发明授权
- 专利标题: Carboxylic acid synthesis process
- 专利标题(中): 羧酸合成工艺
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申请号: US79426申请日: 1987-07-30
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公开(公告)号: US4937379A公开(公告)日: 1990-06-26
- 发明人: Claudio Giordano , Marco Villa
- 申请人: Claudio Giordano , Marco Villa
- 申请人地址: ITX Vicenza
- 专利权人: Zambon S.p.A.
- 当前专利权人: Zambon S.p.A.
- 当前专利权人地址: ITX Vicenza
- 优先权: ITX21359A/86 19860801
- 主分类号: C07B53/00
- IPC分类号: C07B53/00 ; B01J31/00 ; B01J31/02 ; C07B31/00 ; C07B61/00 ; C07C51/00 ; C07C51/09 ; C07C57/30 ; C07C57/32 ; C07C59/64 ; C07C67/00 ; C07C67/475 ; C07C69/612 ; C07C69/65 ; C07C69/734 ; C07D317/32
摘要:
A process is described for preparing alpha-arylalkanoic acids, which comprises preparing and subsequently rearranging ketals of formula ##STR1## (in which Ar, R, R.sub.1, R.sub.2 and R.sub.4 have the meanings given in the description).The ketals of formula II are prepared from the corresponding alpha-hydroxyketals.The rearrangement reaction is conducted under mild conditions.
公开/授权文献
- USD398873S Air propelled rotation reflector 公开/授权日:1998-09-29
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