3,3,3-Trifluoropropylamine → HCID 86675154, compound

Participants

Reaction Steps

To a stirred solution of (E)-5-(3-(3,5-dichloro-4-fluorophenyl)-4,4,4-trifluorobut-1-enyl)-2,3-dihydro-1H-inden-1-one (0.15 g, 0.35 mmol) in DCE (10 mL), was added trifluoropropyl amine (0.048 g, 0.42 mmol) and sodium cyanoborohydride (0.055 g, 0.875 mmol) in cooling and the reaction mixture was stirred at ambient temperature for 16 h. The reaction mixture was diluted with DCE, was washed with water and brine and dried over anhydrous sodium sulfate. Concentration under reduced pressure gave the crude compound, which was purified by flash column chromatography (SiO2, 100-200 mesh; 10-15% EtOAc in petroleum ether) to afford the title compound as a colorless gummy material (0.042 g, 24%): 1H NMR (400 MHz, CDCl3) δ 7.38-7.20 (m, 5H), 6.62 (d, J=16.0 Hz, 1H), 6.34 (dd, J=16.0, 8.0 Hz, 1H), 5.83 (br, 1H), 5.52 (m, 1H), 4.12 (m, 1H), 3.02 (m, 3H), 2.82 (m, 1H), 2.50 (m, 2H), 1.82 (m, 1H), 1.42 (m, 1H); ESIMS m/z 497.98 ([M−H]−); IR (thin film) 3027, 1654, 815 cm−1.

Provenance & Evidence