Process for the purification of 5H-dibenzo-(b,f)-azepine

Production of high purity 5H-dibenzo-(b,f)-azepine (I) involves recrystallizing crude or impure (I) from (or slurrying the (I) in) a solvent mixture of (a) an aromatic hydrocarbon or a ketone and (b) an alcohol, ketone or aromatic hydrocarbon, the ratio of (a) to (b) being 50 : 50 to 98 : 2; (I) is...

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Bibliographic Details
Main Authors SCHITTER, REGINA, STEINWENDER, ERICH, HEU, FERDINAND, RAML, WALTER
Format Patent
LanguageEnglish
French
German
Published 06.08.2003
Edition7
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:Production of high purity 5H-dibenzo-(b,f)-azepine (I) involves recrystallizing crude or impure (I) from (or slurrying the (I) in) a solvent mixture of (a) an aromatic hydrocarbon or a ketone and (b) an alcohol, ketone or aromatic hydrocarbon, the ratio of (a) to (b) being 50 : 50 to 98 : 2; (I) is then isolated in a purity of at least 99.85 area % (by gas chromatography (GC)).
Bibliography:Application Number: EP20010106212