发明授权
- 专利标题： Process for the preparation of 4-amino-1,2,4-Triazole
- 专利标题（中）： 4-氨基-1,2,4-三唑的制备方法
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申请号： US09390286申请日： 1999-09-03
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公开(公告)号： US06504033B1公开(公告)日： 2003-01-07
- 发明人: Paul Bourdauducq
- 申请人： Paul Bourdauducq
- 优先权： FR9613590 19961107
- 主分类号： C07D24908
- IPC分类号： C07D24908
摘要：
The present invention relates to a process for the preparation of products of formula (1): in which R denotes H or an alkyl group containing from 1 to 10 carbon atoms, it being possible for this alkyl group to be substituted by one or more aryl, heteroaryl, hydroxyl or alkenyl groups, in which process hydrazine is reacted with a deficiency of carboxylic acid RCOOH and then the water of reaction and optionally the water of dilution of the hydrazine and of the acid is removed. It is particularly useful for preparing 4-amino-1,2,4-triazole.
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