PROCESS FOR THE PREPARATION OF RACEMIC 2-[[2-(4-HYDROXYPHENYL)ETHYL]THIO]-3-[4-(2-[4-[(METHYLSULFONYL)OXY]PHENOXY]ETHYL)PHENYL]-PROPANOIC ACID

摘要

The present invention provides a process for the preparation of substantially racemic 2-{[2-(4-hydroxyphenyl)ethyl]thio}-3-[4-(2-{4- [(methylsulfonyl)oxy]phenoxy}ethyl)phenyl]-propanoic acid which comprises reacting 2-{[2-(4-hydroxyphenyl)ethyl]thio}-3-[4-(2-{4-[(methylsulfonyl) oxy]phenoxy}ethyl)phenyl]propanoic acid enriched in one enantiomer with a base in an inert solvent.