[EN] NOVEL FORM OF A BENZENESULFONAMIDE DERIVATIVE<br/>[FR] NOUVELLE FORME DE DERIVE DE BENZENESULFONAMIDE
申请人:PLIVA ISTRAZIVANJE I RAZVOJ D
公开号:WO2006008562A1
公开(公告)日:2006-01-26
The present disclosure relates to an improved process for the preparation of enantiomerically enriched alcohols of Formula (I), from the corresponding ketone of Formula (II), by asymmetric transfer hydrogenation, using a hydrogen donor, catalyzed by a ruthenium or rhodium complex of an optically active N-sulfamoyl-1,2-diamine. R is as defined herein.
Process for the preparation of optically active ethenylphenyl-alcohols
申请人:Lonza AG
公开号:EP1988079A1
公开(公告)日:2008-11-05
Optically active ethenylphenyl-alcohols of formula
or its mirror image,
wherein R1 is unsubstituted or substituted heteroaryl and R2 is phenyl or substituted aryl, are prepared by asymmetric hydrogenation of the corresponding ketones applying hydrogen gas in the presence of specific platinum metal complex catalysts.