[EN] PROCESS FOR THE PREPARATION OF 4-DIMETHYLAMINOCROTONIC ACID<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDE 4-DIMÉTHYLAMINOCROTONIQUE
申请人:SUN PHARMACEUTICAL IND LTD
公开号:WO2015186065A1
公开(公告)日:2015-12-10
The present invention provides a process for the preparation of 4- dimethylaminocrotonic acid of Formula (II) or its salts, which is used as an intermediate for the preparation of afatinib or its salts.
The present invention provides a method of preparing an alkylamine derivates which hardly generates impurities and enables mass production with high purity.