Process for the preparation of 3-ethoxy-4-(alkoxy carbonyl)-phenyl acetic acid. (an intermediate of repaglinide)
申请人:DR. REDDY'S LABORATORIES LIMITED
公开号:US20040249188A1
公开(公告)日:2004-12-09
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