Toluene → HCID 18962557, compound

Participants

Reaction Conditions

Reaction Steps

The 4-benzyloxy-5-ethoxyindole (1.8 g, 0.0067 mole) obtained in Example (lc), 50% caustic soda (8 ml ), toluene (5.4 ml ) and tetrabutylammonium hydrogen sulphate (180 mg) are successively introduced. The mixture is heated to 60° C. and dimethyl sulphate (1 g) is introduced. The mixture is left at 60° C. for 30 minutes, diluted with water and the two phases are separated. The organic phase is washed with water, dried and the solvent evaporated. A colourless oil of 4-benzyloxy-5-ethoxy-l-methylindole (1.6 g; yield = 95%) is obtained.

Provenance & Evidence