Exploring C–C bond formation reactions for expanding azulene derivatives linked at the 2- and/or 6-positions

Pierre Mathey, Israel Fernández and Jean-François Morin

New J. Chem., 2024, 48, 4801
DOI: 10.1039/D4NJ00729H

ortho O-Annulated azabenzannulated perylenediimide and bisazacoronenediimide

Arthur H. G. David, Daryna Shymon, Hayley Melville, Lou-Ann Accou, Adèle Gapin, Magali Allain, Olivier Alévêque, Maximilien Force, Alexis Grosjean, Piétrick Hudhomme, Laura Le Bras and Antoine Goujon

J. Mater. Chem. C, 2023, 11, 14631
DOI: 10.1039/D3TC02376A

Synthesis and resolution of a 1,1′-biazulene analogue of BINOL

Anthony P. Gee, Tiberiu-M. Gianga, Gabriele Kociok-Köhn, G. Dan Pantoş and Simon E. Lewis

RSC Adv., 2025, 15, 14881
DOI: 10.1039/D5RA02520F

Synthesis of Azuleno[2,1-b]quinolones and Quinolines via Brønsted Acid-Catalyzed Cyclization of 2-Arylaminoazulenes

Taku Shoji, Mutsumi Takeuchi, Mayumi Uda, Yukino Ariga, Akari Yamazaki, Ryuta Sekiguchi and Shunji Ito

Molecules, 2023, 28, 5785
DOI: 10.3390/molecules28155785

Recent Progress in the Chemistry of Ring‐Fused Azulenes: Synthesis, Reactivity and Properties

Taku Shoji and Shunji Ito

Chemistry An Asian Journal, 2025, 20
DOI: 10.1002/asia.202500166

AzUlene‐Fused Polycyclic Aromatic Hydrocarbons: Synthesis, Structural, Optical, and Electrochemical Properties of Azuleno[2,1‐a]phenalenones

Taku Shoji, Naoko Sakata, Ryunosuke Ishikawa, Shigeki Mori, Tetsuo Okujima, Ryuta Sekiguchi and Shunji Ito

ChemistryEurope, 2025, 3
DOI: 10.1002/ceur.202500039

Creation of Ring-Fused Azulenes that Show the Unique Optical Properties

Taku Shoji, Ryuta Sekiguchi and Shunji Ito

J. Synth. Org. Chem. Jpn., 2024, 82, 684
DOI: 10.5059/yukigoseikyokaishi.82.684

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

Taku Shoji, Daichi Ando, Masayuki Iwabuchi, Atom Hamasaki, Shigeki Mori, Tetsuo Okujima, Ryuta Sekiguchi and Shunji Ito

J. Org. Chem., 2024, 89, 16375
DOI: 10.1021/acs.joc.4c01394

Synthesis, Structural, and Optical Properties of Azuleno[1,2-c]pyran-1-ones: Bro̷nsted Acid-Mediated Cyclization of 2-Azulenylalkynes

Taku Shoji, Nichika Sasahara, Atom Hamasaki, Shigeki Mori, Tetsuo Okujima, Ryuta Sekiguchi and Shunji Ito

J. Org. Chem., 2023, 88, 15739
DOI: 10.1021/acs.joc.3c01742

Synthesis and Properties of 10‐Aryl‐11H‐indeno[2,1‐a]azulenes and Azuleno[2,1‐a]indenones

Taku Shoji, Daichi Ando, Masayuki Iwabuchi, Miku Yoshida, Shigeki Mori, Tetsuo Okujima, Takumi Kamayachi, Ryuta Sekiguchi and Shunji Ito

Eur J Org Chem, 2025
DOI: 10.1002/ejoc.202500694