Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Syuzi Hirooka"'
Autor:
Yoshiyuki Takahashi, Shigeyasu Kuroda, Ichiro Shimao, Hideya Takeda, Masaki Yamada, Takanori Kajioka, Yukimoto Hirano, Masahiro Murotani, Mitsunori Oda, Syuzi Hirooka, Mayumi Izawa
Publikováno v:
Bulletin of the Chemical Society of Japan. 67:3135-3138
Some new polyfused nonbenzenoid quinone derivatives, 6-(disubstituted methylene)- and 6-iminocyclohepta[a]phenalen-12(6H)-ones, were synthesized. The effects of substituents on electronic states were studied.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e25bf9dea688f03ae994b08131fb7c2
https://doi.org/10.1246/bcsj.67.3135
https://doi.org/10.1246/bcsj.67.3135
Autor:
Shigeyasu Kuroda, Osamu Hanida, Tomohiko Tsuchida, Syuzi Hirooka, Takayuki Sumi, Yoko Furuki, Yoshinobu Kanbata, Hideya Takeda, Masaki Yamada, Yuriko Fukuyama, Ichiro Shimao
Publikováno v:
ChemInform. 22
The titled new non linear non benzenoid quinone compounds of cyclohepta[a]phenalene-6,10-, -6,12-, -7,10-, and -7,12-diones have been synthesized. The dicationic species formed from quinones by protonation in a strong acid were revealed as diatropic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02ff108d8148c087973af3cbdf75999d
https://doi.org/10.1002/chin.199128125
https://doi.org/10.1002/chin.199128125
Autor:
Yuzi Tanbo, Katsuya Takemura, Tsuyoshi Matsuoka, Shigeyasu Kuroda, Hironori Nakahashi, Syuzi Hirooka
Publikováno v:
ChemInform. 22
A new, general synthesis of N-benzoyl-2-arylethenesulfonamides by the reaction of aryl halides including heteroaryl halides with [2-(benzoylsulfamoyl)ethyl]pyridinium chloride in the presence of palladium acetate is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::333e1f6189430f37faf630642d6edebe
https://doi.org/10.1002/chin.199131106
https://doi.org/10.1002/chin.199131106
Autor:
Yoshiyuki Takahashi, Masahiro Murotani, Tomoaki Hidenaga, Ichiro Shimao, Shigeyasu Kuroda, Syuzi Hirooka, Toshiaki Ozaki, Masaki Yamada, Guan-Jin Guan, Masayuki Saka
Publikováno v:
Chemistry Letters. 21:719-722
The reaction of 8,9,10,11-Tetrahydrocyclohepta[a]phenalen-6(12H)-one-12-ol and -7(12H)-one-12-ol with H2SO4 gave skeletally rearranged 9- and 10-methylbenz[de]anthracen-6-one and -7-one via destabilized vicinal dications.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2ef3b9e9fe33f5575f128c0266bbc0c
https://doi.org/10.1246/cl.1992.719
https://doi.org/10.1246/cl.1992.719
Autor:
Syuzi Hirooka, Ichiro Shimao, Masaki Yamada, Hideya Takeda, Shigeyasu Kuroda, Tomohiko Tsuchida, Takayuki Sumi, Yoshinobu Kanbata, Osamu Hanida, Yoko Furuki, Yuriko Fukuyama
Publikováno v:
Bulletin of the Chemical Society of Japan. 64:971-982
The titled new non linear non benzenoid quinone compounds of cyclohepta[a]phenalene-6,10-, -6,12-, -7,10-, and -7,12-diones have been synthesized. The dicationic species formed from quinones by protonation in a strong acid were revealed as diatropic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66ca910704b79ab65f97e66393870fab
https://doi.org/10.1246/bcsj.64.971
https://doi.org/10.1246/bcsj.64.971
Autor:
Hironori Nakahashi, Yuzi Tanbo, Katsuya Takemura, Shigeyasu Kuroda, Tsuyoshi Matsuoka, Syuzi Hirooka
Publikováno v:
Bulletin of the Chemical Society of Japan. 64:1431-1433
A new, general synthesis of N-benzoyl-2-arylethenesulfonamides by the reaction of aryl halides including heteroaryl halides with [2-(benzoylsulfamoyl)ethyl]pyridinium chloride in the presence of palladium acetate is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b3742d01a5aa01675d10c2243ea0a2d
https://doi.org/10.1246/bcsj.64.1431
https://doi.org/10.1246/bcsj.64.1431
Autor:
Keiichi Ishikawa, Kiyoshi Hasegawa, Nobuyuki Takeda, Hiroshi Kawahara, Syuzi Hirooka, Hisakatsu Mukai, Akihiko Nakayama
Publikováno v:
Bulletin of the Chemical Society of Japan. 51:1805-1810
The syntheses of new heterocyclic compounds by the reaction of 2-arylacetylene-1-sulfonamides 1, (Z)-β-bromo- 12 or (Z)-α-chloro-β-styrenesulfonamides 13 with heterocumulenes are described. Weak base treatment of ureas R1C6H4C≡CSO2NHC(=O)NHR2 pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9fa20a381a77448a56d278d7a493e83
https://doi.org/10.1246/bcsj.51.1805
https://doi.org/10.1246/bcsj.51.1805
Autor:
Mariko Ikeda, Masahiro Ogisu, Takeshi Nakao, Masafumi Yasunami, Hiroyuki Iwaki, Shigeyasu Kuroda, Kahei Takase, Syuzi Hirooka
Publikováno v:
Chemistry Letters. 15:2039-2042
The titled compounds were synthesized. The complete assignment of 1H-NMR spectrum of methyl azulen[1,2-b]azulene-2-carboxylate and the rearrangement of ester group on seven membered ring in the dehydrogenation reaction are described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5a8cfd701bdacecf1573263caaf0e68
https://doi.org/10.1246/cl.1986.2039
https://doi.org/10.1246/cl.1986.2039
Autor:
Ichiro Shimao, Masahiro Ogisu, Masafumi Yasunami, Shigeyasu Kuroda, Kazuo Yamazaki, Sunao Maeda, Syuzi Hirooka
Publikováno v:
Tetrahedron Letters. 30:1557-1560
The titled azuleno-annulenone was synthesized and in strong acid its protonated cationic species was generated, which is the first 18-pi electron diatropic condensed bridged annulene as shown in its 1H-NMR spectrum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a63f54fe669ad1891545044acb05cec4
https://doi.org/10.1016/s0040-4039(00)99518-2
https://doi.org/10.1016/s0040-4039(00)99518-2
Autor:
Masahiro Nomura, Hiroshi Kawahara, Yutaka Hori, Kiyoshi Hasegawa, Syuzi Hirooka, Atsushi Tanaka
Publikováno v:
Bulletin of the Chemical Society of Japan. 50:2346-2350
The photobromination of trans-β-styrenesulfonamides in acetic acid at 16–18 °C gave about 75 : 25 mixtures of threo (cis adducts)- and erythro-1,2-dibromo-2-arylethane-1-sulfonamides (trans adducts). A similar photobromination of cis-β-styrenesu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89a80bbbfc4e4ba3a11f3807ee1a9468
https://doi.org/10.1246/bcsj.50.2346
https://doi.org/10.1246/bcsj.50.2346