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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 566642Generated: October 26, 2026

4-methoxy-2-methyl-1-(phenylmethyl)-1H-indole → 1-Benzyl-2-methyl-1H-indol-4-ol

https://huagongshe.com/reaction/566642

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-methoxy-2-methyl-1-(phenylmethyl)-1H-indoleHCID 10777147—
ReactantBoron tribromide dichloromethaneHCID 22277759—
SolventDichloromethaneHCID 6344—
Product1-Benzyl-2-methyl-1H-indol-4-olHCID 1075236049%

Reaction Steps

A solution of 1.25 g (5 mol) of 4-methoxy-2-methyl-1-(phenylmethyl)-1H-indole and 20 mL of 1M BBr3/CH2Cl2 in 50 mL of methylene chloride was stirred at room temperature for 5 hours and concentrated at reduced pressure. The residue was dissolved in ethyl acetate, washed with brine and dried (MgSO4). After concentrating at reduced pressure, the residue was chromatographed on silica gel eluting with 20% EtOAc/hexane to give 577 mg (49% yield) of 4-hydroxy-2-methyl-1-(phenylmethyl)-1H-indole, 125-127° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06175021B1
Source datasetuspto-grants-2001_01
ORD IDord-f1cc513190b845828d3a394bbe15122d
Source noteuspto-grants-2001_01