PROCESS FOR PREPARATION OF (DL) -NOREPINEPHRINE ACID ADDITION SALT, A KEY INTERMEDIATE OF (R) - (-) - NOREPINEPHRINE
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.
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Page/Page column 9; 10
(2013/03/26)
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