发明授权
- 专利标题: Process for preparing trans-chrysanthemic acid
- 专利标题(中): 制备反式菊酸的方法
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申请号: US415348申请日: 1973-11-13
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公开(公告)号: US3943167A公开(公告)日: 1976-03-09
- 发明人: Gohu Suzukamo , Masami Fukao , Tsuneyuki Nagase , Horosuke Toshioka
- 申请人: Gohu Suzukamo , Masami Fukao , Tsuneyuki Nagase , Horosuke Toshioka
- 申请人地址: JA
- 专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人地址: JA
- 优先权: JA47-113634 19721113
- 主分类号: C07C61/37
- IPC分类号: C07C61/37 ; B01J23/00 ; B01J31/00 ; C07B61/00 ; C07C51/00 ; C07C51/487 ; C07C61/04 ; C07C67/00 ; C07C51/42
摘要:
A process for preparing trans-chrysanthemic acid which comprises reacting a mixture of alkyl trans-chrysanthemate and alkyl cis-chrysanthemate with an equimolar amount or less of an alkali with respect to the trans-isomer in the presence of water or an alcohol to hydrolyze the trans-isomer predominantly and separating the hydrolyzed trans-isomer from the unreacted cis-isomer.
公开/授权文献
- US5599019A Handle pallet for implements such as sports racquets 公开/授权日:1997-02-04
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