大沢 昭緒 OHSAWA Akio

ID:1000000102369

School of Pharmaceutical Sciences, Showa University (1995年 CiNii収録論文より)

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論文一覧:  33件中 1-20 を表示

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  • THE SYNTHESIS OF 5-SUBSTITUTED 1, 2, 3-TRIZAINES WITH KETENE SILYL ACETALS AND CERIC AMMONIUM NITRATE

    伊藤 喬 , 松谷 裕二 , 長谷川 博司 , 永田 和弘 , 岡田 真弥子 , 大沢 昭緒

    Monocyclic 1,2,3-triazines were reacted with ketene silyl acetal or silyl enol ether in the presence of 1-chloroethyl chloroformate to give 5-substituted 2-(1-chloroethoxycarbonyl)-2,5-dihydrotriazine …

    Chemical & pharmaceutical bulletin 43(5), 881-883, 1995-05-15

    参考文献18件

  • 1,2,3-トリアジン

    大沢 昭緒 , 伊藤 喬

    Chemistry of 1,2,3-triazines and their derivatives is described. This subject is focused on the authors' studies. Syntheses, structures, and electrophilic, nucleophilic, and nonionic reactions of 1,2, …

    薬学雑誌 114(12), p934-949, 1994-12

  • Reaction of Six-Membered Azaaromatics with Allyltributyltin

    伊藤 喬 , 長谷川 博司 , 永田 和弘 , 松谷 裕二 , 岡田 真弥子 , 大沢 昭緒

    Pyridazines were reacted with allyltributyltin in the presence of chloroformate to give 1-alkoxycarbonyl-6-allyl and 1-alkoxycarbonyl-4-allyldihydropyridazines as major and minor products, respectivel …

    Chemical & pharmaceutical bulletin 42(9), 1768-1773, 1994-09-15

  • THE REACTION OF 1-ETHOXYCARBONYL-3-METHYLBENZIMIDAZOLIUM SALTS WITH ELECTROGENERATED AND POTASSIUM SUPEROXIDE

    伊藤 喬 , 永田 和弘 , 岡田 真弥子 , 大沢 昭緒

    1-Ethoxycarbonyl-3-methylbenzimidazolium salts, which have two possible reactive sites toward superoxide, were allowed to react with KO_2 and electrogenerated superoxide to give the ring-opened produc …

    Chemical & pharmaceutical bulletin 42(5), 1154-1156, 1994-05-15

  • Vicarious Nucleophilic Substitution of Pyridines and 1,2,3-Triazines via Their Dicyanomethylide Derivatives

    永田 和弘 , 伊藤 喬 , 岡田 真弥子 , 大沢 昭緒

    Vicarious nucleophilic substitution using chloromethyl phenyl sulfone was applied to pyridinium and 1,2,3-triazinium dicyanomethylides to afford corresponding 4-substituted pyiridinium and 5-substitut …

    Chemical & pharmaceutical bulletin 41(9), 1644-1648, 1993-09-15

  • VICARIOUS NUCLEOPHILIC SUBSTITUTION OF PYRIDINES VIA THEIR DICYANOMETHYLIDE DERIVATIVES

    伊藤 喬 , 永田 和弘 , 岡田 真弥子 , 大沢 昭緒

    Vicarious nucleophilic substitution of pyridinium 1-dicyanomethylides with 1-chloromethyl phenyl sulfone gave corresponding 4-substituted derivatives. The dicyanomethylene group was readily eliminated …

    Chemical & pharmaceutical bulletin 41(1), 220-222, 1993-01-15

  • The Reactions of 2-Methyl-1,2,3-triazinium Iodides and Related Compounds

    伊藤 喬 , 永田 和弘 , 岡田 真弥子 , 大沢 昭緒

    The 2-methyl-1,2,3-triazinium iodides 2 reacted with various nucleophiles to give the corresponding 2,5-dihydro-adducts. When 2 was treated with potassium superoxide, it was dimerized to 5,5'-bi(2-met …

    Chemical & pharmaceutical bulletin 40(9), 2283-2286, 1992-09-25

  • Revised Structure of N-Oxidation Products of 4,5,6-Triaryltriazines : 1,2,3-Triazine 2-Oxides

    大沢 昭緒 , 伊藤 喬 , 山口 健太郎 , 川畑 千香子

    The N-oxidation products of 4,5,6-triaryl-1,2,3-triazines were decided to be the 2-oxides on the basis of spectral data and X-ray crystallography; the structures are different from those reported prev …

    Chemical & pharmaceutical bulletin 39(8), 2117-2119, 1991-08-25

  • 19 スルホン酸基を含まない食用色素と塩酸アンブロキソールとの塩の形成

    谷口 貴子 , 渡辺 道子 , 浅海 博子 , 梅沢 修 , 大沢 昭緒

    日本病院薬学会年会講演要旨集 1, 48-49, 1991-06-25

  • The Degradation Pathway of 1,2,3,4-Tetrazine

    海宝 輝光 , 伊藤 喬 , 山口 健太郎 , 大沢 昭緒

    The potential energy surfaces of the degradations of 1,2,3,4-tetrazine (1a) to C_2H_2+2N_2 or 2HCN+N_2 were obtained from semiempirical molecular orbital calculations using the AM1 method. It was sugg …

    Chemical & pharmaceutical bulletin 38(12), 3191-3194, 1990-12-25

  • The Ring Transformation of 1,2,3-Triazines

    伊藤 喬 , 岡田 真弥子 , 永田 和弘 , 山口 健太郎 , 大沢 昭緒

    Monocyclic 1,2,3-triazines reacted with electron rich dienophiles to give pyridines and pyridazines. 4,6-Disubstituted 1,2,3-triazine was denitrogenated to the azete intermediate, which afforded isome …

    Chemical & pharmaceutical bulletin 38(8), 2108-2111, 1990-08-25

  • Electrooxidation of N-Aminopyrazoles

    伊藤 喬 , 永田 和弘 , 岡田 真弥子 , 大沢 昭緒

    N-Aminopyrazoles were oxidized by electrolysis in CH_3CN to give 1,2,3-triazines and pyrazoles. The ratio of triazine formation increased when pyridine or H_2O was added to the solvent. Reaction mecha …

    Chemical & pharmaceutical bulletin 38(6), 1524-1526, 1990-06-25

  • 1,2,3-トリアジン2-イミンの合成,構造及び反応

    大沢 昭緒 [他] , 新井 平八郎 , 大西 英文 , 伊藤 喬 , 山口 健太郎 , 海宝 輝光 , 川畑 千香子 , 井下田 浩

    Synthesis, structure and reactions of 1,2,3-triazine 2-imines are described. In solution, a monomeric form is the stable form of the compounds which were synthesized from 1,2,3-triazines. The compound …

    薬学雑誌 108(11), p1056-1063, 1988-11

    被引用文献1件

  • 4,6-ジメチル-1,2,3-トリアジン2-イミンの結晶構造

    山口 健太郎 [他] , 大沢 昭緒 , 伊藤 喬 , 川畑 千香子

    Evidence of the presence of monomeric heterocyclic N-imine is shown. Crystal structure of the titled compound revealed its characteristic construction including three classified molecular pairs in a u …

    薬学雑誌 108(11), p1040-1045, 1988-11

    被引用文献1件

  • Reactions of N-Aminopyrazoles with Halogenating Reagents and Synthesis of 1,2,3-Triazines

    大沢 昭緒 , 海宝 輝光 , 伊藤 喬 , 岡田 真弥子 , 川畑 千香子 , 山口 健太郎 , 井下田 浩

    Reactions of N-aminopyrazoles with halogenating reagents (Cl_2,Br_2,I_2,BrCl, ICl, IBr, N-chlorosuccinimide, and N-bromosuccinimide) were examined. Some of these reagents preferentially lead to oxidat …

    Chemical & pharmaceutical bulletin 36(10), 3838-3848, 1988-10-25

  • HALOGENATION OF 1,2,3-TRIAZINES

    海宝 輝光 , 大沢 昭緒 , 伊藤 喬 , 新井 平八郎 , 井下田 浩

    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 addition-elimination mechanism was suggested by t …

    Chemical & pharmaceutical bulletin 34(10), 4432-4434, 1986-10-25

    医中誌Web

  • 1,3-Dipolar Cycloaddition of Pyridazinium Ylides with Perhalocycloalkenes and Thermal Decomposition of the Adducts

    大沢 昭緒 , 和田 育男 , 井下田 浩

    Some pyridazinium N-ylides underwent 1,3-dipolar cycloaddition with perhalocyclopropenes and with a perhalocyclobutene. Thermal decomposition and chemical transformations of the pyrolyzed products aff …

    Chemical & pharmaceutical bulletin 34(3), 1023-1031, 1986-03-25

    医中誌Web

  • ELECTRON IMPACT REACTOR FOR ORGANIC REACTIONS

    山口 健太郎 , 大沢 昭緒 , 井下田 浩

    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 rate law study to be consistent with rate …

    Chemical & pharmaceutical bulletin 34(1), 426-429, 1986-01-25

    医中誌Web

  • Synthesis of 1,2,3-Triazine N-Oxides

    大沢 昭緒 , 新井 平八郎 , 大西 英文 , 海宝 輝光 , 山口 健太郎 , 井下田 浩 , 飯高 洋一

    N-Oxidation of substituted 1,2,3-triazines afforded the 1- and/or 2-oxides. The molecular structure of 4,5,6-triphenyl-1,2,3-triazine 2-oxide was studied crystallographically.

    Chemical & pharmaceutical bulletin 34(1), 109-114, 1986-01-25

    医中誌Web

  • 1,2,3-トリアジン誘導体の水素化ホウ素ナトリウムによる還元

    大沢 昭緒 [他] , 新井 平八郎 , 大西 英文 , 海宝 輝光 , 伊藤 喬 , 山口 健太郎 , 井下田 浩 , 飯高 洋一

    The reduction of substituted monocyclic 1,2,3-triazines with sodium borohydride in methanol afforded their 2,5-dihydro derivatives. The reduction of their 2-methyl quaternary salts also gave the 2,5-d …

    薬学雑誌 105(12), p1122-1130, 1985-12

    医中誌Web

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