2,5-ジブロモ-3-ニトロピリジン

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H301：飲み込むと有毒

• 注意書き

  P301+P310：飲み込んだ場合：直ちに医師に連絡すること。

2,5-ジブロモ-3-ニトロピリジン 価格

2,5-ジブロモ-3-ニトロピリジン 化学特性,用途語,生産方法

• 外観

  うすい黄赤色～黄色～緑色粉末～結晶

• 使用

  2,5-Dibromo-3-nitropyridine is used as organic synthesis intermediate and pharmaceutical intermediate, mainly used in laboratory research and development process and chemical production process.

• 製造方法

  synthesis of 2,5-Dibromo-3-nitropyridine: To a suspension 5-bromo-3-nitro-pyridin-2-ol (20 g, 91.32 mmol) in toluene (100 ml) was added DMF (0.7 ml, 9.13 mmol) and the mixture was heated to 90??C. (the reaction mixture was protected from light). A solution of POBr3 (31. 41 g, 109.51 mmol) in toluene (40 ml) was added dropwise at 90??C. and the reaction mixture was stirred at that temperature for 16 h. The mixture was allowed to cool to room temperature and toluene (50 ml) and water (50 ml) were added. The organic layer was separated, washed successively with aqueous 1N NaOH (60 ml), water (60 ml) and brine (30 ml), dried with Na2SO4 and evaporated obtain 2,5-Dibromo-3-nitropyridine. Yellow solid, yield 25.2 g, 97%.
  

2,5-ジブロモ-3-ニトロピリジン 上流と下流の製品情報

2,5-ジブロモ-3-ニトロピリジン 生産企業

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2,5-ジブロモ-3-ニトロピリジン スペクトルデータ(¹HNMR)

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