Carbazole → HCID 1897299, compound

Participants

Reaction Steps

To a stirred solution of carbazole (5.0 g, 29.9 mmol) in anhydrous N,N-dimethylformamide (20 mL) was added 85% aqueous potassium hydroxide (2.171 g, 32.9 mmol) and the mixture was stirred at room temperature for 1 hour. The mixture was cooled in an ice bath and (S)-(+)-epichlorohydrin (4.68 mL, 59.8 mmol) was added. The mixture was stirred overnight at room temperature, and then partitioned between water and ethyl acetate. The organic layer was washed with saturated aqueous sodium chloride, dried (anhydrous sodium sulfate), filtered, and concentrated. The residue was purified by silica gel column chromatography (30% methylene chloride/hexanes) to afford the desired product as a white solid (3.9 g, 58%). [α]D-10.4 (c 1.92, CHCl3). 1H NMR (300 MHz, CDCl3) δ 8.10 (d, 2H, J=7.5 Hz), 7.60-7.40 (m, 4H), 7.35-7.20 (m, 2H), 4.64 (dd, 1H, J=15.9, 3.3 Hz), 4.41 (dd, 1H, J=15.9, 4.8 Hz), 3.37 (m, 1H), 2.82 (t, 1H, J=4.2 Hz), 2.59 (dd, 1H, J=4.5, 2.4 Hz).

Provenance & Evidence