Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Tokiji Kawamura"'
Autor:
Naoki Toshima, Tokiji Kawamura, Hiroaki Shirai, Yukihide Shiraishi, Hisashi Mihori, Hidefumi Hirai
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 139:149-158
The selective synthesis of 2,6-naphthalenedicarboxylic acid from 2-naphthalenecarboxylic acid with carbon tetrachloride, copper powder, and aqueous alkali was achieved by using of β-cyclodextrin (β-CyD) as a catalyst at 60°C under nitrogen, produc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e14d862ee8b25d58d410df25512b85b4
https://doi.org/10.1016/s1381-1169(98)00203-9
https://doi.org/10.1016/s1381-1169(98)00203-9
Autor:
Tokiji Kawamura, Shin-ichi Kojima, Naoki Toshima, Hidefumi Hirai, Harunobu Ohsuka, Hirofumi Tomita, Yukihide Shiraishi
Publikováno v:
Polymer Journal. 28:619-626
The selective synthesis of terephthalic acid from benzoic acid with carbon tetrachloride, copper powder, and aqueous alkali was achieved by the use of β-cyclodextrin (β-CyD) as a mediator at 60°C under nitrogen of atmospheric pressure, producing t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae3bdf2c649e7c63d23da7d3b50762fb
https://doi.org/10.1295/polymj.28.619
https://doi.org/10.1295/polymj.28.619
Publikováno v:
Polymer Journal. 28:91-94
The conformations of β-cyclodextrin (β-CyD)-benzoate and β-CyD-biphenylcarboxylate inclusion complexes have been determined by 1 H ROESY NMR spectrometry.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7445e23f743b73953ed8b31171e27524
https://doi.org/10.1295/polymj.28.91
https://doi.org/10.1295/polymj.28.91
Publikováno v:
Macromolecular Chemistry and Physics. 196:3415-3424
13 C NMR spectra of poly(methyl acrylate) (PMA), poly(ethyl acrylate) (PEA), poly(isopropyl acrylate) (PIPA), poly(butyl acrylate) (PBA), and poly(isobutyl acrylate) (PIBA) with various tacticities were determined. It was found that methine carbon re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85b10704535775013266cabc1082554f
https://doi.org/10.1002/macp.1995.021961026
https://doi.org/10.1002/macp.1995.021961026
Publikováno v:
Polymer Journal. 27:1064-1067
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e9e6667dec3300767fc823fefe94a82
https://doi.org/10.1295/polymj.27.1064
https://doi.org/10.1295/polymj.27.1064
Publikováno v:
Macromolecular Chemistry and Physics. 195:3343-3346
13C Nuclear magnetic resonance (NMR) spectra of atactic and syndiotactic-rich poly(methacrylonitrile) (PMAN) were determined. In addition, 2D (1H-13C COSY)1 NMR spectra of α-methyl and methylene regions of atactic PMAN were measured. Values of tetra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aada556c7c241f711aa0ae57f49e2029
https://doi.org/10.1002/macp.1994.021951005
https://doi.org/10.1002/macp.1994.021951005
Publikováno v:
Macromolecular Rapid Communications. 15:757-764
The methylene and methoxymethyl carbon absorptions of finely resolved 13 C NMR spectra of poly(methyl vinyl ether) were assigned in terms of hexad (partly by tetrad) and pentad sequences, respectively
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc8d118b3e2878fb99de3edd0869dabd
https://doi.org/10.1002/marc.1994.030151002
https://doi.org/10.1002/marc.1994.030151002
Publikováno v:
Macromolecular Chemistry and Physics. 195:2677-2681
The 13 C methylene carbon absorptions of poly(methyl methacrylate) with a random structure were assigned in terms of tetrad sequences using the 2D COSY ( 1 H- 13 C) NMR spectrum and by comparison with the absorptions of isotactic-rich and syndiotacti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d4aaff930f1a5af6ba1b20510454970
https://doi.org/10.1002/macp.1994.021950734
https://doi.org/10.1002/macp.1994.021950734
Publikováno v:
Macromolecular Rapid Communications. 15:479-486
13 C NMR spectra of polystyrene dissolved in o-dichlorobenzene at 150°C are clearly resolved and can be analyzed in terms of pentads and hexads. It is shown that the triad values in samples of polystyrene obtained from the C-1 part of the spectrum o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a77b6f75537f6f326e70d8d5d1cd4aa
https://doi.org/10.1002/marc.1994.030150606
https://doi.org/10.1002/marc.1994.030150606
Publikováno v:
KOBUNSHI RONBUNSHU. 51:379-386
スペクトル情報から物質の同定を行う作業を計算機で支援する試みの一つとして棒スペクトルに着目し, 高分子の炭素13核のNMRスペクトルを例として取り上げ, この知識ベース (KB) 化を試
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ca388f48e19f977e40dcabc3c3c9ef6
https://doi.org/10.1295/koron.51.379
https://doi.org/10.1295/koron.51.379