发明授权
- 专利标题: Preparation of 2(5H)-furanones
- 专利标题(中): 2(5H) - 呋喃酮的制备
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申请号: US201050申请日: 1988-06-01
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公开(公告)号: US4853473A公开(公告)日: 1989-08-01
- 发明人: Rolf Fischer , Juergen Frank , Franz Merger , Michael Roeper , Uwe Vagt
- 申请人: Rolf Fischer , Juergen Frank , Franz Merger , Michael Roeper , 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: DEX3718527 19870603
- 主分类号: C07D315/00
- IPC分类号: C07D315/00
摘要:
2(5H)-furanones I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.5 - or C.sub.6 -cycloalkyl, C.sub.7 -C.sub.12 -aralkyl or aryl, are prepared by heating a 3-formylcarboxylate or 3-formylcarboxylic acid II ##STR2## where R.sup.3 is hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.5 - or C.sub.6 -cycloalkyl, C.sub.7 -C.sub.12 -aralkyl or aryl, to 100.degree.-450.degree. C. in the presence of an acidic catalyst.