发明公开
EP0355395A1 Process for the preparation of intermediates for the synthesis of diltiazem 失效
Verfahren zur Herstellung von Zwischenprodukten in der Synthese von Diltiazem。

  • 专利标题: Process for the preparation of intermediates for the synthesis of diltiazem
  • 专利标题(中): Verfahren zur Herstellung von Zwischenprodukten in der Synthese von Diltiazem。
  • 申请号: EP89113136.9
    申请日: 1989-07-18
  • 公开(公告)号: EP0355395A1
    公开(公告)日: 1990-02-28
  • 发明人: Cavicchioli, SilviaPaiocchi, MaurizioGiordano, Claudio
  • 申请人: ZAMBON GROUP S.p.A.
  • 申请人地址: Via della Chimica, 9 I-36100 Vicenza IT
  • 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: Via della Chimica, 9 I-36100 Vicenza IT
  • 优先权: IT2147988 19880726
  • 主分类号: C07D281/10
  • IPC分类号: C07D281/10
Process for the preparation of intermediates for the synthesis of diltiazem
摘要:
Compound of formula III, which is an intermediate in the synthesis of diltiazem, is prepared by N-alkylation of the corresponding N-H derivative with 2-dimethylaminoethanol in an inert solvant and in presence of methanesulphonyl chloride and a base.
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