Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 3338Generated: October 26, 2026

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

https://huagongshe.com/reaction/3338

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 mmol) 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 numberUS05733923
Source datasetuspto-grants-1998_03
ORD IDord-b929091e25a74504966cd0bf54a67e49
Source noteuspto-grants-1998_03