发明授权
US5120847A Process for iodinating or brominating the .alpha.-methylenic carbon of a
secondary amide
失效
二次酰胺(ALPHA) - 甲基二氧化碳的改性或改性方法
- 专利标题: Process for iodinating or brominating the .alpha.-methylenic carbon of a secondary amide
- 专利标题(中): 二次酰胺(ALPHA) - 甲基二氧化碳的改性或改性方法
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申请号: US572920申请日: 1990-08-27
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公开(公告)号: US5120847A公开(公告)日: 1992-06-09
- 发明人: Anthony O. King , Sandor Karady , Kevin Anderson , Newton L. Abramson , Richard F. Shuman
- 申请人: Anthony O. King , Sandor Karady , Kevin Anderson , Newton L. Abramson , Richard F. Shuman
- 申请人地址: NJ Rahway
- 专利权人: Merck & Co., Inc.
- 当前专利权人: Merck & Co., Inc.
- 当前专利权人地址: NJ Rahway
- 主分类号: A61K31/395
- IPC分类号: A61K31/395 ; C07C231/12 ; C07C233/04 ; C07D223/10 ; C07D223/16 ; C07D233/04 ; C07D233/10 ; C07D233/16 ; C07J51/00 ; C07J73/00 ; C07J75/00
摘要:
A novel, facile, and specific process for .alpha.-iodinating or .alpha.-brominating the .alpha.-methylenic carbon of a straight chain, branched chain, or cyclic secondary amide, such as a lactam or an azasteroid, comprises reacting the amide with trialkylsilyl-X (R.sub.3 Si--X), where X is Br, I, or Cl, and R is methyl, ethyl, or n-propyl, in the presence of I.sub.2 or Br.sub.2. The .alpha.-iodo- or .alpha.-bromo-amide is useful for making the .alpha.,.beta.-unsaturated amide through dehydrohalogenation.
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