发明授权
US5681977A Method for the production of (3-alkoxycarbonyl-2-butenyl)
triphenylphosphonium salts
失效
(3-烷氧基羰基-2-丁烯基)三苯基鏻盐的制备方法
- 专利标题: Method for the production of (3-alkoxycarbonyl-2-butenyl) triphenylphosphonium salts
- 专利标题(中): (3-烷氧基羰基-2-丁烯基)三苯基鏻盐的制备方法
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申请号: US779785申请日: 1997-01-07
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公开(公告)号: US5681977A公开(公告)日: 1997-10-28
- 发明人: Bruno Burdet , August Ruttimann , Jean-Marie Santer , Theodor Siegfried
- 申请人: Bruno Burdet , August Ruttimann , Jean-Marie Santer , Theodor Siegfried
- 申请人地址: NJ Paramus
- 专利权人: Roche Vitamins Inc.
- 当前专利权人: Roche Vitamins Inc.
- 当前专利权人地址: NJ Paramus
- 优先权: CHX868/94 19940323
- 主分类号: C07C69/65
- IPC分类号: C07C69/65 ; C07C255/10 ; C07F9/54 ; C07C303/06
摘要:
Novel processes and intermediates useful for the manufacture of the Wittig ester salts are disclosed. The Wittig ester salts are known as important C.sub.5 building blocks for the manufacture of various polyenecarboxylic acid esters in the field of carotenoid chemistry.
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