Ethyl 6-benzyloxy-4-chloro-1-methyl-2-indolecarboxylate → Ethyl 4-chloro-6-hydroxy-1-methyl-2-indolecarboxylate

HRID 564996Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 564996
C([O:8][C:9]1[CH:17]=[C:16]2[C:12]([CH:13]=[C:14]([C:19]([O:21][CH2:22][CH3:23])=[O:20])[N:15]2[CH3:18])=[C:11]([Cl:24])[CH:10]=1)C1C=CC=CC=1>O1CCCC1.[Pd]>[Cl:24][C:11]1[CH:10]=[C:9]([OH:8])[CH:17]=[C:16]2[C:12]=1[CH:13]=[C:14]([C:19]([O:21][CH2:22][CH3:23])=[O:20])[N:15]2[CH3:18]

Komponenten

4

Edukt 1

HCID 21194606Ethyl 6-benzyloxy-4-chloro-1-methyl-2-indolecarboxylate

Produkt 1

HCID 21194263Ethyl 4-chloro-6-hydroxy-1-methyl-2-indolecarboxylateAusbeute 92,4 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 23938PalladiumKatalysatorHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

In 60 ml of tetrahydrofuran was dissolved 2.20 g (6.40 mmol) of ethyl 6-benzyloxy-4-chloro-1-methyl-2-indolecarboxylate. After 0.3 g of 10% palladium/carbon was added to the solution, catalytic hydrogenation was performed at ambient temperature under normal pressure. After completion of the reaction, the catalyst was filtered off and the filtrate was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography to give 1.50 g (92.4%) of ethyl 4-chloro-6-hydroxy-1-methyl-2-indolecarboxylate.

Aufarbeitung

  1. customwas performed at ambient temperature under normal pressure
  2. customAfter completion of the reaction
  3. filtrationthe catalyst was filtered off
  4. concentrationthe filtrate was concentrated under reduced pressure
  5. customThe resulting residue was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-bd6ae859ddc8451b9a0d57ba510ce675
Quelldatensatz
uspto-grants-2001_01
Patentnummer
US06169107A

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