发明授权
- 专利标题： Process for reducing dithiocarbazinate buildup in the preparation of methyl dithiocarbazinate
- 专利标题（中）： 二硫代肼基甲酸二甲酯的制备方法
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申请号： US869325申请日： 1997-06-05
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公开(公告)号： US5861526A公开(公告)日： 1999-01-19
- 发明人: David M. Mayes
- 申请人： David M. Mayes
- 申请人地址： PA Pittsburgh
- 专利权人： Bayer Corporation
- 当前专利权人： Bayer Corporation
- 当前专利权人地址： PA Pittsburgh
- 主分类号： C07C337/02
- IPC分类号： C07C337/02 ; C07C333/00
摘要：
Disclosed herein is an improved process for preparing methyl dithiocarbazinate by reacting carbon disulfide and hydrazine in an effective ratio to form hydrazinium dithiocarbazinate, followed by methylating the hydrazinium dithiocarbazinate with methyl bromide. The improvement resides in conducting the reaction of the carbon disulfide and hydrazine in the presence of a specified amount of a non-alcoholic solvent to reduce dithiocarbazinate buildup.
公开/授权文献
- US5214055A Aminopiperidine 4-oxo-4H-chromen-2-yl compounds 公开/授权日：1993-05-25
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