摘要
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;同时改进了精制工艺,用石油醚-苯进行结晶代替高真空蒸馏,简化了工艺,有利于工业化生产。
An improved process for producing 4-dimethylaminopyridine(4-DMAP)from pyridinyl-pyridinium was provided.Unreacted material pyridine was recycled.Meanwhile the refining process was improved,using crystallization from petroleum-benzene instead of high vacuum distillation.The process was simplified for the benefit of industry production.
出处
《山东化工》
CAS
2007年第5期12-13,共2页
Shandong Chemical Industry
关键词
4-二甲氨基吡啶
吡啶
合成
4-dimethylaminopyridine
pyridine
synthesis
