S. Ohta, and S. Ito
Journal of the Japan Society of Colour Material 96 ( 15 ) 333 - 337 2023.10
-
Synthesis of Azuleno[2,1-b]quinolones and Quinolines via Brønsted Acid-Catalyzed Cyclization of 2-Arylaminoazulenes
T. Shoji, M. Takeuchi, M. Uda, Y. Ariga, A. Yamazaki, R. Sekiguchi, and S. Ito
Molecules 28 ( 15 ) 5785 2023.8
-
Synthesis of Maleimide-fused Aceheptylenes from Guaiazulene
T. Shoji, M. Uda, T. Okujima, R. Sekiguchi, and S. Ito
Heterocycles 106 ( 4 ) 641 - 648 2023.4
-
Construction of 2,2’-Biazulene Framework via Brønsted Acid Promoted Annulation of 2,3-Di(1-azulenyl)benzofurans
T. Shoji, N. Sakata, Y. Ariga, A. Yamazaki, R. Katoh, T. Okujima, R. Sekiguchi, and S. Ito
Chem. Commun. 59 ( 23 ) 3447 - 3450 2023.3
-
Bis(3-methylthio-1-azulenyl)phenylmethyl Cations and Dications Connected by a 1,4-Phenylene Spacer: Synthesis and Their Electrochemical Properties
T. Shoji, N. Sakata, R. Sekiguchi, and S. Ito
Organics 3 ( 4 ) 507 - 519 2022.12
-
Benz[a]azulenequinones: Reaction of Benz[a]azulenes with Pyridinium Hydrobromide Perbromide
T. Shoji, A. Yamazaki, N. Sakata, R. Sekiguchi, S. Ito, and M. Yasunami
Molbank 2022 ( 4 ) M1467 2022.12
-
Fluorescence Based on Excited-State Intramolecular Proton Transfer of 1-(2-Benzothiazolyl)-2-hydroxytryptanthrin
J. Kawakami, M. Takahashi, and S. Ito
Journal of the Japan Society of Colour Material 95 ( 7 ) 185 - 188 2022.7
-
Azuleno[6,5-b]indoles: Palladium-Catalyzed Oxidative Ring-Closing Reaction of 6-(Arylamino)azulenes
T. Shoji, Y. Ariga, S. Ito, and M. Yasunami
Heterocycles 105 ( 1 ) 383 - 396 2022.6
-
Synthesis of 8-Aryl-2H-cyclohepta[b]furan-2-ones and Transformation into 4-Arylazulenes
T. Shoji, D. Ando, A. Yamazaki, Y. Ariga, A. Hamasaki, S. Mori, T. Okujima, and S. Ito
Chem. Lett. 51 ( 5 ) 533 - 537 2022.5