[EN] PROCESS FOR THE PREPARATION OF TAPENTADOL VIA NOVEL INTERMEDIATE<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION DE TAPENTADOL PAR LE BIAIS D'UN NOUVEL INTERMÉDIAIRE
申请人:IND SWIFT LAB LTD
公开号:WO2014141296A2
公开(公告)日:2014-09-18
The present invention relates to a commercially viable and improved process for preparation of tapentadol of formula I and its pharmaceutically acceptable salts, Formula I via novel intermediates tertiary hydroxy protected sulfonyl compound of formula III. Formula III wherein R1 is selected from hydrogen, straight chain or branched alky I, aryl, aralkyl, alkaryl which can be substituted or unsubstituted; and R2 represents CH3-CO-, CF3-CO-, CH2CICO-, CHCI2-CO-, CCI3-CO-, CH3O-CO-CO-, CH3O-CO-, CH3CH2O-CO-, CH3CH2O-CO-CO, phenyl-CO-, or meta-CH3COO-phenyl- CO- or -S02R'; wherein R' can be selected from hydrogen, straight chain or branched alkyl, aryl, aralkyl, alkaryl, heteroalkyl, heteroaryl and like which can be substituted or unsubstituted.