Undec-4-ene → HCID 67389573, compound

Participants

Reaction Steps

To a solution of 1-(4-bromo-furan-2-yl)-4,4-difluoro-hexane-1,3-dione (220 mg, 0.75 mmol), and 2-cyano-N-(2,4-difluoro-benzyl)-acetamide (300 mg, 1.4 mmol) in benzene (4 mL) was added 1,8-diaza-bicycle-[5.4.0]-undec-7-ene (60 μL, 0.4 mmol). The red reaction mixture was then heated to reflux. After 3 hours, heating was discontinued and the reaction was allowed to cool to ambient temperature. After stirring at ambient temperature for 16 hours the reaction mixture was diluted with CH2Cl2 and purified by adsorbing the material onto silica gel, loading the resulting solid onto the column and eluting with a gradient from 0% to 30% ethyl acetate/hexane to afford 6-(4-bromo-furan-2-yl)-1-(2,4-difluoro-benzyl)-4-(1,1-difluoro-propyl)-2-oxo-1,2-dihydro-pyridine-3-carbonitrile (188 mg, 54% yield) as a yellow oil. 1H-NMR (400 MHz, CDCl3): δ 7.62 (1H, s), 7.1-7.03 (1H, m), 6.86-6.78 (2H, m), 6.76 (1H, s), 6.64 (1H, s), 5.46 (2H, s), 2.31 (2H, t of q, JH-H=7.6 Hz, JH-F=16.9 Hz), 1.11 (3H, t, J=7.6 Hz).

Provenance & Evidence