Reaktion #3439

Reaktionsgleichung

1-([1,1'-biphenyl]-2-ylmethyl)-4-methoxy-2-methyl-1H-indole

Cl2

→

1-([1,1'-biPhenyl]-2-ylmethyl)-4-hydroxy-2-methyl-1H-indole

Ausbeute 55.0%

Lösungsmittel

BBr3

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe crude product was chromatographed on silica gel
2. 2
   Wascheneluted with 20% EtOAc/hexane

Vorschrift

By the method used in Example 1, Part D, 1.6 g (4.9 mmol) of 1-([1,1'-biphenyl]-2-ylmethyl)-4-methoxy-2-methyl-1H-indole was O-demethylated by treating it with 20 mL of 1M BBr3 /CH2 Cl2. The crude product was chromatographed on silica gel and eluted with 20% EtOAc/hexane to give 841 mg (55% yield) of 1-([1,1'-biPhenyl]-2-ylmethyl)-4-hydroxy-2-methyl-1H-indole.

Quelle