Hydrochloric Acid → HCID 15337638, compound

Participants

Reaction Steps

A stirred solution of 3-[1-(t-butoxycarbonyl)-4-piperidyl]-5-cyanoindole (8.4 g, 25.8 mmol) in methanol (260 mL) was treated with 4N hydrochloric acid in dioxane (64 mL, 256 mmol). After stirring at ambient temperature for 2 hours, the solution was concentrated. The residue was neutralized with 1N NaOH, extracted with ethyl acetate, dried, and concentrated to afford the product as a white solid (5.29 g, 91%). 1H-NMR δ(CDCl3) 8.59 (br s, 1 H), 8.00 (s, 1 H), 7.40 (s, 2 H), 7.09 (s, 1 H), 3.23 (br d, 1 H), 2.93 (m, 1 H), 2.81 (br t, 2 H), 2.01 (m, 2 H), 1.66 (m, 4 H).

Provenance & Evidence