5-Bromoindole → HCID 60202491, compound

Participants

Reaction Conditions

Reaction Steps

To a sealed tube under argon atmosphere was added (2-(furan-2-yl)-4-(pyridin-3-ylcarbamoyl)quinolin-6-yl)boronic acid (0.120 g) in DMF (4 ml) and the vessel was purged with argon under stirring for 5 minutes. After 5 minutes, a 2N aqueous solution of potassium carbonate was added (1.8 ml, 11 eq) and the tube was purged with argon under stirring for 5 minutes. 5-bromoindole (0.057 g, 0.9 eq) was then added and the vessel was purged with argon under stirring for 15 minutes. Finally tetrakistriphenylphosphine palladium(0) (0.011 g, 0.03 eq.) was added under argon and the tube was sealed. The reaction mixture was heated to 90° C. for 5 hours. The completion of the reaction was monitored by TLC using ethyl acetate:hexanes (5:5) as a mobile phase. After completion of the reaction, the reaction mixture was diluted with ethyl acetate (10 ml) and then washed with water (5*10 ml). The ethyl acetate layer was dried over anhydrous sodium sulfate and the solvent was removed by distillation and the crude product was subjected to purification by high performance liquid chromatography to provide 2-(furan-2-yl)-6-(1H-indol-5-yl)-N-(pyridin-3-yl)quinoline-4-carboxamide (0.008 g). 1H NMR (400 MHz, DMSO-d6) δ ppm 11.34 (s, 1H), 11.19 (s, 1H), 9.00 (m, 1H), 8.41 (m, 1H), 8.35 (m, 1H), 8.30 (m, 1H), 8.20 (m, 1H), 8.12 (m, 2H), 7.85 (m, 1H), 7.70 (m, 1H), 7.4 (m, 1H), 7.58 (m, 1H), 7.50 (m, 2H), 7.43 (m, 1H), 7.12 (m, 1H), 6.54 (m, 1H); m/z 431.2 (MH+).

Provenance & Evidence