Selectfluor → HCID 89306362, 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 (0.5 g, 1.24 mmol) in acetonitrile (20 mL), was added Selectfluor® (0.52 g, 1.48 mmol) and the reaction was heated to reflux temperature for 16 h. The reaction mixture was cooled to room temperature, concentrated under reduced pressure and diluted with CH2Cl2. The solution was washed with water and brine, dried over anhydrous sodium sulfate and concentrated under reduced pressure to give the crude product which was purified by flash column chromatography (SiO2, 100-200 mesh; 15% EtOAc in petroleum ether) to afford the title compound as a pale yellow semi solid (0.1 g, 24%): 1H NMR (400 MHz, CDCl3) δ 7.80 (m, 1H), 7.48 (m, 2H), 7.32 (m, 2H), 6.65 (d, J=16.0 Hz, 1H), 6.54 (dd, J=16.0, 8.0 Hz, 1H), 5.38 (m, 1H), 4.18 (m, 1H), 3.62 (m, 1H), 3.32 (m, 1H); ESIMS m/z 419.06 ([M−H]−); IR (thin film) 1728, 1114, 817 cm−1.

Provenance & Evidence