发明授权
US5410067A Process for the preparation of 5,6-dihydroxyindole and intermediate
compounds
失效
5,6-二羟基吲哚和中间体化合物的制备方法
- 专利标题: Process for the preparation of 5,6-dihydroxyindole and intermediate compounds
- 专利标题(中): 5,6-二羟基吲哚和中间体化合物的制备方法
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申请号: US921097申请日: 1992-07-29
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公开(公告)号: US5410067A公开(公告)日: 1995-04-25
- 发明人: Alex Junino , Jean J. Vandenbossche , Gerard Lang
- 申请人: Alex Junino , Jean J. Vandenbossche , Gerard Lang
- 申请人地址: FRX Paris
- 专利权人: L'Oreal
- 当前专利权人: L'Oreal
- 当前专利权人地址: FRX Paris
- 主分类号: A61K8/49
- IPC分类号: A61K8/49 ; A61Q5/10 ; B01J23/44 ; B01J23/46 ; C07B61/00 ; C07C67/00 ; C07C253/00 ; C07C253/30 ; C07C255/35 ; C07C255/36 ; C07C255/37 ; C07C255/43 ; C07D209/08 ; D06P3/08 ; C07B41/02
摘要:
Process for the preparation of 5,6-dihydroxyindole, wherein the compound of formula: ##STR1## in which R' denotes a hydrogen atom or an optionally substituted benzyl radical, is subjected either to the action of hydrogen under pressure or to a hydrogen transfer operation, in a solvent medium and in the presence of a hydrogenation catalyst.
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