A Synthesis Method of Diethyl 5-Ethylpyridine-2,3-Dicarboxylate  

作　　者：Yu Fei Li Ziliang Lin Yang Bao Ning 

机构地区：[1]Shenyang Sciencreat Chemicals Co.,Ltd.,Shenyang 110144,China

出　　处：《Plant Diseases and Pests》2020年第2期20-22,27,共4页植物病虫害研究（英文版）

摘　　要：[Objective]This paper was to synthesize the intermediate diethyl 5-ethylpyridine-2,3-dicarboxylate of imazethapyr using 5-ethyl-2,3-pyridinedicarboxylic acid as the raw material.[Method]Diethyl 5-ethylpyridine-2,3-dicarboxylate was successfully synthesized via direct esterification and indirect esterification.[Result]The structure of intermediate was confirmed by LC and1 H NMR.[Conclusion]The intermediate yield of the two methods was both above 89%.Imazethapyr was prepared from the intermediate and the purity reached 99%.

关 键 词：Diethyl 5-ethylpyridine-2 3-dicarboxylate IMAZETHAPYR Synthesis 

分 类 号：TQ457.2[化学工程—农药化工] O626[理学—有机化学]