Hydrochloric Acid → 3-(2-Aminoethyl)-1-methylindolin-2-one hydrochloride

Participants

Reaction Steps

To a solution of 2-(1-methyl-1H-indol-3-yl)ethanamine (2.5 g cude) in DMSO (1.33 g, 17.0 mmol) was added concentrated hydrochloric acid (1.2 mL) slowly. The resulting reaction mixture was stirred at room temperature in a sealed reactor for 16 h. The reaction mixture was concentrated and the residue was purified by preparative HPLC to afford the title compound (1.5 g, 6.59 mmol, 45% yield over two steps) as a yellow solid. MS (ESI) m/z 191.1 [M+H]+.

Provenance & Evidence