T
Takashi Otani
Researcher at Tokyo University of Science
Publications - 38
Citations - 717
Takashi Otani is an academic researcher from Tokyo University of Science. The author has contributed to research in topics: Diene & Diels–Alder reaction. The author has an hindex of 13, co-authored 38 publications receiving 581 citations. Previous affiliations of Takashi Otani include University of Tokyo & Waseda University.
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Journal ArticleDOI
Facile Two-Step Synthesis of 1,10-Phenanthroline-Derived Polyaza[7]helicenes with High Fluorescence and CPL Efficiency
Takashi Otani,Ami Tsuyuki,Taiki Iwachi,Satoshi Someya,Kotaro Tateno,Hidetoshi Kawai,Takao Saito,Kyalo Stephen Kanyiva,Takanori Shibata +8 more
TL;DR: A facile two-step synthesis of aza[7]helicenes possessing a 6,9-dichloro-1,10-phenanthroline via double amination with aniline derivatives followed by hypervalent iodine reagent-mediated intramolecular double-NH/CH couplings was developed.
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Synthesis and Structures of a Series of Bulky “Rind-Br” Based on a Rigid Fused-Ring s-Hydrindacene Skeleton
Tsukasa Matsuo,Katsunori Suzuki,Tomohide Fukawa,Baolin Li,Mikinao Ito,Yoshiaki Shoji,Takashi Otani,Liangchun Li,Megumi Kobayashi,Makoto Hachiya,Yoshiyuki Tahara,Daisuke Hashizume,Takeo Fukunaga,Aiko Fukazawa,Yongming Li,Hayato Tsuji,Kohei Tamao +16 more
TL;DR: A series of octa-R-substituted bromo-s-hydrindacenes, Rind-Br, have been synthesized by a sequence of the Lewis acid catalyzed intramolecular Friedel-Crafts reaction, bromination and vice versa as discussed by the authors.
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RERJ1, a jasmonic acid-responsive gene from rice, encodes a basic helix-loop-helix protein.
Kyoko Kiribuchi,Miho Sugimori,Masayoshi Takeda,Takashi Otani,Kazunori Okada,Haruko Onodera,Masashi Ugaki,Yuji Tanaka,Chiharu Tomiyama-Akimoto,Takeshi Yamaguchi,Eiichi Minami,Naoto Shibuya,Toshio Omori,Makoto Nishiyama,Hideaki Nojiri,Hisakazu Yamane +15 more
TL;DR: The phenotypes of transgenic rice plants overexpressing sense or antisense RerJ1 mRNA demonstrated that RERJ1 is involved in the growth inhibition of rice shoots caused by JA.
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Rh(III)-catalyzed C-H bond activation along with "rollover" for the synthesis of 4-azafluorenes.
TL;DR: Pyridine-directed C-H bond activation along with "rollover" are likely to be key steps of this transformation of 4-azafluorene compounds.
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Acid-Responsive Fluorescent Compounds Based on Nitro-Group-Substituted L-Shaped Pentacycles, Pyrrolo[1,2-a][1,8]naphthylidines
TL;DR: Acid titration experiments and NMR spectroscopy, plus DFT calculations, show that formation of a pyridinium cation species is responsible for the appearance of fluorescence.