发明授权
- 专利标题： Preparation of 4-hydroxymethyltetrahydropyrans
- 专利标题（中）： 4-羟甲基四氢吡喃的制备
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申请号： US990268申请日： 1992-12-14
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公开(公告)号： US5252755A公开(公告)日： 1993-10-12
- 发明人: Jochem Henkelmann , Thomas Ruehl , Horst Zimmermann , Norbert Goetz , Wolfgang Spiegler , Thomas Kuekenhoehner
- 申请人： Jochem Henkelmann , Thomas Ruehl , Horst Zimmermann , Norbert Goetz , Wolfgang Spiegler , Thomas Kuekenhoehner
- 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： DEX4141222 19911213
- 主分类号： B01J23/62
- IPC分类号： B01J23/62 ; B01J23/656 ; B01J23/72 ; B01J23/86 ; B01J23/88 ; C07B61/00 ; C07D309/06
摘要：
A process for the preparation of 4-hydroxymethyltetrahydropyrans of the formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are hydrogen, C.sub.1 - to C.sub.12 -alkyl, C.sub.3 - to C.sub.8 -cycloalkyl, aryl or C.sub.7 - to C.sub.20 -aralkyl, comprises reacting a tetrahydropyrancarboxylic ester of the formula II ##STR2## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined above, and R.sup.5 is hydrogen or C.sub.1 - to C.sub.12 -alkyl, at from 50.degree. to 400.degree. C. and at from 1 to 400 bar in the presence of hydrogen and a hydrogenation catalyst.
公开/授权文献
- US5895349A Female incontinence device 公开/授权日：1999-04-20
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