[EN] PROCESS FOR PREPARATION OF (DL) -NOREPINEPHRINE ACID ADDITION SALT, A KEY INTERMEDIATE OF (R) - (-) - NOREPINEPHRINE [FR] PROCÉDÉ DE PRÉPARATION D'UN SEL D'ADDITION D'ACIDE DE NORÉPINÉPHRINE (DL), INTERMÉDIAIRE CLÉ DE LA NORÉPINÉPHRINE (R) - (-) -
[EN] PROCESS FOR PREPARATION OF (DL) -NOREPINEPHRINE ACID ADDITION SALT, A KEY INTERMEDIATE OF (R) - (-) - NOREPINEPHRINE [FR] PROCÉDÉ DE PRÉPARATION D'UN SEL D'ADDITION D'ACIDE DE NORÉPINÉPHRINE (DL), INTERMÉDIAIRE CLÉ DE LA NORÉPINÉPHRINE (R) - (-) -
[EN] PROCESS FOR PREPARATION OF (DL) -NOREPINEPHRINE ACID ADDITION SALT, A KEY INTERMEDIATE OF (R) - (-) - NOREPINEPHRINE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN SEL D'ADDITION D'ACIDE DE NORÉPINÉPHRINE (DL), INTERMÉDIAIRE CLÉ DE LA NORÉPINÉPHRINE (R) - (-) -
申请人:NEON LAB LTD
公开号:WO2013008247A1
公开(公告)日:2013-01-17
The invention discloses a process for preparation of (dl)-norepinephrine salt by reacting 3,4-dihydroxy-a-haloacetophenone with hexamethylenetetramine to provide hexamine salt; followed by hydrolysis and hydrogenation. The invention also discloses a novel intermediate formed in the process and its synthesis.