Methods for the preparation of benzophenones derivatives
申请人:F. HOFFMANN-LA ROCHE AG
公开号:EP0855379A1
公开(公告)日:1998-07-29
The present invention relates to a process for the manufacture of benzophenone derivatives and is based on the separation of compounds of formula (I),
from corresponding isomeric compounds of formula (II),
by selective crystallization of corresponding salts of compounds of formula (I).