发明公开
- 专利标题: A PROCESS FOR THE PREPARATION OF ESERETHOLE
- 专利标题(中): 用于生产ESERETHOLEN。
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申请号: EP93912826.0申请日: 1993-05-28
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公开(公告)号: EP0643694A1公开(公告)日: 1995-03-22
- 发明人: BELLI, Aldo , CHIODINI, Giorgio , MAIORANA, Stefano
- 申请人: LABORATORIO CHIMICO INTERNAZIONALE S.p.A.
- 申请人地址: Via Salvini, 10 I-20122 Milano IT
- 专利权人: LABORATORIO CHIMICO INTERNAZIONALE S.p.A.
- 当前专利权人: LABORATORIO CHIMICO INTERNAZIONALE S.p.A.
- 当前专利权人地址: Via Salvini, 10 I-20122 Milano IT
- 代理机构: Minoja, Fabrizio
- 优先权: IT1992MI00134 19920601
- 国际公布: WO1993024455 19931209
- 主分类号: B01J27
- IPC分类号: B01J27 ; C07B61 ; C07C231 ; C07C233 ; C07D209 ; C07D487
摘要:
A process for the preparation of 1,3-dimethyl-5-hydroxy-oxindole of formula (II) which comprises the reaction of 4-(N-methylamino)phenol with 2-halogen-propinol chloride and cyclization of the resulting compound in the presence of Lewis acids, and the conversion thereof to eserethole.
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