• 제목/요약/키워드: 3-Cyanopyridines

검색결과 3건 처리시간 0.017초

유기금속화합물에 의한 Cyanopyridines의 치환반응에 관한 연구 (Substitution Reactions of Cyanopyridines with Organometallics)

  • 김정균;유동식;문성환;박진일;박원우
    • 대한화학회지
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    • 제37권9호
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    • pp.826-831
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    • 1993
  • 3-Cyanopyridine을 organolithium 나 Grignard 시약과 반응시키면 6-위치에 첨가반응이 일어나 2-치환된 5-cyanopyridine류(6-치환된 3-cyanopyridine류)가 합성되었다. 반면, 2- 또는 4-cyanopyridine을 $CH_3Li$이나 $CH_3Mgl$와 반응시키면, 각각 2-acetylpyridine과 4-acetylpyridine이 합성되었다.

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Synthesis of Certain Mercapto and Aminopyrimidine Derivatives as Potential Antimicrobial Agents

  • El-Kerdawy, M.M.;Eisa, H.M.;El-Emam, A.A.;Massoud, M.A.;Nasr, M.N.
    • Archives of Pharmacal Research
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    • 제13권2호
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    • pp.142-146
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    • 1990
  • Reaction of ethyl 4-chloro-2-phenylpyrimidine-4-carboxylate (4) with 5-chloro-2-methylthiophenol or 3-aryl-4-phenyl-1, 2, 4-triazole-5 thiol yielded the corresponding thioethers (5) and (8a, b), respectively. Careful alkaline hydrolysis of (5) yielded the corresponding carboxylic acid (6). Reaction of (4) with p-aminoacetophenone yielded compound (10) which was reacted with certain aromatic aldehyde to afford the$\alpha,\beta$-unsaturated ketones (11a-d). Condensation of (11a-d) with malononitrile or phenylhydrazine yielded the 2-amino-3-cyanopyridines (12a-f) or the 2-pyrazolines (13a, b) respectively. Seven representative compounds were tested for their in vitro antimicrobial activity against some pathogenic micro-organisms, some of them were proved to be active.

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Experimental and Theoretical Studies on the Tautomerism in 2-Aminopyridines and 2(1H)-Pyridinones: Synthesis of 2-Amino-4-aryl-3-cyano-6-(3,4-dimethoxyphenyl)pyridines and 4-Aryl-3-cyano-6-(3,4-dimethoxyphenyl)-2(1H)-pyridinones

  • Davoodnia, Abolghasem;Attar, Paria;Morsali, Ali;Eshghi, Hossein;Tavakoli-Hoseini, Niloofar;Khadem, Shahriar
    • Bulletin of the Korean Chemical Society
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    • 제32권6호
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    • pp.1873-1878
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    • 2011
  • Under solvent-free conditions and in one-pot, a series of 2-amino-4-aryl-3-cyano-6-(3,4-dimethoxyphenyl)-pyridines and 4-aryl-3-cyano-6-(3,4-dimethoxyphenyl)-2(1H)-pyridinones were prepared using 3,4-dimethoxyacetophenone, an aldehyde, malononitrile (or ethyl cyanoacetate), and ammonium acetate in the presence of 3-methyl-1-(4-sulfonylbutyl)imidazolium hydrogen sulfate $[HO_3S(CH_2)_4MIM][HSO_4]$ (a Br${\o}$nsted acidic ionic liquid) as the catalyst in very short reaction time. The preference for the formation of more stable tautomers was consistence with the theoretical calculation using the Gaussian 03 program at the B3LYP hybrid density functional level.