发明授权
US4730083A Process for the preparation of 3,5-dialkyl-4-hydroxy benzoic acid
失效
3,5-二烷基-4-羟基苯甲酸的制备方法
- 专利标题: Process for the preparation of 3,5-dialkyl-4-hydroxy benzoic acid
- 专利标题(中): 3,5-二烷基-4-羟基苯甲酸的制备方法
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申请号: US898794申请日: 1986-08-18
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公开(公告)号: US4730083A公开(公告)日: 1988-03-08
- 发明人: Stephen D. Pastor , John D. Spivack , Paul Odorisio
- 申请人: Stephen D. Pastor , John D. Spivack , Paul Odorisio
- 申请人地址: NY Ardsley
- 专利权人: Ciba-Geigy Corporation
- 当前专利权人: Ciba-Geigy Corporation
- 当前专利权人地址: NY Ardsley
- 主分类号: C07C51/15
- IPC分类号: C07C51/15
摘要:
An improved process for the preparation of 3,5-dialkyl-4-hydroxybenzoic acid comprising the reaction of 2,6-dialkylphenol and carbon dioxide in the presence of a mono- or polyalkylene glycol ether.
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