Process for the preparation of 3-¬(4-fluorophenyl) sulfonyl|-2-hydroxy-2-methyl propionic acid
申请人:Helm AG
公开号:EP1669347A1
公开(公告)日:2006-06-14
The present invention relates to a process for the preparation of 3-[(4-fluorophenyl)sulfonyl]-2-hydroxy-2-methylpropionic acid, which comprises the step of reacting 3-chloro-2-methyl-2-hydroxypropionic acid with a salt of 4-fluorophenylsulfinic acid, and the use of (+/-)- and (-)-3-[(4-fluorophenyl)sulfonyl]-2-hydroxy-2-methylpropionic acid and (+)-3-chloro-2-methyl-2-hydroxypropionic acid in the preparation of bicalutamide.