METHOD OF OBTAINING DERIVATIVES OF PHENOXYPROPINIC ACID

摘要

Preparation of D(+)-2-[4-(6-chloro-2-quinoxalyloxy)phenoxy]propionic acid(I) comprising reacting an alkali metal salt of 4-(6-chloro-2-quinoxalyloxy)phenol (II) with an alkali metal salt of L-2-chloropropionic acid (III) in an aromatic hydrocarbon solvent in the presence of an aprotic polar solvent to obtain an alkali metal salt of (I), and treating it with an acid.