Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Kotaro Tateno"'
Publikováno v:
Chemistry – A European Journal. 25:15765-15771
Helical structures were constructed by using π-spacer-bridged dimers of dibenzopyrrolo[1,2-a][1,8]naphthyridine, which has a highly fluorescent L-shaped π-extended skeleton. Three dimers with biphenylene (dimer 1), phenanthrene (dimer 2), and m-phe
Publikováno v:
ChemPlusChem. 86(10)
For the construction of helical foldamers composed of π-frameworks, the choice of appropriate π-π stacking units and π-spacers connecting them is important. The transfer of helicity between the minimal helix structural units is also an essential
Publikováno v:
Chemistry – A European Journal. 25
Autor:
Jumpei Horiuchi, Hiroshi Nagase, Hidetoshi Kawai, Kotaro Tateno, Naoshi Yamamoto, Yasuyuki Nagumo, Noriki Kutsumura, Tsuyoshi Saitoh, Ryuichiro Ohshita
Publikováno v:
Tetrahedron. 73(34):5214-5219
The synthesis of novel adamantane-like cage compounds consisting of phosphorus, sulfur, and carbon atoms was developed. We examined the reaction of a variety of acetophenone derivatives with P4S10 in refluxing benzene. A novel noradamantane-like cage
Autor:
Hidetoshi Kawai, Satoshi Someya, Kyalo Stephen Kanyiva, Taiki Iwachi, Takanori Shibata, Takao Saito, Kotaro Tateno, Takashi Otani, Ami Tsuyuki
Publikováno v:
Angewandte Chemie. 129:3964-3968
A facile two-step synthesis of aza[7]helicenes possessing a 6-5-6-6-6-5-6 skeleton from commercially available 2,9-dichloro-1,10-phenanthroline via double amination with aniline derivatives followed by hypervalent iodine reagent-mediated intramolecul
Autor:
Kotaro Tateno, Takao Saito, Yasuaki Koyama, Naoshi Yamamoto, Hiroshi Nagase, Noriki Kutsumura
Publikováno v:
CHEMICAL & PHARMACEUTICAL BULLETIN. 64:1364-1369
The ZnCl2-promoted intramolecular hetero-Diels-Alder reaction of N-(ortho-propargylphenyl)-N'-arylcarbodiimides, in which the aryl-N=C moiety functioned as a 2-azabuta-1,3-diene, 4π component, has been achieved. By this method, very rare 5,12-dihydr
Autor:
Hidetoshi Kawai, Noriki Kutsumura, Ryota Sakamoto, Takao Saito, Kotaro Tateno, Rie Ogawa, Mizuho Tsuchiya, Kosuke Ono, Takashi Otani
Publikováno v:
The Journal of organic chemistry. 83(2)
The L-shaped, π-extended pentacycle dibenzopyrrolo[1,2-a][1,8]naphthyridine and its derivatives were synthesized using two methods: fully intramolecular [2 + 2 + 2] cycloaddition and oxidative aromatization using substituted carbodiimide and modific
Publikováno v:
Chemical Communications. 51:7895-7898
Brønsted acid-promoted intramolecular hydroarylation of alkynylbenzenes carrying an arylalkyl group at the ortho-position leads to alkylidenedibenzo[a,d]cycloheptenes, -octenes and -nonenes in up to quantitative yield with complete regioselectivity.
Autor:
Noriki, Kutsumura, Yasuaki, Koyama, Kotaro, Tateno, Naoshi, Yamamoto, Hiroshi, Nagase, Takao, Saito
Publikováno v:
Chemicalpharmaceutical bulletin. 64(9)
The ZnCl2-promoted intramolecular hetero-Diels-Alder reaction of N-(ortho-propargylphenyl)-N'-arylcarbodiimides, in which the aryl-N=C moiety functioned as a 2-azabuta-1,3-diene, 4π component, has been achieved. By this method, very rare 5,12-dihydr
Publikováno v:
Organic letters. 16(12)
Acid-responsive fluorescent compounds were prepared by introducing a nitrophenyl group to L-shaped pentacycles with a pyrrolo[1,2-a][1,8]naphthylidine backbone. These compounds show almost no fluorescence under neutral conditions, but emit green to o