PURIFICATION OF 1-(4-CHLOROBENZOYL)-5-METHOXY-2- METHYLINDOLE-3-ACETIC ACID

PURIFICATION OF 1-(4-CHLOROBENZOYL)-5-METHOXY-2- METHYLINDOLE-3-ACETIC ACID

PROBLEM TO BE SOLVED: To provide a purification process for 1-(4-chloro-benzoyl)-5-methoxy-2- methyl-3-acetaic acid with industrial advantage. SOLUTION: Crude 1-(4-chloro-benzoyl)-5-methoxy-2-methyl-3-acetic acid is recrystallized from a mixed solvent of an aliphatic ketone, for example, acetone or...

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Bibliographische Detailangaben
Hauptverfasser: IKIMI KIYOSHI, ARAI FUMIYASU, IZUMI TAKUHIRO
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a purification process for 1-(4-chloro-benzoyl)-5-methoxy-2- methyl-3-acetaic acid with industrial advantage. SOLUTION: Crude 1-(4-chloro-benzoyl)-5-methoxy-2-methyl-3-acetic acid is recrystallized from a mixed solvent of an aliphatic ketone, for example, acetone or methyl ethyl ketone and an aliphatic hydrocarbon solvent, for example, n-pentane or n-hexane.