4,5-Dibromo-3-methylthiophene-2-carboxylic acid
4,5-Dibromo-3-methylthiophene-2-carboxylic acid 物理性質
- 融点 :
- 225-226 °C
- 沸点 :
- 369.8±42.0 °C(Predicted)
- 比重(密度) :
- 2.141±0.06 g/cm3(Predicted)
- 貯蔵温度 :
- under inert gas (nitrogen or Argon) at 2–8 °C
- 酸解離定数(Pka):
- 3.48±0.10(Predicted)
安全性情報
- リスクと安全性に関する声明
- 危険有害性情報のコード(GHS)
4,5-Dibromo-3-methylthiophene-2-carboxylic acid 価格
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4,5-Dibromo-3-methylthiophene-2-carboxylic acid 化学特性,用途語,生産方法
製造方法
4,5-Dibromo-3-methyl-2-thiophenecarboxylic acid synthesis: 4,5-dibromo-3-methyl-2-thiophenecarbonitrile (26.2 g, 92.2 mmol), EtOH (175 mL), water (175 mL), and NaOH (18.6 g, 466 mmol) were stirred together at 80°C for 1 h. The solvent was removed, the solids were collected by filtration, dissolved in water, and washed with CH2Cl2. The water layer was acidified with 37% HCl, the white solid was collected by filtration and dried under vacuum at 60°C to give 25.9 g (94% wt.) of 4,5-dibromo-3-methyl-2-thiophenecarboxylic acid: m.p. 225-226°C; 1H NMR (CDCl3) 2.5 (s).
4,5-Dibromo-3-methylthiophene-2-carboxylic acid 上流と下流の製品情報
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4,5-Dibromo-3-methylthiophene-2-carboxylic acid 生産企業
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- 4,5-dibromo-3-methyl-2-Thiophenecarboxylic acid
- 4,5-Dibromo-3-methylthiophene-2-carboxylic acid
- 2-Thiophenecarboxylic acid, 4,5-dibromo-3-methyl-