发明授权
US5840964A Process for the preparation of the enantiomers of
2-(2-fluoro-4-biphenyl)propionic acid
失效
制备2-(2-氟-4-联苯基)丙酸对映异构体的方法
- 专利标题: Process for the preparation of the enantiomers of 2-(2-fluoro-4-biphenyl)propionic acid
- 专利标题(中): 制备2-(2-氟-4-联苯基)丙酸对映异构体的方法
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申请号: US577377申请日: 1995-12-22
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公开(公告)号: US5840964A公开(公告)日: 1998-11-24
- 发明人: Claudio Pozzoli , Graziano Castaldi
- 申请人: Claudio Pozzoli , Graziano Castaldi
- 申请人地址: ITX Vicenza
- 专利权人: Zambon Group S.P.A.
- 当前专利权人: Zambon Group S.P.A.
- 当前专利权人地址: ITX Vicenza
- 优先权: ITXMI94A2647 19941227
- 主分类号: C07B53/00
- IPC分类号: C07B53/00 ; C07B57/00 ; C07C51/06 ; C07C51/487 ; C07C51/60 ; C07C57/58 ; C07C57/76 ; C07C69/65 ; C07D263/06 ; C07D319/06 ; C07B55/00
摘要:
A process for the preparation of 2-(2-fluoro-4-biphenyl)propianic acid enantiomers comprising a II order resolution of ketals of formula ##STR1## wherein R.sub.1 ad R.sub.2 have the meanings reported in the description; the asterisk shows the chiral carbon atom and the asymmetric carbon atoms marked by .alpha. and .beta. have both R or S configuration is described.
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