Diethyl Ether → HCID 22118897, compound

Participants

Reaction Steps

A stirred mixture of 1-acetyl-6-amino-2,3-dihydro-1H-indole (D10, 37.8 g, 0.22 mole), mechlorethamine hydrochloride (46 g, 0.24 mole) and anhydrous potassium carbonate (80 g, 0.58 mole) in 1-butanol (1800 ml) was heated at reflux for 8 h, then additional mechlorethamine hydrochloride (25 g, 0.13 mole) and potassium carbonate (41 g, 0.30 mole) were added and reflux continued for 3 h. The reaction mixture was allowed to cool and then washed with water (1000 ml). The aqueous wash was extracted with ethyl acetate, and the extract combined with the 1-butanol solution and concentrated in vacuo. The brown oily residue (60 g) was chromatographed on silica gel eluting with 0-8% MeOH/DCM to give an orange oil, which was trituated with ether to afford the title compound as a beige solid (12.2 g, 22%).

Provenance & Evidence