A new process for the direct chlorination of 2-chloro-5-methylpyridine to yield 2-chloro-5-chloromethylpyridine in an ai......

In order to reduce the production cost of imidacloprid, the preparation technology for the direct combination of 2-chlor......

建立2-氯-5-氯甲基吡啶高效液相色谱分析方法。采用Agilent SB-C18色谱柱,流动相为乙腈-水(体积比50∶50),流速为1.0 mL/min,紫外......

对吡虫啉的合成工艺进行清洁化研究。以2-氯-5-氯甲基吡啶、乙二胺和硝基胍为原料,二氯乙烷代替乙腈为溶剂,运用串联反应方法合成......