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公开(公告)号:US4401830A
公开(公告)日:1983-08-30
申请号:US222155
申请日:1981-01-02
申请人: Sumio Umumura , Fumio Iwata , Kikuo Ataka , Hiroshi Shiraishi
发明人: Sumio Umumura , Fumio Iwata , Kikuo Ataka , Hiroshi Shiraishi
IPC分类号: B01J23/00 , C07B61/00 , C07C51/00 , C07C51/347 , C07C51/367 , C07C59/64 , C07C67/00 , C07C65/01
CPC分类号: C07C59/64 , C07C51/347 , C07C51/367
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.
摘要翻译: 用作制备药物的中间体的3-烷氧基-4-羟基苯基乙酸通过使用在高浓度下作为2-烷氧基苯酚和乙醛酸之间的反应产物而出现的相应的3-烷氧基-4-羟基扁桃酸的钯催化剂通过氢气的还原来制备 转化率和产量。