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N-ARYLSULFONYL-3-AMINOALKOXYINDOLES
专利权人:
SUVEN LIFE SCIENCES LIMITED
发明人:
VENKATESWARLU JASTI,VENKATA SATYA NIROGI RAMAKRISHNA,RAMA SASTRI KAMBHAMPATI,VENKATA SATYA VEERABHADRA VADLAMUDI RAO,VIKAS SHREEKRISHNA SHIRSATH
申请号:
PT03778739
公开号:
PT1567492E
申请日:
2003.11.25
申请国别(地区):
PT
年份:
2013
代理人:
摘要:
An improved process for producing 4-dimethyl amino pyridine is provided. The process comprises quaternizing pyridine with a suitable quaternizing agent in the presence of organic solvent, isolating the resulting salt and aminating the salt, N- [4-pyridyl] pyridinium chloride hydrochloride, with N, N-dimethyl formamide. The resultant reaction mass is hydrolysed in the presence of a base, extracted with a suitable organic solvent and distilled under vacuum to produce 4-dimethyl amino pyridine.
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中国工程科技知识中心
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