The present invention relates to an improved and convenient process for the preparation of 3-Ethoxy-4-(alkoxy carbonyl)-phenyl acetic acid, which can be represented by formula (Ia) where R
1
represents ethyl or methyl. Specifically the present invention relates to an improved process for the preparation of compound of formula
1
(Ia), which is the key intermediate for Repaglinide of formula (I), by the process, which involves non-hazardous raw materials with an easy handling, and cost effective process
本发明涉及一种改进和便利的制备3-乙氧基-4-(烷氧羰基)-
苯乙酸的方法,该化合物可用公式(Ia)表示,其中R1代表乙基或甲基。具体地,本发明涉及一种改进的制备公式1(Ia)化合物的方法,该化合物是公式(I)
瑞格列奈的关键中间体,通过使用易于处理的无危险原料和成本效益高的方法进行。