An improved process for producing 4-dimethylaminopyridine(4-DMAP)from pyridinyl-pyridinium was provided.Unreacted material pyridine was recycled.

• 对双吡啶盐法合成4-二甲氨基吡啶(4-DMAP)工艺进行了改进,回收了未反应的原料吡啶;