Search Results - "井下田, 浩"

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    Reactions of N-Aminopyrazoles with Halogenating Reagents and Synthesis of 1, 2, 3-Triazines by OHSAWA, AKIO, KAIHOH, TERUMITSU, ITOH, TAKASHI, OKADA, MAMIKO, KAWABATA, CHIKAKO, YAMAGUCHI, KENTARO, IGETA, HIROSHI

    “…Reactions of N-aminopyrazoles with halogenating reagents (Cl2, Br2, I2, BrCl, ICl, IBr, N-chlorosuccinimide, and N-bromosuccinimide) were examined. Some of…”
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    REACTION OF 1, 2, 3-TRIAZINE WITH DIENOPHILES by Itoh, Takashi, Ohsawa, Akio, Okada, Mamiko, Kaihoh, Terumitsu, Igeta, Hiroshi

    Published in Chemical & pharmaceutical bulletin (01-01-1985)
    “…Reactions of 4, 6-dimethyl-1, 2, 3-triazine with electron rich acetylenes and acetylene equivalents at 180°C gave the mixtures of 2, 4-and 2,…”
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    Alkynylation of Halopyridazines and Their N-Oxides by OHSAWA, AKIO, ABE, YOSHIHITO, IGETA, HIROSHI

    Published in Chemical & pharmaceutical bulletin (01-01-1980)
    “…Various 3-alkynylpyridazines have been prepared by cross-coupling of 3-halopyridazines and monosubstituted acetylenes in Et2NH with Pd (PPh3)2Cl2-CuI as a…”
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  13. 13

    1, 3-Dipolar Cycloaddition of Pyridazinium Ylides with Perhalocycloalkenes and Thermal Decomposition of the Adducts by OHSAWA, AKIO, WADA, IKUO, IGETA, HIROSHI

    “…Some pyridazinium N-ylides underwent 1, 3-dipolar cycloaddition with perhalocyclopropenes and with a perhalocyclobutene. Thermal decomposition and chemical…”
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  14. 14

    Syntheses of Pyridazine Derivatives. IV. Reaction of 3, 6-Dimethoxypyridazine 1-Oxide with Phosphoryl Chloride by Igeta, Hiroshi

    “…Treatment of 3, 6-dimethoxypyridazine 1-oxide (I) with phosphoryl chloride at room temperatrue gave a chloro-dimethoxyl compound (II), m.p. 86°, and reaction…”
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    Cross-Coupling Reaction of Chloropyridazines and Grignard Reagents with Nickel-phosphine Complexes : Alkylation and Arylation of Pyridazines by OHSAWA, AKIO, ABE, YOSHIHITO, IGETA, HIROSHI

    “…Alkyl- and arylpyridazines have been prepared by cross-coupling reaction between chloropyridazines and Grignard reagents in the presence of nickel-phosphine…”
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    Synthesis of 3-(Dialkylamino) indolizines. Reaction of 3-(2-Pyridyl)-2-propenals with Secondary Amines by ABE, YOSHIHITO, OHSAWA, AKIO, IGETA, HIROSHI

    Published in Chemical & pharmaceutical bulletin (01-01-1982)
    “…Reaction of 2-or 3-substituted 3-(2-pyridyl)-2-propenals (3a-f) with secondary amines afforded 2-or 1-substituted 3-(dialkylamino) indolizines (2a-1) in the…”
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    ELECTRON IMPACT REACTOR FOR ORGANIC REACTIONS by Yamaguchi, Kentaro, Ohsawa, Akio, Igeta, Hiroshi

    Published in Chemical & pharmaceutical bulletin (01-01-1986)
    “…An electron impact reactor was developed. It permits the isolation of the reaction products induced by accelerated electron beams. The reaction was found by a…”
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    HALOGENATION OF 1, 2, 3-TRIAZINES by Kaihoh, Terumitsu, Ohsawa, Akio, Itoh, Takashi, Arai, Heihachiro, Igeta, Hiroshi

    “…4, 6-Dimethyl-1, 2, 3-triazine was treated with bromine and chlorine under mild conditions to give the corresponding 5-halo derivatives. The electrophlic…”
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    Flash Vacuum Pyrolysis of Aromatic Oximes by OHSAWA, AKIO, KAWAGUCHI, TAKAYUKI, IGETA, HIROSHI

    Published in Chemical & pharmaceutical bulletin (01-01-1982)
    “…Flash vacuum pyrolysis (FVP) of benzaldoximes and aryl ketoximes afforded nitriles and additional aromatic compounds which were presumably generated from…”
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    Metalation of Alkylpyridazines. I. Alkylation of Metalated Alkylpyridazines with Alkyl Halides by OHSAWA, AKIO, UEZU, TOMIO, IGETA, HIROSHI

    “…Side-chain lithiation with lithium diisopropylamide and subsequent alkylation of various alkylpyridazines have been investigated. The lithiated side chains of…”
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