发明授权
US4401830A Process for preparation of 3-alkoxy-4-hydroxyphenylacetic acid 失效
3-烷氧基-4-羟基苯基乙酸的制备方法

Process for preparation of 3-alkoxy-4-hydroxyphenylacetic acid
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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