Potassium Carbonate → HCID 66696592, compound

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Reaction Steps

A mixture of 4-bromo-3-fluorobenzaldehyde (1.02 g, 5.0 mmol), 1-(1-isocyanoethylsulfonyl)-4-methylbenzene (1.05 g, 5.0 mmol), and K2CO3 (0.83 g, 6.0 mmol) in methanol (20 mL) was heated to reflux. After 2.5 hr the mixture was cooled to ambient temperature and the volatiles evaporated. The residue was partitioned between Et2O and H2O. The separated aqueous phase was extracted with Et2O, and the combined organic extract was washed with brine, dried (Na2SO4), filtered, and concentrated in vacuo. Flash chromatography (Analogix® Intelliflash 280™; 10% to 20% EtOAc/hexanes eluant; SF25-80 g column) yielded 1.04 g (81%) of the title compound as a white solid. 1H NMR (300 MHz, DMSO-d6) δ 8.41 (s, 1H), 7.83 (dd, J=8.3, 7.5 1H), 7.57 (dd, J=10.1, 2.0 1H), 7.42 (dd, J=8.5, 2.0 1H), 2.38 (s, 3H). MS (DCI+) m/z 256/258 (M+H).

Provenance & Evidence