发明授权
- 专利标题： Process for the preparation of N-alkylated anilines
- 专利标题（中）： N-烷基化苯胺的制备方法
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申请号： US552277申请日： 1990-07-12
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公开(公告)号： US5055617A公开(公告)日： 1991-10-08
- 发明人: Peter Wimmer , Hans-Josef Buysch , Lothar Puppe , Christian Froehlich
- 申请人： Peter Wimmer , Hans-Josef Buysch , Lothar Puppe , Christian Froehlich
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX3924999 19890728
- 主分类号： C07C209/18
- IPC分类号： C07C209/18 ; C07C211/48
摘要：
Anilines or N-alkyl-anilines are advantageously reacted with alkyl alcohols or the associated dialkyl ethers at elevated temperature in the gas phase, if a .gamma.-Al.sub.2 O.sub.3 is used that is prepared by dehydration of an aluminum oxide/hydroxide hydrate and has a BET surface area from 50 to 400 m.sup.2 /g and a surface acidity of 5 to 600 mmol H.sup.+ /kg.
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