Pyridine-2,3-dicarboxylic anhydride, a key intermediate of the herbicide imazapyr, was synthesized from pyridine-2,3-dicarboxylic acid and anhydride according to the methods in the patents.
吡啶羧酸酐是新型广谱除草剂灭草烟的重要中间体，文献所介绍的合成方法是以2，3-吡啶二羧酸与乙酸酐反应制得。
Pyridine-2,3-dicarboxylic anhydride, a key intermediate of the herbicide imazapyr, was synthesized from pyridine-2,3-dicarboxylic acid and anhydride according to the methods in the patents.
吡啶羧酸酐是新型广谱除草剂灭草烟的重要中间体，文献所介绍的合成方法是以2，3-吡啶二羧酸与乙酸酐反应制得。
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