Syuzi Hirooka | Researchain

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Featured researches published by Syuzi Hirooka.

Tetrahedron Letters | 1989

The synthesis and properties of azuleno[1,2-d]bicyclo[5.4.1]dodeca-1,4,6,8,9a-pentaen-3-one and its cationic species

Shigeyasu Kuroda; Sunao Maeda; Syuzi Hirooka; Masahiro Ogisu; Kazuo Yamazaki; Ichiro Shimao; Masafumi Yasunami

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.

Bulletin of the Chemical Society of Japan | 1972

The Synthesis of the New 1,4,2-Dithiazine Ring

Kiyoshi Hasegawa; Syuzi Hirooka

Bulletin of the Chemical Society of Japan | 1972

The Synthesis of the 3-Substituted 1,4,2-Dithiazine 1,1-Dioxides

Kiyoshi Hasegawa; Syuzi Hirooka

Bulletin of the Chemical Society of Japan | 1973

Michael Cycloaddition of 2-Phenylethene-1-sulfonamide with Carbon Disulfide

Kiyoshi Hasegawa; Tadashi Sasaki; Syuzi Hirooka

Bulletin of the Chemical Society of Japan | 1972

The Synthesis of the 1,2,4-Thiadiazine-1,1-dioxides

Kiyoshi Hasegawa; Syuzi Hirooka

Bulletin of the Chemical Society of Japan | 1991

Palladium-Catalyzed Synthesis of N-Benzoyl-2-arylethenesulfonamides from [2-(Benzoylsulfamoyl)ethyl]pyridinium Chloride and Aryl Halides

Syuzi Hirooka; Yuzi Tanbo; Katsuya Takemura; Hironori Nakahashi; Tsuyoshi Matsuoka; Shigeyasu Kuroda

Chemistry Letters | 1986

Synthesis of methyl azulen[1,2-b]azulene-2-carboxylate and dimethyl azulen[1,2-b]azulene-2,4-dicarboxylate

Shigeyasu Kuroda; Syuzi Hirooka; Hiroyuki Iwaki; Mariko Ikeda; Takeshi Nakao; Masahiro Ogisu; Masafumi Yasunami; Kahei Takase

Angewandte Chemie | 1985

Cyclohepta[a]phenalen‐6,12‐dion und sein Dikation

Shigeyasu Kuroda; Yuriko Fukuyama; Tomohiko Tsuchida; Eishi Tanaka; Syuzi Hirooka

Bulletin of the Chemical Society of Japan | 1978

The reactions of 2-arylacetylene-1-sulfonamides with heterocumulenes.

Kiyoshi Hasegawa; Syuzi Hirooka; Hiroshi Kawahara; Akihiko Nakayama; Keiichi Ishikawa; Nobuyuki Takeda; Hisakatsu Mukai

Bulletin of the Chemical Society of Japan | 1991

The Synthesis and Properties of Cyclohepta[a]phenalene-6,10-, -6,12-, -7,10-, and -7,12-diones and Their Dicationic and Dianionic Species

Shigeyasu Kuroda; Yoshinobu Kanbata; Yuriko Fukuyama; Syuzi Hirooka; Hideya Takeda; Tomohiko Tsuchida; Yoko Furuki; Takayuki Sumi; Osamu Hanida; Masaki Yamada; Ichiro Shimao

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