Hydrochloric Acid → HCID 22143615, compound

Participants

Reaction Steps

To a solution of 1-(1-ethyl-6-methoxy-2-methyl-1H-indol-3-yl)-2,2,2-trifluoro-ethanone 71b (580 mg, 2.03 mmole) in 10 ml ethanol was added a solution of KOH (1.1 g, 20 mmole) in 10 ml water. The mixture was heated to reflux for 1 hour and cooled to room temperature. Concentrated HCl was added to adjust pH to 1. The mixture was extracted with EtOAc and the combined organic layer was dried over Na2SO4, filtered and concentrated in vacuo. The residue was further purified by column chromatography (eluting with 1-2% MeOH in CH2Cl2) to give 350 mg product as brown solid (74% yield). 1H NMR (400 MHz, CDCl3) δ8.07 (1H, d, J=8.7 Hz), 6.90 (1H, dd, J=2.2, 8.7 Hz), 6.80 (1H, d, J=2.2 Hz), 4.14 (2H, q, J=7.2 Hz), 3.88 (3H, s), 2.77 (3H, s), 1.37 (3H, t, J=7.2 Hz).

Provenance & Evidence