Invention Grant
US06225512B1 Method for producing and purifying 3-(3-hydroxyphenyl)-1,1,3-trimethylindan-5-ol
失效
3-（3-羟基苯基）-1,1,3-三甲基茚满-5-醇的生产和纯化方法
- Patent Title: Method for producing and purifying 3-(3-hydroxyphenyl)-1,1,3-trimethylindan-5-ol
- Patent Title (中): 3-（3-羟基苯基）-1,1,3-三甲基茚满-5-醇的生产和纯化方法
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Application No.: US09446477Application Date: 2000-02-14
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Publication No.: US06225512B1Publication Date: 2001-05-01
- Inventor: Stefan Westernacher , Franz Kosik , Wolfgang Calaminus , Wilfried Haese
- Applicant: Stefan Westernacher , Franz Kosik , Wolfgang Calaminus , Wilfried Haese
- Priority: DE19728377 19970703
- Main IPC: C07C3912
- IPC: C07C3912
Abstract:
A process is disclosed for the preparation and purification of 3-(4-hydroxyphenyl)-1,1,3-trimethylindan-5-ol. Accordingly, isopropenylphenol, its dimers or oligomers undergo isomerization in the presence of an acid catalyst, the reaction mixture is optionally neutralized by adding a base and 3-(4-hydroxyphenyl)-1,1,3-trimethylindan-5-ol is isolated by recrystallization.
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