发明授权
- 专利标题: Preparation of ortho-methyl anilines from ortho-amino benzyl sulfoxides
- 专利标题(中): 从邻氨基苄基亚砜制备邻甲基苯胺
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申请号: US701275申请日: 1985-02-13
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公开(公告)号: US4777292A公开(公告)日: 1988-10-11
- 发明人: Michael J. Miller , John P. Chupp
- 申请人: Michael J. Miller , John P. Chupp
- 申请人地址: MO St. Louis
- 专利权人: Monsanto Company
- 当前专利权人: Monsanto Company
- 当前专利权人地址: MO St. Louis
- 主分类号: C07C87/50
- IPC分类号: C07C87/50
摘要:
This invention relates, in one of its aspects, to a process for the preparation of ortho-methyl anilines from ortho-amino benzyl sulfoxides. An ortho-amino benzyl sulfoxide is converted to an ortho-amino benzyl halide by reaction with a nonoxidizing acid halide and is converted to a stable quaternary salt by reaction with a tertiary amine in the presence of an alcohol. The quaternary salt may be cleaved by hydrogenation to form ortho-methyl anilines. Other aspects of the invention relate to novel intermediate quaternary salts and to a process for forming those quartenary salts.
公开/授权文献
- US5995261A Capacitors on dielectric feedthrus for metal packages 公开/授权日:1999-11-30