发明授权
US06573400B1 Preparation of 2-keto-L-gulonic esters 失效
2-酮-L-古洛糖酯的制备

  • 专利标题: Preparation of 2-keto-L-gulonic esters
  • 专利标题(中): 2-酮-L-古洛糖酯的制备
  • 申请号: US09636825
    申请日: 2000-08-14
  • 公开(公告)号: US06573400B1
    公开(公告)日: 2003-06-03
  • 发明人: Andreas BöttcherWolfram Burst
  • 申请人: Andreas BöttcherWolfram Burst
  • 优先权: DE19938980 19990819
  • 主分类号: C07C6966
  • IPC分类号: C07C6966
Preparation of 2-keto-L-gulonic esters
摘要:
C1-C10-alkyl 2-keto-L-gulonates are prepared by esterifying 2-keto-L-gulonic acid or diacetone-2-keto-L-gulonic acid with a C1-C10-alcohol in the presence of an acidic catalyst by a process in which the esterification is carried out in a liquid film on a hot surface with simultaneous removal of water.
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