发明授权
- 专利标题： Preparation of 3-formyl-5,6-dihydro-2H-pyran
- 专利标题（中）： 3-甲酰基-5,6-二氢-2H-吡喃的制备
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申请号： US584334申请日： 1984-02-28
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公开(公告)号： US4532337A公开(公告)日： 1985-07-30
- 发明人: Heinz Eckhardt , Klaus Halbritter , Norbert Goetz , Gerd Heilen
- 申请人： Heinz Eckhardt , Klaus Halbritter , Norbert Goetz , Gerd Heilen
- 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
- 主分类号： C07D309/26
- IPC分类号： C07D309/26 ; C07D309/00
摘要：
3-Formyl-5,6-dihydro-2H-pyran is prepared by conversion of acrolein in the presence of water, acids and halohydrocarbons of 1 to 6 carbon atoms and 1 to 6 halogen atoms as solvents at from 60.degree. to 150.degree. C. The 3-formyl-5,6-dihydro-2H-pyran obtained by the novel process is a valuable starting material for the preparation of dyes and crop protection agents.
公开/授权文献
- US5764416A Fault tolerant antireflective coatings 公开/授权日：1998-06-09
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