Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Tadashi Yonemitsu"'
Autor:
Shin-ichiro Isobe, Tadashi Yonemitsu, Thies Thiemann, Shuntaro Mataka, Tsuyoshi Sawada, Kanji Kubo
Publikováno v:
Bulletin of the Chemical Society of Japan. 75:773-779
Arylhydroxymethano[3]orthocyclo[5](1,8)naphthalenophanes 11, which possess a rigid boat-chair conformation, were prepared by the reaction of 9,10-benzo-3,4,5-[1,8]naphthobicyclo[5.4.1]dodecan-3,9-dien-12-one 8c with aryllithium reagents and treated w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::616b84a9bda1ccdf27878fdf39a1d81b
https://doi.org/10.1246/bcsj.75.773
https://doi.org/10.1246/bcsj.75.773
Publikováno v:
Bulletin of the Chemical Society of Japan. 74:667-672
Acidity constants ( K a ) of perfluoroalkanoic acids were determined by pH titration and by electric conductivity for shorter alkanoic acids (C1 to C5) with 1 to 5 carbon atoms in the alkyl chain. The acidity constants obtained by the two methods are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5715cd0e47bd31c269aff66265a61edb
https://doi.org/10.1246/bcsj.74.667
https://doi.org/10.1246/bcsj.74.667
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 167:239-249
High purity synthesis of ω-ferrocenylalkanethiols (Fc(CH2)n−SH, n=6, 8, 11) was developed for their use in self-assembled monolayers on gold surface. The method employs a separation and purification of isothiuronium salt 6 to improve the purity of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d381941c4bd06002b84cc9a0aa34529
https://doi.org/10.1080/10426500008082402
https://doi.org/10.1080/10426500008082402
Autor:
Kichinosuke Kamata, kuniharu Takahashi, Akira Kitamura, Masashi Tashiro, Gouki Fukata, Akiyoshi Torii, Tadashi Yonemitsu, Shuntaro Mataka
Publikováno v:
food preservation science. 25:105-110
The entire series of 9-straight chain alkylated acridine derivatives which are acridine (1, C0) -9-n-octiylacridine (9, C8) except C0 were synthesized and C0 was purchased. The relationship between the number of carbon chains on 9-straight chain alky
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::751186a0345558af8a6677f671b2ac82
https://doi.org/10.5891/jafps.25.105
https://doi.org/10.5891/jafps.25.105
Autor:
Masahiko Taniguchi, Shin-ichiro Isobe, Shuntaro Mataka, Thies Thiemann, Tsuyoshi Sawada, Tadashi Yonemitsu
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :2101-2108
Novel rearrangement of intermediate carbocations generated from rigid, layered [3.3]orthocyclophane-alcohols 4 are presented. The bicyclo[4.4.1]undecane framework of 4 rearranges to either bicyclo[5.4.0]- 5 and/or bicyclo[4.4.0]- 6 or tricyclo[5.4.0.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bca23dc08b249f8a289869f7b864179
https://doi.org/10.1039/a903156a
https://doi.org/10.1039/a903156a
Autor:
Takehito Tsukinoki, Masashi Tashiro, Yoshiaki Nagano, Tadashi Yonemitsu, M. Mukumoto, Hirohisa Tsuzuki, Shuntaro Mataka
Publikováno v:
Journal of Labelled Compounds and Radiopharmaceuticals. 34:1087-1090
[2H13]Heptanoic acid was synthesized as its methyl ester (4) (deuterium content: 96%) with Ni-Al alloy in 10% NaOD-D2O via the desulfurization of methyl 3-chloro-5,6-dibromothieno[3,2,b]thiophene-2-carboxylate (3), which was derived from 4,5-dibromot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::820c89eba8b5a8f017f27e95700f6669
https://doi.org/10.1002/jlcr.2580341112
https://doi.org/10.1002/jlcr.2580341112
Autor:
Katsuhiko Kamio, Hirohisa Tsuzuki, Hideki Fujimoto, Keisuke Mimura, Susumu Matsumoto, Tadashi Yonemitsu, Shuntaro Mataka, Masashi Tashiro, Takehito Tsukinoki
Publikováno v:
Journal of Labelled Compounds and Radiopharmaceuticals. 33:205-212
The synthesis of [4,5,6,8-2H4][2.2]metacyclophane (8) was achieved starting with 2,4,5,6-tetrafluoroisophthalic acid in eight steps in 2% total yield. 1H{2H} and 13C{1H} NMR spectra of 8 showed that the deuterium atoms were introduced at the desired
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e901599586f616597f09abf54646d40a
https://doi.org/10.1002/jlcr.2580330306
https://doi.org/10.1002/jlcr.2580330306
Autor:
Yoshikazu Tanaka, Akemi Sekita, Akiyoshi Torii, Hiroshi Suzuki, Tatsuo Oshikawa, Tadashi Yonemitsu, Masahiro Yamashita
Publikováno v:
ChemInform. 29
Helical aromatics, 13,14-dimethyldibenzo[b,j][4,7]phenanthroline 1 and its dihydro form 2 were synthesized via a one-step reaction, resolved into each of the enantiomers by HPLC and their single crystal structures were determined.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f36453045029bed430f09e658d74e280
https://doi.org/10.1002/chin.199850173
https://doi.org/10.1002/chin.199850173
Autor:
Thies Thiemann, Shuntaro Mataka, Tadashi Yonemitsu, Masahiko Taniguchi, Shin-ichiro Isobe, Tsuyoshi Sawada
Publikováno v:
ChemInform. 30
Novel rearrangement of intermediate carbocations generated from rigid, layered [3.3]orthocyclophane-alcohols 4 are presented. The bicyclo[4.4.1]undecane framework of 4 rearranges to either bicyclo[5.4.0]- 5 and/or bicyclo[4.4.0]- 6 or tricyclo[5.4.0.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ae9c779436ed97a4b4b10dceb724cb5
https://doi.org/10.1002/chin.199946051
https://doi.org/10.1002/chin.199946051
Publikováno v:
Bulletin of the Chemical Society of Japan. 64:3094-3097
The proton NMR spectra of 1-tetradecanesulfonates whose cationic counterion, the 1,1′-polymethylenedipyridinium ion (with even-numbered methylene groups up to 14), is divalent with separate electric charge, were measured. From the chemical shifts t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bb20c9c3bf4b0619a36f54d41b3bdc6
https://doi.org/10.1246/bcsj.64.3094
https://doi.org/10.1246/bcsj.64.3094