发明授权
- 专利标题: Process for cyclizing upsilon-chlorocarboxylic acids
- 专利标题(中): 使上 - 次氯羧酸环化的方法
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申请号: US625188申请日: 1984-06-28
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公开(公告)号: US4520209A公开(公告)日: 1985-05-28
- 发明人: Werner Schwarze , Axel Kleemann , Hans Remmel , Wolfgang Hohn
- 申请人: Werner Schwarze , Axel Kleemann , Hans Remmel , Wolfgang Hohn
- 申请人地址: DEX Frankfurt am Main
- 专利权人: Degussa Aktiengesellschaft
- 当前专利权人: Degussa Aktiengesellschaft
- 当前专利权人地址: DEX Frankfurt am Main
- 优先权: DEX2941211 19791011
- 主分类号: C07C69/74
- IPC分类号: C07C69/74 ; B01J31/00 ; B01J31/02 ; C07B20060101 ; C07C20060101 ; C07C67/00 ; C07C67/30 ; C07C67/317
摘要:
.gamma.-chlorocarboxylic acid methyl or ethyl esters are cyclized to the corresponding cyclopropane carboxylic acid esters by employing the sodium or potassium alcoholate of methanol or ethanol in the presence of the same alcohol at a temperature above the boiling point of the alcohol employed.
公开/授权文献
- US5172321A Vehicle route planning system 公开/授权日:1992-12-15
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