发明授权
- 专利标题： Preparation of esters of tetrahydropyran-4-carboxylic acid
- 专利标题（中）： 四氢吡喃-4-羧酸酯的制备
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申请号： US170768申请日： 1988-03-21
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公开(公告)号： US4837346A公开(公告)日： 1989-06-06
- 发明人: Rainer Becker , Heinz Eckhardt , Rolf Fischer , Wolfgang Spiegler , Uwe Vagt
- 申请人： Rainer Becker , Heinz Eckhardt , Rolf Fischer , Wolfgang Spiegler , Uwe Vagt
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX3710805 19870331
- 主分类号： C07D309/08
- IPC分类号： C07D309/08
摘要：
A process for the preparation of esters of tetrahydropyran-4-carboxylic acid of the general formula I, where R.sup.1 is an alkyl, cycloalkyl, or aryl group, by treating butyrolactones of the general formula II, where R.sup.2 is a hydrogen atom, an alkyl group, or an acyl group --CO--R.sup.3, R.sup.3 being a hydrogen atom or an alkyl group with from 1 to 6 carbon atoms, with alcohols of the general formula III at temperatures of from 150.degree. C. to 400.degree. C. in the presence of acid catalysts. ##STR1##
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