申请人:Schwarz Pharma Ltd.
公开号:EP1862449A1
公开(公告)日:2007-12-05
The present disclosure relates to a process for the preparation of 2-(3-diisopropylamino-1-phenylpropyl)-4-(hydroxymethyl)phenol or its phenolic monoesters or salts thereof, characterized by the steps of
a) reacting a compound of formula (II)
with a mixture of MeMgCl and Mg in a solvent,
b) optionally reducing the temperature of the Grignard reagent to a lower temperature than in step a), and
reacting the resulting Grignard reagent with an excess of a carbonate in a solvent, to obtain a compound of formula (III)
wherein A is a C1-C6 alkyl group, and then further reacting the compound of formula (III) in a known manner to obtain the desired end product.
本公开涉及一种制备2-(3-二异丙基氨基-1-苯基丙基)-4-(羟甲基)酚或其酚单酯或盐的过程,其特征在于以下步骤:a) 将化合物II的混合物与MeMgCl和Mg在溶剂中反应,b) 可选地将格氏试剂的温度降低到低于步骤a中的温度,并将所得的格氏试剂与碳酸盐的过量在溶剂中反应,以获得化合物III的化合物,其中A是C1-C6烷基基团,然后以已知方法进一步将化合物III反应以获得所需的终产物。