| 【文章摘要】 <正> Pyridine is a widely used category of heterocycliccompounds and an important rawmaterial for fine chemicals.Its derivativesinclude 2-methyl pyridine, 3-methylpyridine, 4-methyl pyridine,chloropyridines.They are mostly used inpesticides, pharmaceuticals, dyes, dailychemicals, spices, feed additives, rubberadditives, etc.In particular, the amount usedas a pesticide intermediate is increasedsignificantly.In recent years, application |