Aluminium lithium hydride → 6-chloro-5-fluoro-1H-indol-3-yl-1-methyl-ethylamine

Participants

Reaction Conditions

Reaction Steps

A solution of 6-chloro-5-fluoro-3-(2-nitro-propenyl)-1H-indole (5.0 g, 19.63 mmol) in tetrahydrofuran (10 mL) was added to the suspension of lithium aluminium hydride (2.92 g, 78.54 mmol) in tetrahydrofuran (20 mL) at 0° C. and then refluxed for 3 hours. The reaction mixture was cooled to 0° C., and quenched according to the Fischer method. The reaction mixture was filtered through celite and the filtrate concentrated to give 2-(6-chloro-5-fluoro-1H-indol-3-yl-1-methyl-ethylamine (4.7 g crude) as a viscous brown liquid. The residue was used without further purification. 1H NMR (500 MHz, CDCl3): δ 8.13 (s, 1H), 7.37 (d, 1H, 6 Hz), 7.32 (d, 1H, J=10 Hz), 7.08 (s, 1H), 3.23-3.26 (m, 1H), 2.77-2.81 (m, 1H), 2.58-2.63 (m, 1H), 1.15 (d, 3H, J=6.5 Hz).

Provenance & Evidence