发明授权
US5606093A Process for preparing N-phosphonomethylglycinonitrile or derivatives
thereof
失效
N-膦酰基甲基甘氨腈或其衍生物的制备方法
- 专利标题： Process for preparing N-phosphonomethylglycinonitrile or derivatives thereof
- 专利标题（中）： N-膦酰基甲基甘氨腈或其衍生物的制备方法
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申请号： US532832申请日： 1995-10-05
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公开(公告)号： US5606093A公开(公告)日： 1997-02-25
- 发明人: Ian Hodgkinson
- 申请人： Ian Hodgkinson
- 申请人地址： GBX London
- 专利权人： Zeneca Limited
- 当前专利权人： Zeneca Limited
- 当前专利权人地址： GBX London
- 优先权： GBX9307234 19930407
- 主分类号： C07F9/38
- IPC分类号： C07F9/38 ; C07F9/40
摘要：
A process for the manufacture of an acid salt of an alkyl ester of N-phosphonomethylglycinonitrile is described which comprises reacting methyleneaminoacetonitrile trimer with a trialkylphosphite. The process is carried out under anhydrous conditions and in the presence of an anhydrous acid and an inert solvent in which methyleneaminoacetonitrile trimer is at least partially soluble and the acid salt of the alkyl ester of N-phosphonomethylglycinonitrile product is substantially insoluble. This is followed by recovering the precipitated acid salt of the alkyl ester of N-phosphonomethylglycinonitrile.
公开/授权文献
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