Výsledky vyhledávání - "Hiraku Ishihara"

Changes in the density of circulating erythrocytes of the bullfrog tadpole, Rana catesbeiana, in relation to the transition of hemoglobin during metamorphosis

Autor: Taro Okazaki, Ryoiti Shukuya, Hiraku Ishihara

Publikováno v: Comparative Biochemistry and Physiology Part B: Comparative Biochemistry. 73:309-312

1. The circulating erythrocytes of Rana catesbeiana tadpoles at varying metamorphic stages were studied by the phthalate-microcapillary technique of Danon & Marikovsky (1964 J. Lab. Clin. Med. 64, 668-674) and by the method of Murphy (1973 J. Lab. Cl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1e9e80add0da351427b142bd0329b05
https://doi.org/10.1016/0305-0491(82)90289-9

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[Untitled]

Autor: Hiraku Ishihara

Publikováno v: Journal of Nippon Medical School. 46:393-403

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75e860ee04321b7b7d731a42939e6902
https://doi.org/10.1272/jnms1923.46.393

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Anthracene Derivatives as Acceptors of the Reaction Intermediate Generated by the Decomposition of Tropone Tosylhydrazone Sodium Salt. Regioselective Cycloaddition Reactions of Cycloheptatrienylidene or 1,2,4,6-Cycloheptatetraene with 9-Substituted Anthracene Derivatives

Autor: Hiraku Ishihara, Katsuhiro Saito

Publikováno v: Bulletin of the Chemical Society of Japan. 59:1095-1098

The rearrangement of the carbene, cycloheptatrienylidene, to the allene, 1,2,4,6-cycloheptatetraene, was investigated. Tropone tosylhydrazone sodium salt, the precursor of cycloheptatrienylidene was decomposed in the presence of various kinds of 9-su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e4aa85fbb3c5e8705bf43af0572122d
https://doi.org/10.1246/bcsj.59.1095

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Stereospecific and Nucleophilic Additions of 2- and 3-Thienylmethylene. Reactions of 2- and 3-Thienylmethylene withcis- andtrans-Stilbene, Dimethyl Maleate, Dimethyl Fumarate, and Styrene Derivatives

Autor: Yoichi Horie, Katsuhiro Saito, Etsuro Maekawa, Hiraku Ishihara, Toyonobu Murase

Publikováno v: Bulletin of the Chemical Society of Japan. 60:4317-4320

The addition reactions of 2-thienylmethylene with cis- and trans-stilbene afforded stereospecific adducts, respectively, indicating that the multiplicity of the carbene is singlet. The nucleophilicity of the carbenes was elucidated by an investigatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cb5accbf2496da2bc1808b47a8c1411b
https://doi.org/10.1246/bcsj.60.4317

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Reactions of Sodium Salts of Tosylhydrazones of 2- and 3-Thiophenecarbaldehydes, 1-Methyl-2-pyrrolecarbaldehyde, and Furfural with Acrylonitrile

Autor: Kensuke Takahashi, Hiraku Ishihara, Tatsuji Sato, Katsuhiro Saito

Publikováno v: Bulletin of the Chemical Society of Japan. 62:1925-1929

Reactions of the sodium salts of tosylhydrazones of several heteroaromatic aldehydes with an equimolar amount of acrylonitrile afforded the corresponding cyclopropane derivatives as the major products accompanied by small amounts of pyrazole derivati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40e9db8c88c672c79d6e6f65a7677a30
https://doi.org/10.1246/bcsj.62.1925

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Decompositions of Tropone Tosylhydrazone Sodium Salt in the Presence of Cyclopentadienone Derivatives. [4+2]-Type Cycloaddition Reactions of Cycloheptatrienylidene or 1,2,4,6-Cycloheptatetraene with Cyclopentadienone Derivatives

Autor: Katsuhiro Saito, Hiraku Ishihara

Publikováno v: Bulletin of the Chemical Society of Japan. 58:2664-2668

Tropone tosylhydrazone sodium salt, the precursor of the cyclic conjugated carbene (cycloheptatrienylidene), was decomposed in the presence of various cyclopentadienone derivatives to give endo- and exo-[4+2]-type adducts and benzotropylidene derivat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ab1fb566d0fe21f6ace3125c8e87dc64
https://doi.org/10.1246/bcsj.58.2664

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ChemInform Abstract: Thermolysis of Sodium Salt of Furfural Tosylhydrazone (I) in the Presence of Silver Chromate: Formation of 2-Furyl(p-toluenesulfonyl)methane (II) via 1,3-N→C Migration of Tosyl Group

Autor: Hiraku Ishihara, Katsuhiro Saito

Publikováno v: Chemischer Informationsdienst. 17

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::79642150ac2eb60922db431adb5cec5c
https://doi.org/10.1002/chin.198641209

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[2π+2σ] and [4π+2σ] Type Cycloaddition Reactions of Furan and Benzofurans with Benzocyclopropene

Autor: Hiraku Ishihara, Katsuhiro Saito, Shinzo Kagabu

Publikováno v: Bulletin of the Chemical Society of Japan. 60:4141-4142

Reactions of benzocyclopropene with furan and benzofuran afforded [2π+2σ]-type cycloaddition products, where the furans act as 2π-components and benzocyclopropene acts as a 2σ-component. A similar reaction with 1,3-diphenylisobenzofuran gave a [4

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b9380188b48313aaaee549793fedef0e
https://doi.org/10.1246/bcsj.60.4141

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Reactions of Tropone Tosylhydrazone Sodium Salt with 2-Pyrone Derivatives: Nucleophilic Addition of 1,2,4,6-Cycloheptatetraene to 2-Pyrone Derivatives

Autor: Katsuhiro Saito, Hiraku Ishihara

Publikováno v: Bulletin of the Chemical Society of Japan. 60:4447-4448

The reaction of tropone tosylhydrazone sodium salt with 3- or 5-methoxycarbonyl-2-pyrones afforded benzotropilidene derivatives. These products are considered to be formed via addition reactions of the 2-pyrone derivatives with 1,2,4,6-cycloheptatetr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::110c5da80b5dbbcbe27ec33a6b3da1c7
https://doi.org/10.1246/bcsj.60.4447

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