Cesium carbonate → HCID 71080417, compound

Participants

Reaction Conditions

Reaction Steps

5-Bromo-2-(trifluoromethyl)pyridine (2.075 g, 9.18 mmol) was added to a solution of 5-bromo-1H-indole (1.5 g, 7.65 mmol) and in DMF (20 mL) followed by cesium carbonate (7.48 g, 22.95 mmol), and the mixture was stirred at 90° C. for 15 min. Insoluble solids were filtered, filtrate was concentrated and partitioned between ethyl acetate and water. Organic layer was separated, washed with brine, dried over sodium sulphate and filtered. The filtrate was concentrated in vacuo and purified by flash chromatography using 5% ethyl acetate in pet ether to afford title compound (1.1 g, 42.1%) as an off-white solid. 1H NMR (300 MHz, DMSO-d6): δ 9.09 (d, J=2.4 Hz, 1H), 8.37 (dd, J1=2.4 Hz, J2=8.4 Hz, 1H), 8.11 (d, J=8.4 Hz, 1H), 7.91 (m, 2H), 7.68 (d, J=9.0 Hz, 1H), 7.37 (dd, J1=1.8 Hz, J2=8.4 Hz, 1H), 6.82 (d, J=3.0 Hz, 1H).

Provenance & Evidence