发明授权
- 专利标题: Process for preparation of 3-alkoxy-4-hydroxyphenylacetic acid
- 专利标题(中): 3-烷氧基-4-羟基苯基乙酸的制备方法
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申请号: US222155申请日: 1981-01-02
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公开(公告)号: US4401830A公开(公告)日: 1983-08-30
- 发明人: Sumio Umumura , Fumio Iwata , Kikuo Ataka , Hiroshi Shiraishi
- 申请人: Sumio Umumura , Fumio Iwata , Kikuo Ataka , Hiroshi Shiraishi
- 申请人地址: JPX Ube
- 专利权人: UBE Industries, Ltd.
- 当前专利权人: UBE Industries, Ltd.
- 当前专利权人地址: JPX Ube
- 优先权: JPX55-1358 19800111
- 主分类号: B01J23/00
- IPC分类号: B01J23/00 ; C07B61/00 ; C07C51/00 ; C07C51/347 ; C07C51/367 ; C07C59/64 ; C07C67/00 ; C07C65/01
摘要:
3-Alkoxy-4-hydroxyphenylacetic acid useful as intermediate for preparation of pharmaceuticals is prepared by catalytic reduction with hydrogen using a palladium catalyst of corresponding 3-alkoxy-4-hydroxymandelic acid occurring as the reaction product between 2-alkoxyphenol and glyoxylic acid at high conversion and yield.
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