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    • 6. 发明授权
    • Method for producing carboxylic acid chloride
    • 羧酸氯化物的制备方法
    • US08198482B2
    • 2012-06-12
    • US12529307
    • 2008-02-27
    • Takeshi KobayashiKiyomi KidoAkinori Nagatomo
    • Takeshi KobayashiKiyomi KidoAkinori Nagatomo
    • C07C51/58
    • C07C51/60C07C51/64C07C55/36
    • This invention relates to a method for producing a carboxylic acid chloride, which efficiently decomposes a Vilsmeier reagent type compound in a carboxylic acid chloride lacking a thermal stability or a carboxylic acid chloride hardly distilled in practice due to a high boiling point with a simple operation and has no adverse effect on a subsequent step, and more particularly to a method for producing a carboxylic acid chloride, characterized by comprising reacting a carboxylic acid with a chlorinating agent in the presence of a catalyst, removing the excessive chlorinating agent from a reaction system after the reaction, and then further adding 1.0 to 3.0 equivalents of the starting carboxylic acid based on the catalyst to the reaction system to decompose a Vilsmeier reagent type compound remaining in the reaction system.
    • 本发明涉及一种生产羧酸氯化物的方法,该方法通过简单的操作由于沸点高而在实际上难以蒸馏的Vilsmeier试剂型化合物在不具有热稳定性的羧酸氯化物或羧酸氯化物中有效分解, 对后续步骤没有不利影响,更具体地说,涉及一种制备羧酰氯的方法,其特征在于包括在催化剂存在下使羧酸与氯化剂反应,在反应体系之后从反应体系中除去过量的氯化剂 反应,然后将基于催化剂的1.0〜3.0当量的起始羧酸加入到反应体系中以分解残留在反应体系中的Vilsmeier试剂型化合物。
    • 8. 发明申请
    • METHOD FOR PRODUCING CARBOXYLIC ACID CHLORIDE
    • 生产羧酸氯化物的方法
    • US20100099911A1
    • 2010-04-22
    • US12529307
    • 2008-02-27
    • Takeshi KobayashiKiyomi KidoAkinori Nagatomo
    • Takeshi KobayashiKiyomi KidoAkinori Nagatomo
    • C07C51/60
    • C07C51/60C07C51/64C07C55/36
    • This invention relates to a method for producing a carboxylic acid chloride, which efficiently decomposes a Vilsmeier reagent type compound in a carboxylic acid chloride lacking a thermal stability or a carboxylic acid chloride hardly distilled in practice due to a high boiling point with a simple operation and has no adverse effect on a subsequent step, and more particularly to a method for producing a carboxylic acid chloride, characterized by comprising reacting a carboxylic acid with a chlorinating agent in the presence of a catalyst, removing the excessive chlorinating agent from a reaction system after the reaction, and then further adding 1.0 to 3.0 equivalents of the starting carboxylic acid based on the catalyst to the reaction system to decompose a Vilsmeier reagent type compound remaining in the reaction system.
    • 本发明涉及一种生产羧酸氯化物的方法,该方法通过简单的操作由于沸点高而在实际上难以蒸馏的Vilsmeier试剂型化合物在不具有热稳定性的羧酸氯化物或羧酸氯化物中有效分解, 对后续步骤没有不利影响,更具体地说,涉及一种制备羧酰氯的方法,其特征在于包括在催化剂存在下使羧酸与氯化剂反应,在反应体系之后从反应体系中除去过量的氯化剂 反应,然后将基于催化剂的1.0〜3.0当量的起始羧酸加入到反应体系中以分解残留在反应体系中的Vilsmeier试剂型化合物。