Triethylamine → HCID 10205027, compound

Participants

Reaction Steps

To a solution of 293 (200 mg, 0.372 mmol) in toluene (5 mL) and THF (1 mL) was added 1,1′-carbonyldiimidazole (72 mg, 0.45 mmol) followed by Et3N (156 μL, 1.12 mmol) and the mixture was stirred at room temperature for 5 h then at 90° C. for 48 h. The reaction mixture was diluted with AcOEt, a solution of sat. NH4Cl was added and the phases were separated. The organic layer was washed with brine, dried over anhydrous Na2SO4, filtered and concentrated. The crude residue was purified by flash chromatography on silica gel (DCM/AcOEt: 80/20) to afford the desired compound (120 mg, 0.21 mmol, 57% yield). 1H NMR (DMSO) δ (ppm): 9.37 (s, 1H), 7.98 (d, J=8.1 Hz, 2H), 7.76 (d, J=7.5 Hz, 1H), 7.41 (d, J=8.1 Hz, 2H), 7.25-15 (m, 3H), 6.88 (s, 1H), 6.61 (s, 2H), 5.40 (dd, J=8.7, 6.0 Hz, 1H), 4.79 (t, J=8.7 Hz, 1H), 4.19 (dd, J=8.7, 6.0 1H), 3.75 (s, 3H), 3.72 (s, 6H), 1.47 (s, 9H).

Provenance & Evidence